Analysis
- max time kernel
135s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
01/06/2023, 10:42
General
- Target Yoelcvrbdj.exe
- Size 19KB
- Sample230601-mrnv8adh22
- SHA256 17e813ed934ac345e4b9b9384aaff9e5b7a20b4efc8f75ef784f06bde2420b2d
Malware Config
Extracted
-
purecrypter
-
https://cdn.discordapp.com/attachments/1113754118750752801/1113762519178285166/Khdovdpst.bmp
Extracted
-
snakekeylogger
-
https://api.telegram.org/bot5996089921:AAFFEnbgTY8Gt8G5jJy6llKhDg_Ha193t7c/sendMessage?chat_id=2054148913
Signatures
- PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Yoelcvrbdj.exe"C:\Users\Admin\AppData\Local\Temp\Yoelcvrbdj.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
__PSScriptPolicyTest_zmy44tp4.i4r.ps1
memory/1976-155-0x0000000140000000-0x0000000140024000-memory.dmp
memory/1976-159-0x0000026A3DEE0000-0x0000026A3DEF0000-memory.dmp
memory/1976-158-0x0000026A584B0000-0x0000026A58672000-memory.dmp
memory/1976-157-0x0000026A3DEE0000-0x0000026A3DEF0000-memory.dmp
memory/1980-134-0x000000001AFD0000-0x000000001AFE0000-memory.dmp
memory/1980-135-0x000000001AFD0000-0x000000001AFE0000-memory.dmp
memory/1980-136-0x000000001AF90000-0x000000001AFB2000-memory.dmp
memory/1980-133-0x0000000000320000-0x000000000032A000-memory.dmp
memory/2080-147-0x000001B391520000-0x000001B391530000-memory.dmp
memory/2080-151-0x000001B391520000-0x000001B391530000-memory.dmp
memory/2080-150-0x000001B391520000-0x000001B391530000-memory.dmp
memory/2080-149-0x000001B391520000-0x000001B391530000-memory.dmp
memory/2080-148-0x000001B391520000-0x000001B391530000-memory.dmp
memory/2080-146-0x000001B391520000-0x000001B391530000-memory.dmp