Analysis
- max time kernel
134s - max time network
110s - platform
windows10_x64 - resource
win10v20210408 - submitted
30/04/2021, 14:12
General
- Target c4777f4fb1ecb344a2892608958b822b.exe
- Size 405KB
- Sample210430-759za2nvp2
- SHA256 88f5ce92e8fad4501a85cc2b640563f80df7a2be70f2ce2c2c85f26dfe32da90
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.1und1.de
-
Port
587
-
Username
-
Password
#Bolonka191
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Drops file in Drivers directory 1 IoCs
- Loads dropped DLL 1 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.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\c4777f4fb1ecb344a2892608958b822b.exe"C:\Users\Admin\AppData\Local\Temp\c4777f4fb1ecb344a2892608958b822b.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\c4777f4fb1ecb344a2892608958b822b.exe"C:\Users\Admin\AppData\Local\Temp\c4777f4fb1ecb344a2892608958b822b.exe"2⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/672-115-0x0000000002280000-0x00000000022A3000-memory.dmp
memory/3000-117-0x0000000000400000-0x000000000044B000-memory.dmp
memory/3000-118-0x0000000004870000-0x0000000004871000-memory.dmp
memory/3000-119-0x0000000002280000-0x00000000022B6000-memory.dmp
memory/3000-122-0x0000000004873000-0x0000000004874000-memory.dmp
memory/3000-121-0x0000000004872000-0x0000000004873000-memory.dmp
memory/3000-123-0x0000000004880000-0x0000000004881000-memory.dmp
memory/3000-124-0x0000000004874000-0x0000000004875000-memory.dmp
memory/3000-125-0x0000000004F10000-0x0000000004F11000-memory.dmp
memory/3000-126-0x00000000057B0000-0x00000000057B1000-memory.dmp
memory/3000-127-0x00000000057E0000-0x00000000057E1000-memory.dmp
memory/3000-128-0x0000000005A20000-0x0000000005A21000-memory.dmp
memory/3000-129-0x00000000007F0000-0x00000000007F1000-memory.dmp