Analysis
- max time kernel
142s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220721-en - resource tags
- submitted
08/08/2022, 08:29
General
- Target 8f53ac20b7777477c10ecbe163968c472457d3819ebafb20f232c5b1a448eb1b.exe
- Size 413KB
- Sample220808-kdkwasgacl
- SHA256 8f53ac20b7777477c10ecbe163968c472457d3819ebafb20f232c5b1a448eb1b
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\8f53ac20b7777477c10ecbe163968c472457d3819ebafb20f232c5b1a448eb1b.exe"C:\Users\Admin\AppData\Local\Temp\8f53ac20b7777477c10ecbe163968c472457d3819ebafb20f232c5b1a448eb1b.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\tmp761F.tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp761F.tmp.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\tmp761F.tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp761F.tmp.exe"3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmp761F.tmp.exe
tmp761F.tmp.exe
tmp761F.tmp.exe
memory/3800-139-0x000000001C400000-0x000000001C412000-memory.dmp
memory/3800-144-0x000000001DEA0000-0x000000001DEF0000-memory.dmp
memory/3800-148-0x00007FFA85630000-0x00007FFA860F1000-memory.dmp
memory/3800-147-0x000000001EC60000-0x000000001F188000-memory.dmp
memory/3800-130-0x0000000000B10000-0x0000000000B7C000-memory.dmp
memory/3800-131-0x00007FFA85630000-0x00007FFA860F1000-memory.dmp
memory/3800-140-0x000000001C460000-0x000000001C49C000-memory.dmp
memory/3800-146-0x000000001E560000-0x000000001E722000-memory.dmp
memory/3800-142-0x000000001DF20000-0x000000001DF96000-memory.dmp
memory/3800-143-0x000000001C440000-0x000000001C45E000-memory.dmp
memory/3800-135-0x000000001DC90000-0x000000001DD9A000-memory.dmp
memory/3800-145-0x00007FFA85630000-0x00007FFA860F1000-memory.dmp
memory/3972-141-0x0000000000400000-0x0000000000407000-memory.dmp
memory/3972-137-0x0000000000400000-0x0000000000407000-memory.dmp