YARA · Volexity threat-intel
VOLEXITY_Malware_Golang_Discordc2_Bmdyy_1
Detects a opensource malware available on github using strings in the binary. The DISGOMOJI malware family used by TransparentJasmine is based on this malware.
- Author
- threatintel@volexity.com
- Date
- 2024-03-28
- Modified
- 2024-07-05
- Score / Quality
- 75 / 80
What this rule detects
Detects a opensource malware available on github using strings in the binary. The DISGOMOJI malware family used by TransparentJasmine is based on this malware.
It defines 5 patterns (5 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
rule VOLEXITY_Malware_Golang_Discordc2_Bmdyy_1 : FILE MEMORY
{
meta:
= "Detects a opensource malware available on github using strings in the binary. The DISGOMOJI malware family used by TransparentJasmine is based on this malware."
= "threatintel@volexity.com"
= "6816d264-4311-5e90-948b-2e27cdf0b720"
= "2024-03-28"
= "2024-07-05"
= "TIB-20240229"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2024/2024-06-13 DISGOMOJI/indicators/rules.yar#L216-L243"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
= "de32e96d1f151cc787841c12fad88d0a2276a93d202fc19f93631462512fffaf"
= "22b3e5109d0738552fbc310344b2651ab3297e324bc883d5332c1e8a7a1df29b"
= 75
= 80
= "FILE, MEMORY"
= "all"
= "all"
= "file,memory"
= "high"
= "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
= 10390
= 3
strings:
$s1 = "File is bigger than 8MB" wide ascii
$s2 = "Uploaded file to" wide ascii
$s3 = "sess-%d" wide ascii
$s4 = "Session *%s* opened" wide ascii
$s5 = "%s%d_%dx%d.png" wide ascii
condition:
4 of them
}
Strings (5 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $s1 | text | "File is bigger than 8MB" | wide ascii |
| $s2 | text | "Uploaded file to" | wide ascii |
| $s3 | text | "sess-%d" | wide ascii |
| $s4 | text | "Session *%s* opened" | wide ascii |
| $s5 | text | "%s%d_%dx%d.png" | wide ascii |
Condition
4 of themIn plain words (Heuristic)
- At least 4 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
Sample hashes
Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).
- de32e96d1f151cc787841c12fad88d0a2276a93d202fc19f93631462512fffaf
Licence & attribution
Author: threatintel@volexity.com
Source repository: Volexity threat-intel @ 3a9d0b5245
Licence: BSD 2-Clause License (stated in the rule's own meta)
“See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt”
Copyright notice: Copyright 2022 by Volexity, Inc.
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 6816d264-4311-5e90-948b-2e27cdf0b720
Metadata
| os | all |
|---|---|
| os_arch | all |
| scan_context | file,memory |
| severity | high |
| rule_id | 10390 |
| version | 3 |
Related rules
- MalwareVolexity threat-intel· threatintel@volexity.com· 2021-11-17
- MalwareVolexity threat-intel· threatintel@volexity.com· 2021-05-25
- MalwareVolexity threat-intel· threatintel@volexity.com· 2024-02-22
- MalwareVolexity threat-intel· threatintel@volexity.com· 2022-04-07
- MalwareVolexity threat-intel· threatintel@volexity.com· 2022-03-30
- MalwareVolexity threat-intel· threatintel@volexity.com· 2021-11-17
- MalwareVolexity threat-intel· threatintel@volexity.com· 2021-11-17
- MalwareVolexity threat-intel· threatintel@volexity.com· 2021-11-17