Analysis
- max time kernel
94s - max time network
115s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:58
General
- Target Product_vershold_offersheet__sample_v1.exe
- Size 598KB
- Sample201109-j2ww3k16d2
- SHA256 5fd1a8e20efd63b0f47c74d6d85d280bce0fdf2e9843ffdf3461fc29ad26d9a7
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.almushrefcoop.com
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Port
587
-
Username
-
Password
zainab123
Extracted
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agenttesla
-
Protocol
smtp
-
Host
mail.almushrefcoop.com
-
Port
587
-
Username
-
Password
zainab123
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 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Product_vershold_offersheet__sample_v1.exe"C:\Users\Admin\AppData\Local\Temp\Product_vershold_offersheet__sample_v1.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\KZSxfbXjaf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDFB7.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Product_vershold_offersheet__sample_v1.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/996-13-0x0000000073360000-0x0000000073A4E000-memory.dmp
memory/996-18-0x0000000005DC0000-0x0000000005DC1000-memory.dmp
memory/996-22-0x0000000006B60000-0x0000000006B61000-memory.dmp
memory/996-19-0x0000000006370000-0x0000000006371000-memory.dmp
memory/996-10-0x0000000000400000-0x0000000000452000-memory.dmp
memory/4768-3-0x0000000005240000-0x0000000005241000-memory.dmp
memory/4768-4-0x00000000051A0000-0x00000000051AB000-memory.dmp
memory/4768-1-0x0000000000820000-0x0000000000821000-memory.dmp
memory/4768-0-0x0000000073360000-0x0000000073A4E000-memory.dmp
memory/4768-5-0x0000000005400000-0x0000000005401000-memory.dmp
memory/4768-7-0x0000000006060000-0x0000000006061000-memory.dmp
memory/4768-6-0x0000000005A00000-0x0000000005A53000-memory.dmp