Analysis
- max time kernel
150s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
02/03/2023, 13:16
General
- Target 三月命令 #4749HD-3DH2D-AN1A3-ZNTL3-CBU49-1ZMT40-24HAN-4910CK-3801Y-RA271.exe
- Size 11KB
- Sample230302-qhsplacf8x
- SHA256 8e82fb037b606bf25cf55bd40d74105ad0e38d7b3cfa85c6de48babb3dde7bfe
Malware Config
Extracted
-
purecrypter
-
http://vinosbiodinamicos.com/Mugkiaa.dat
Signatures
- PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 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 2 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\三月命令 #4749HD-3DH2D-AN1A3-ZNTL3-CBU49-1ZMT40-24HAN-4910CK-3801Y-RA271.exe"C:\Users\Admin\AppData\Local\Temp\三月命令 #4749HD-3DH2D-AN1A3-ZNTL3-CBU49-1ZMT40-24HAN-4910CK-3801Y-RA271.exe"1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
__PSScriptPolicyTest_ogor14mr.el3.ps1
memory/3128-156-0x0000000006890000-0x00000000068AA000-memory.dmp
memory/3128-152-0x0000000006390000-0x00000000063AE000-memory.dmp
memory/3128-159-0x0000000004EE0000-0x0000000004EF0000-memory.dmp
memory/3128-158-0x0000000004EE0000-0x0000000004EF0000-memory.dmp
memory/3128-155-0x00000000079F0000-0x000000000806A000-memory.dmp
memory/3128-139-0x0000000002DD0000-0x0000000002E06000-memory.dmp
memory/3128-140-0x0000000005520000-0x0000000005B48000-memory.dmp
memory/3128-141-0x0000000005B50000-0x0000000005BB6000-memory.dmp
memory/3128-154-0x0000000004EE0000-0x0000000004EF0000-memory.dmp
memory/3128-142-0x0000000005D30000-0x0000000005D96000-memory.dmp
memory/3128-153-0x0000000004EE0000-0x0000000004EF0000-memory.dmp
memory/4448-137-0x0000000002E10000-0x0000000002E20000-memory.dmp
memory/4448-135-0x00000000052D0000-0x0000000005362000-memory.dmp
memory/4448-138-0x0000000007110000-0x0000000007132000-memory.dmp
memory/4448-133-0x00000000009F0000-0x00000000009F8000-memory.dmp
memory/4448-157-0x0000000002E10000-0x0000000002E20000-memory.dmp
memory/4448-134-0x00000000059F0000-0x0000000005F94000-memory.dmp
memory/4448-136-0x0000000002E20000-0x0000000002E2A000-memory.dmp
memory/4448-163-0x0000000007970000-0x00000000079C0000-memory.dmp