Analysis
- max time kernel
119s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
24/04/2023, 06:38
General
- Target Cheque.exe
- Size 535KB
- Sample230424-hd24gabh2x
- SHA256 25ca89356d4b80a8ec0bb2d4d071fb4250dbb8920d3b9b1a556708ce69c4d73d
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.strictfacilityservices.com
-
Port
587
-
Username
-
Password
SFS!@#321
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- 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
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Cheque.exe"C:\Users\Admin\AppData\Local\Temp\Cheque.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fIDoaCsDSq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF4F4.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\Cheque.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\Cheque.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
Cheque.exe.log
tmpF4F4.tmp
memory/3528-136-0x0000000005130000-0x00000000051CC000-memory.dmp
memory/3528-133-0x0000000000630000-0x00000000006BC000-memory.dmp
memory/3528-137-0x0000000005070000-0x000000000507A000-memory.dmp
memory/3528-138-0x00000000052A0000-0x00000000052B0000-memory.dmp
memory/3528-139-0x00000000052A0000-0x00000000052B0000-memory.dmp
memory/3528-135-0x0000000005090000-0x0000000005122000-memory.dmp
memory/3528-134-0x0000000005640000-0x0000000005BE4000-memory.dmp
memory/3680-143-0x0000000000400000-0x0000000000430000-memory.dmp
memory/3680-146-0x0000000005410000-0x0000000005476000-memory.dmp
memory/3680-147-0x0000000005490000-0x00000000054A0000-memory.dmp
memory/3680-148-0x00000000066D0000-0x0000000006720000-memory.dmp
memory/3680-149-0x00000000069F0000-0x0000000006BB2000-memory.dmp
memory/3680-150-0x0000000005490000-0x00000000054A0000-memory.dmp