Analysis
- max time kernel
150s - max time network
126s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
31/08/2022, 07:02
General
- Target 8c6fea45b61ff93dbeafe30d209bf92d.exe
- Size 726KB
- Sample220831-htr87saeeq
- SHA256 cc15b38a983b75a109fdc1998d831abc4ba1b2b7cceb07303d1b4302ea118c06
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\8c6fea45b61ff93dbeafe30d209bf92d.exe"C:\Users\Admin\AppData\Local\Temp\8c6fea45b61ff93dbeafe30d209bf92d.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\tmpD2D5.tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmpD2D5.tmp.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\tmpD2D5.tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmpD2D5.tmp.exe"3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmpD2D5.tmp.exe
tmpD2D5.tmp.exe
tmpD2D5.tmp.exe
memory/3416-140-0x0000000000DA1000-0x0000000000DA4000-memory.dmp
memory/3612-147-0x000000001B720000-0x000000001B73E000-memory.dmp
memory/3612-150-0x000000001E6B0000-0x000000001E872000-memory.dmp
memory/3612-135-0x000000001B740000-0x000000001B752000-memory.dmp
memory/3612-134-0x000000001C850000-0x000000001C95A000-memory.dmp
memory/3612-138-0x000000001C740000-0x000000001C77C000-memory.dmp
memory/3612-152-0x00007FFF78170000-0x00007FFF78C31000-memory.dmp
memory/3612-133-0x00007FFF78170000-0x00007FFF78C31000-memory.dmp
memory/3612-151-0x000000001EDB0000-0x000000001F2D8000-memory.dmp
memory/3612-145-0x000000001C780000-0x000000001C7D0000-memory.dmp
memory/3612-146-0x000000001D7B0000-0x000000001D826000-memory.dmp
memory/3612-132-0x00000000007A0000-0x000000000085A000-memory.dmp
memory/3612-148-0x00007FFF78170000-0x00007FFF78C31000-memory.dmp
memory/4320-149-0x0000000000400000-0x0000000000407000-memory.dmp
memory/4320-144-0x0000000000400000-0x0000000000407000-memory.dmp
memory/4320-142-0x0000000000400000-0x0000000000407000-memory.dmp