Analysis
- max time kernel
11s - max time network
105s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:59
General
- Target Fwd Overdue balance request.exe
- Size 525KB
- Sample201109-4p5drmp8b2
- SHA256 d3f1a9f5aee95facc51d611b7deeef7da85a30c028be4a3cc9cd10d0e7bf99cf
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
Ijeomam288
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 2 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 8 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/408-9-0x0000000000400000-0x0000000000450000-memory.dmp
memory/408-18-0x0000000005820000-0x0000000005821000-memory.dmp
memory/408-17-0x00000000051C0000-0x00000000051C1000-memory.dmp
memory/408-12-0x0000000073A70000-0x000000007415E000-memory.dmp
memory/1192-4-0x00000000052A0000-0x00000000052A1000-memory.dmp
memory/1192-8-0x0000000007790000-0x00000000077E0000-memory.dmp
memory/1192-7-0x0000000005800000-0x0000000005802000-memory.dmp
memory/1192-6-0x00000000075F0000-0x00000000075F1000-memory.dmp
memory/1192-5-0x0000000005240000-0x0000000005241000-memory.dmp
memory/1192-0-0x0000000073A70000-0x000000007415E000-memory.dmp
memory/1192-3-0x0000000005860000-0x0000000005861000-memory.dmp
memory/1192-1-0x0000000000980000-0x0000000000981000-memory.dmp