Analysis
- max time kernel
137s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
18/02/2022, 17:52
General
- Target DHL Delivery Invoice.pdf.exe
- Size 803KB
- Sample220218-wfrbmsdfcl
- SHA256 39f3082d471fc7021c55f88ffaf38bc1996fdfe73685b526d1f5b2fafddf3e52
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
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Port
587
-
Username
-
Password
graceofgod@amen
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 6 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 8 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\DHL Delivery Invoice.pdf.exe"C:\Users\Admin\AppData\Local\Temp\DHL Delivery Invoice.pdf.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\sJtgBcvvrCla.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sJtgBcvvrCla" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEB38.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/484-150-0x0000000004B10000-0x0000000004B11000-memory.dmp
memory/484-145-0x0000000004F50000-0x0000000004F72000-memory.dmp
memory/484-166-0x0000000007420000-0x0000000007428000-memory.dmp
memory/484-165-0x0000000007440000-0x000000000745A000-memory.dmp
memory/484-164-0x0000000007330000-0x000000000733E000-memory.dmp
memory/484-163-0x0000000007380000-0x0000000007416000-memory.dmp
memory/484-161-0x000000007F070000-0x000000007F071000-memory.dmp
memory/484-141-0x00000000024D0000-0x0000000002506000-memory.dmp
memory/484-160-0x0000000007100000-0x000000000711A000-memory.dmp
memory/484-151-0x0000000004B12000-0x0000000004B13000-memory.dmp
memory/484-144-0x0000000005150000-0x0000000005778000-memory.dmp
memory/484-155-0x0000000004B15000-0x0000000004B17000-memory.dmp
memory/484-146-0x0000000005070000-0x00000000050D6000-memory.dmp
memory/484-159-0x0000000007750000-0x0000000007DCA000-memory.dmp
memory/484-147-0x00000000057F0000-0x0000000005856000-memory.dmp
memory/484-149-0x000000007454E000-0x000000007454F000-memory.dmp
memory/484-158-0x00000000063B0000-0x00000000063CE000-memory.dmp
memory/484-157-0x0000000071940000-0x000000007198C000-memory.dmp
memory/484-162-0x0000000007170000-0x000000000717A000-memory.dmp
memory/484-156-0x00000000063F0000-0x0000000006422000-memory.dmp
memory/484-154-0x0000000005E00000-0x0000000005E1E000-memory.dmp
memory/1624-143-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1624-152-0x000000007454E000-0x000000007454F000-memory.dmp
memory/1624-169-0x0000000004F41000-0x0000000004F42000-memory.dmp
memory/1624-168-0x00000000061E0000-0x00000000061EA000-memory.dmp
memory/1624-148-0x0000000005430000-0x00000000059D4000-memory.dmp
memory/1624-167-0x0000000006210000-0x0000000006260000-memory.dmp
memory/1624-153-0x0000000004F40000-0x0000000004F41000-memory.dmp
memory/2352-139-0x0000021B466D0000-0x0000021B466D4000-memory.dmp
memory/2352-138-0x0000021B44020000-0x0000021B44030000-memory.dmp
memory/2352-137-0x0000021B43950000-0x0000021B43960000-memory.dmp
memory/2996-140-0x00000000058A0000-0x000000000593C000-memory.dmp
memory/2996-136-0x00000000052E0000-0x00000000052E1000-memory.dmp
memory/2996-134-0x000000007454E000-0x000000007454F000-memory.dmp
memory/2996-133-0x0000000000940000-0x0000000000A10000-memory.dmp
memory/2996-135-0x0000000005560000-0x00000000055F2000-memory.dmp