Analysis
- max time kernel
61s - max time network
59s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
02/09/2022, 14:02
General
- Target data64_1.exe
- Size 487KB
- Sample220902-rb5agshdc2
- SHA256 34cdcd0ccda9ba7a51d1f6aaaa8a2a6d6c64f2fb58627a5f0b94d922be6adce1
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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\data64_1.exe"C:\Users\Admin\AppData\Local\Temp\data64_1.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\tmpB7FA.tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmpB7FA.tmp.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\tmpB7FA.tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmpB7FA.tmp.exe"3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmpB7FA.tmp.exe
tmpB7FA.tmp.exe
tmpB7FA.tmp.exe
memory/1620-140-0x00000000014F0000-0x00000000014F3000-memory.dmp
memory/4204-136-0x00000000023B0000-0x00000000023EC000-memory.dmp
memory/4204-132-0x0000000000270000-0x00000000002EE000-memory.dmp
memory/4204-135-0x0000000000A90000-0x0000000000AA2000-memory.dmp
memory/4204-134-0x000000001CC30000-0x000000001CD3A000-memory.dmp
memory/4204-133-0x00007FFAB7130000-0x00007FFAB7BF1000-memory.dmp
memory/4204-144-0x000000001DCA0000-0x000000001DD16000-memory.dmp
memory/4204-146-0x00000000024D0000-0x00000000024EE000-memory.dmp
memory/4204-147-0x000000001DEF0000-0x000000001E0B2000-memory.dmp
memory/4204-148-0x000000001E5F0000-0x000000001EB18000-memory.dmp
memory/4204-149-0x00007FFAB7130000-0x00007FFAB7BF1000-memory.dmp
memory/4964-142-0x0000000000400000-0x0000000000407000-memory.dmp
memory/4964-145-0x0000000000400000-0x0000000000407000-memory.dmp