Analysis
- max time kernel
94s - max time network
111s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:56
General
- Target payment005.exe
- Size 386KB
- Sample201109-cd9d7sfkmj
- SHA256 a5fc1c186bd2f864a83e308d0ace39f6efdeeaa76ac5eb56ae75dad3e9b0c96c
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.brahmandtour.com
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Port
587
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Username
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Password
^I(jM%h6dQX2
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\payment005.exe"C:\Users\Admin\AppData\Local\Temp\payment005.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sLiFvfPBfZiwhw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC336.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\payment005.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2748-13-0x0000000073940000-0x000000007402E000-memory.dmp
memory/2748-10-0x0000000000400000-0x000000000044A000-memory.dmp
memory/2748-18-0x0000000005670000-0x0000000005671000-memory.dmp
memory/2748-19-0x00000000061D0000-0x00000000061D1000-memory.dmp
memory/2748-21-0x0000000006950000-0x0000000006951000-memory.dmp
memory/3372-5-0x0000000005730000-0x0000000005731000-memory.dmp
memory/3372-6-0x0000000005D90000-0x0000000005DDC000-memory.dmp
memory/3372-7-0x00000000063E0000-0x00000000063E1000-memory.dmp
memory/3372-4-0x0000000003090000-0x000000000309B000-memory.dmp
memory/3372-3-0x00000000055F0000-0x00000000055F1000-memory.dmp
memory/3372-1-0x0000000000D40000-0x0000000000D41000-memory.dmp
memory/3372-0-0x0000000073940000-0x000000007402E000-memory.dmp