Analysis
- max time kernel
145s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
02/02/2024, 16:07
General
- Target 89f3acf8391a5357a5788fa2bd9dad67.exe
- Size 282KB
- Sample240202-tk3t5accfj
- SHA256 0575a37c5d8c484e3f6baf84d33e16809d4c413e410c2cedc729473097095d7c
Malware Config
Signatures
- ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
- UAC bypass 3 TTPs 1 IoCs
- ModiLoader Second Stage 15 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Deletes itself 1 IoCs
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 4 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 3 IoCs
- Drops file in Windows directory 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- System policy modification 1 TTPs 1 IoCs
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\89f3acf8391a5357a5788fa2bd9dad67.exe"C:\Users\Admin\AppData\Local\Temp\89f3acf8391a5357a5788fa2bd9dad67.exe"1⤵
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\mstwain32.exe"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\89f3acf8391a5357a5788fa2bd9dad67.exe"2⤵
- UAC bypass
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- System policy modification
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
cmsetac.dll
mstwain32.exe
ntdtcstp.dll
memory/1040-27-0x0000000000970000-0x0000000000978000-memory.dmp
memory/1040-32-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-22-0x0000000002360000-0x000000000236E000-memory.dmp
memory/1040-62-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-25-0x0000000002350000-0x0000000002351000-memory.dmp
memory/1040-26-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-28-0x0000000002360000-0x000000000236E000-memory.dmp
memory/1040-59-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-29-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-18-0x0000000000920000-0x0000000000921000-memory.dmp
memory/1040-35-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-38-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-41-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-44-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-47-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-50-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-53-0x0000000000400000-0x000000000044E000-memory.dmp
memory/1040-56-0x0000000000400000-0x000000000044E000-memory.dmp
memory/4080-0-0x0000000000A60000-0x0000000000A61000-memory.dmp
memory/4080-10-0x0000000000400000-0x000000000044E000-memory.dmp