Analysis
- max time kernel
126s - max time network
128s - platform
windows10_x64 - resource
win10-en-20211104 - submitted
02/12/2021, 06:50
General
- Target Payment Advice_PDF.exe
- Size 720KB
- Sample211202-hlye9afdf6
- SHA256 1198a451bd5c647dc451f747b3fe9013f178c393822007ebffb836cdf8431b6a
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.huiijingco.com
-
Port
587
-
Username
-
Password
lNLUrZT2
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Payment Advice_PDF.exe"C:\Users\Admin\AppData\Local\Temp\Payment Advice_PDF.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Payment Advice_PDF.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\Payment Advice_PDF.exe"C:\Users\Admin\AppData\Local\Temp\Payment Advice_PDF.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/904-148-0x00000000086B0000-0x00000000086B1000-memory.dmp
memory/904-240-0x00000000050D3000-0x00000000050D4000-memory.dmp
memory/904-171-0x0000000009C70000-0x0000000009C71000-memory.dmp
memory/904-170-0x00000000098A0000-0x00000000098A1000-memory.dmp
memory/904-169-0x000000007E830000-0x000000007E831000-memory.dmp
memory/904-164-0x0000000009740000-0x0000000009741000-memory.dmp
memory/904-157-0x0000000009760000-0x0000000009793000-memory.dmp
memory/904-150-0x0000000003470000-0x0000000003471000-memory.dmp
memory/904-149-0x00000000089F0000-0x00000000089F1000-memory.dmp
memory/904-131-0x0000000003470000-0x0000000003471000-memory.dmp
memory/904-130-0x0000000003470000-0x0000000003471000-memory.dmp
memory/904-145-0x00000000050D2000-0x00000000050D3000-memory.dmp
memory/904-132-0x0000000004E90000-0x0000000004E91000-memory.dmp
memory/904-133-0x0000000007B10000-0x0000000007B11000-memory.dmp
memory/904-147-0x0000000008200000-0x0000000008201000-memory.dmp
memory/904-144-0x00000000050D0000-0x00000000050D1000-memory.dmp
memory/904-136-0x0000000007900000-0x0000000007901000-memory.dmp
memory/904-139-0x00000000079A0000-0x00000000079A1000-memory.dmp
memory/904-142-0x0000000008320000-0x0000000008321000-memory.dmp
memory/1724-127-0x0000000005E60000-0x0000000005F00000-memory.dmp
memory/1724-129-0x0000000006030000-0x0000000006031000-memory.dmp
memory/1724-118-0x0000000000830000-0x0000000000831000-memory.dmp
memory/1724-126-0x0000000005F00000-0x0000000005F01000-memory.dmp
memory/1724-125-0x0000000005B90000-0x0000000005B91000-memory.dmp
memory/1724-124-0x0000000005360000-0x0000000005368000-memory.dmp
memory/1724-123-0x0000000005290000-0x0000000005291000-memory.dmp
memory/1724-122-0x0000000005090000-0x000000000558E000-memory.dmp
memory/1724-121-0x0000000005130000-0x0000000005131000-memory.dmp
memory/1724-120-0x0000000005590000-0x0000000005591000-memory.dmp
memory/4004-134-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4004-146-0x0000000004DD0000-0x00000000052CE000-memory.dmp