Analysis
- max time kernel
120s - max time network
119s - platform
windows7_x64 - resource
win7v20201028 - submitted
09/11/2020, 19:59
General
- Target Fwd Overdue balance request.exe
- Size 525KB
- Sample201109-4p5drmp8b2
- SHA256 d3f1a9f5aee95facc51d611b7deeef7da85a30c028be4a3cc9cd10d0e7bf99cf
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
Ijeomam288
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
- AgentTesla Payload 4 IoCs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- 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
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Fwd Overdue balance request.exe"C:\Users\Admin\AppData\Local\Temp\Fwd Overdue balance request.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Fwd Overdue balance request.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/240-0-0x0000000074120000-0x000000007480E000-memory.dmp
memory/240-1-0x0000000001270000-0x0000000001271000-memory.dmp
memory/240-3-0x0000000000230000-0x0000000000232000-memory.dmp
memory/240-4-0x0000000000D70000-0x0000000000DC0000-memory.dmp
memory/2036-5-0x0000000000400000-0x0000000000450000-memory.dmp
memory/2036-7-0x0000000000400000-0x0000000000450000-memory.dmp
memory/2036-8-0x0000000000400000-0x0000000000450000-memory.dmp
memory/2036-9-0x0000000074120000-0x000000007480E000-memory.dmp