Analysis
- max time kernel
149s - max time network
127s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
30/08/2022, 09:13
General
- Target 566584a10ff7bd4442abc0e13b0f4dc263bbe61a0fbf0.exe
- Size 794KB
- Sample220830-k645msegdn
- SHA256 566584a10ff7bd4442abc0e13b0f4dc263bbe61a0fbf0a27c61bd92f511efe76
Malware Config
Extracted
-
colibri
-
1.2.0
-
Build1
-
http://zpltcmgodhvvedxtfcygvbgjkvgvcguygytfigj.cc/gate.php
-
http://yugyuvyugguitgyuigtfyutdtoghghbbgyv.cx/gate.php
Signatures
- Colibri Loader
A loader sold as MaaS first seen in August 2021.
- Executes dropped EXE 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\566584a10ff7bd4442abc0e13b0f4dc263bbe61a0fbf0.exe"C:\Users\Admin\AppData\Local\Temp\566584a10ff7bd4442abc0e13b0f4dc263bbe61a0fbf0.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\tmpFDED.tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmpFDED.tmp.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\tmpFDED.tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmpFDED.tmp.exe"3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmpFDED.tmp.exe
tmpFDED.tmp.exe
tmpFDED.tmp.exe
memory/3160-140-0x0000000001661000-0x0000000001664000-memory.dmp
memory/4396-142-0x0000000000400000-0x0000000000407000-memory.dmp
memory/4396-144-0x0000000000400000-0x0000000000407000-memory.dmp
memory/4732-134-0x0000000002AE0000-0x0000000002AF2000-memory.dmp
memory/4732-135-0x00007FFA2BB70000-0x00007FFA2C631000-memory.dmp
memory/4732-132-0x00000000008C0000-0x000000000098C000-memory.dmp
memory/4732-133-0x000000001BBF0000-0x000000001BCFA000-memory.dmp
memory/4732-136-0x000000001BD00000-0x000000001BD3C000-memory.dmp
memory/4732-145-0x000000001BDC0000-0x000000001BE36000-memory.dmp
memory/4732-146-0x000000001BD90000-0x000000001BDAE000-memory.dmp
memory/4732-147-0x000000001C9D0000-0x000000001CB92000-memory.dmp
memory/4732-148-0x000000001D0D0000-0x000000001D5F8000-memory.dmp
memory/4732-149-0x000000001CDA0000-0x000000001CDF0000-memory.dmp
memory/4732-150-0x00007FFA2BB70000-0x00007FFA2C631000-memory.dmp
memory/4732-151-0x00007FFA2BB70000-0x00007FFA2C631000-memory.dmp