Analysis
- max time kernel
34s - max time network
33s - platform
windows7_x64 - resource
win7-20230220-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
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.privateemail.com
-
Port
587
-
Username
-
Password
Jk$yZlcm39_3Sh*
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
- 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 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 4 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⤵
- 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
Loading Replay Monitor...
Downloads
memory/836-54-0x0000000001100000-0x0000000001108000-memory.dmp
memory/836-55-0x0000000004C00000-0x0000000004C40000-memory.dmp
memory/836-56-0x0000000006480000-0x00000000065E0000-memory.dmp
memory/836-57-0x0000000005750000-0x00000000057E2000-memory.dmp
memory/836-63-0x0000000004C00000-0x0000000004C40000-memory.dmp
memory/836-67-0x0000000000980000-0x00000000009B0000-memory.dmp
memory/1912-60-0x0000000002590000-0x00000000025D0000-memory.dmp
memory/1912-61-0x0000000002590000-0x00000000025D0000-memory.dmp
memory/1912-62-0x0000000002590000-0x00000000025D0000-memory.dmp
memory/1912-64-0x0000000002590000-0x00000000025D0000-memory.dmp
memory/1912-65-0x0000000002590000-0x00000000025D0000-memory.dmp