Analysis
- max time kernel
74s - max time network
20s - platform
windows7_x64 - resource
win7v200722 - submitted
30/08/2020, 15:44
General
- Target Payment Slip.exe
- Size 772KB
- Sample200830-mwch8kv81a
- SHA256 fb51d5ec0f3c5b0ea82d4a37cd9a53e070efaaa4f067ea89301c089e0dea8a76
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
xVVKJXZ2
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 IoCs
- 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.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Payment Slip.exe"C:\Users\Admin\AppData\Local\Temp\Payment Slip.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZHBVUn" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAE1A.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\Payment Slip.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1300-0-0x00000000742F0000-0x00000000749DE000-memory.dmp
memory/1300-1-0x0000000000F40000-0x0000000000F41000-memory.dmp
memory/1300-3-0x00000000004E0000-0x00000000004E3000-memory.dmp
memory/1300-4-0x0000000004880000-0x0000000004929000-memory.dmp
memory/1300-5-0x0000000005040000-0x00000000050DD000-memory.dmp
memory/1984-8-0x0000000000400000-0x0000000000466000-memory.dmp
memory/1984-10-0x0000000000400000-0x0000000000466000-memory.dmp
memory/1984-11-0x0000000000400000-0x0000000000466000-memory.dmp
memory/1984-12-0x00000000742F0000-0x00000000749DE000-memory.dmp