Analysis
- max time kernel
138s - max time network
136s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
11/05/2022, 12:09
General
- Target PO EM212843_pdf.exe
- Size 678KB
- Sample220511-pbe99agde9
- SHA256 3982f95e9287b4848e04b2ae0e9b329720842a5cb221dff83f1ed48e2f7ad6fe
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.valtronics-ae.com
-
Port
587
-
Username
-
Password
YTMIlIR0
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 1 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.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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 6 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PO EM212843_pdf.exe"C:\Users\Admin\AppData\Local\Temp\PO EM212843_pdf.exe"1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- 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\PO EM212843_pdf.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Users\Admin\AppData\Local\Temp\PO EM212843_pdf.exe"C:\Users\Admin\AppData\Local\Temp\PO EM212843_pdf.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\PO EM212843_pdf.exe"C:\Users\Admin\AppData\Local\Temp\PO EM212843_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/2208-142-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2208-155-0x0000000006370000-0x00000000063C0000-memory.dmp
memory/4552-131-0x0000000005610000-0x0000000005BB4000-memory.dmp
memory/4552-132-0x0000000005060000-0x00000000050F2000-memory.dmp
memory/4552-133-0x0000000004FF0000-0x0000000004FFA000-memory.dmp
memory/4552-134-0x0000000007650000-0x00000000076EC000-memory.dmp
memory/4552-135-0x0000000007910000-0x0000000007976000-memory.dmp
memory/4552-130-0x00000000005B0000-0x000000000065E000-memory.dmp
memory/4768-143-0x0000000005C30000-0x0000000005C96000-memory.dmp
memory/4768-147-0x0000000006860000-0x000000000687E000-memory.dmp
memory/4768-138-0x0000000005590000-0x0000000005BB8000-memory.dmp
memory/4768-137-0x00000000029B0000-0x00000000029E6000-memory.dmp
memory/4768-144-0x00000000062D0000-0x00000000062EE000-memory.dmp
memory/4768-145-0x0000000006900000-0x0000000006932000-memory.dmp
memory/4768-146-0x0000000074E80000-0x0000000074ECC000-memory.dmp
memory/4768-140-0x0000000005400000-0x0000000005422000-memory.dmp
memory/4768-148-0x0000000007C20000-0x000000000829A000-memory.dmp
memory/4768-149-0x00000000075E0000-0x00000000075FA000-memory.dmp
memory/4768-150-0x0000000007650000-0x000000000765A000-memory.dmp
memory/4768-151-0x0000000007860000-0x00000000078F6000-memory.dmp
memory/4768-152-0x0000000007810000-0x000000000781E000-memory.dmp
memory/4768-153-0x0000000007920000-0x000000000793A000-memory.dmp
memory/4768-154-0x0000000007900000-0x0000000007908000-memory.dmp