General
- Target chomik.exe
- Size 163KB
- Sample260604-xtvfwsds8q
- SHA256 b64d7d71d7d5c3a36e02e6814a87d8a7294c31bb1a7d07ded9d9b5d1e45676ef
- MD5 b4e4df37ca6c83bc8a0399a3958852fc
- SHA1 c9ca6ab3d5166645a2e137d3bb9eaa010bc5eddc
- SHA512 9146af40b358c4adf7dce461dea7befef77cf8009259ade38a0be18fb2c3bb72f1257669b6446c0708f5d361a0396fe9e68f956df96226ae5999669348d9f57d
- SSDEEP 3072:l7LW6Pr46prwG2k5GlI1JWE9QVsxyvJyn4NTfQf1VZlKWhrB3u+7:lXWJ5kICW3Jyn4if1VZsiB3u
- TLSH T161F33A0672A801ECE17BE73889521905F7777C264736E3CF1350A57A0FBAAD0AE7A711
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
chomik.exe
Resource
win10v2004-20260513-uk
Behavioral task
behavioral2
Sample
chomik.exe
Resource
win11-20260513-uk
Malware Config
Targets
-
- Target chomik.exe
- Size 163KB
- SHA256 b64d7d71d7d5c3a36e02e6814a87d8a7294c31bb1a7d07ded9d9b5d1e45676ef
- MD5 b4e4df37ca6c83bc8a0399a3958852fc
- SHA1 c9ca6ab3d5166645a2e137d3bb9eaa010bc5eddc
- SHA512 9146af40b358c4adf7dce461dea7befef77cf8009259ade38a0be18fb2c3bb72f1257669b6446c0708f5d361a0396fe9e68f956df96226ae5999669348d9f57d
- SSDEEP 3072:l7LW6Pr46prwG2k5GlI1JWE9QVsxyvJyn4NTfQf1VZlKWhrB3u+7:lXWJ5kICW3Jyn4if1VZsiB3u
- TLSH T161F33A0672A801ECE17BE73889521905F7777C264736E3CF1350A57A0FBAAD0AE7A711
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Disables RegEdit via registry modification
-
Disables Task Manager via registry modification
-
Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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Executes dropped EXE
-
Loads dropped DLL
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Adds Run key to start application
-
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
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Drops desktop.ini file(s)
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Drops file in System32 directory
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Component Object Model Hijacking
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
Modify Registry
1Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1SIP and Trust Provider Hijacking
1Discovery
Browser Information Discovery
1Network Service Discovery
1Peripheral Device Discovery
2Query Registry
7System Information Discovery
6System Location Discovery
1System Language Discovery
1System Network Configuration Discovery
1Internet Connection Discovery
1System Time Discovery
1