Analysis
- max time kernel
61s - max time network
99s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:06
General
- Target 33bef8d54cf93b30251b1b60dabee88a.exe
- Size 408KB
- Sample201109-tn484nd6d2
- SHA256 bcb7da4d62467320eadecfe6d6157941a2b73d24a22925465bacf3c434aae525
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
premium57.web-hosting.com
-
Port
587
-
Username
-
Password
Goodboy123??
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 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 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\33bef8d54cf93b30251b1b60dabee88a.exe"C:\Users\Admin\AppData\Local\Temp\33bef8d54cf93b30251b1b60dabee88a.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qeFENLShy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7D54.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\33bef8d54cf93b30251b1b60dabee88a.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1124-3-0x0000000005570000-0x0000000005571000-memory.dmp
memory/1124-5-0x00000000050D0000-0x00000000050D1000-memory.dmp
memory/1124-6-0x00000000085B0000-0x00000000085B1000-memory.dmp
memory/1124-7-0x0000000008580000-0x0000000008582000-memory.dmp
memory/1124-8-0x0000000008880000-0x00000000088D2000-memory.dmp
memory/1124-0-0x0000000073CB0000-0x000000007439E000-memory.dmp
memory/1124-4-0x0000000005110000-0x0000000005111000-memory.dmp
memory/1124-1-0x00000000004A0000-0x00000000004A1000-memory.dmp
memory/3008-11-0x0000000000400000-0x0000000000450000-memory.dmp
memory/3008-14-0x0000000073CB0000-0x000000007439E000-memory.dmp
memory/3008-19-0x0000000005700000-0x0000000005701000-memory.dmp
memory/3008-20-0x0000000006210000-0x0000000006211000-memory.dmp