Analysis
- max time kernel
142s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
03/02/2024, 14:17
General
- Target 8c8a12ad071e2916f1601a12879c14dd.exe
- Size 115KB
- Sample240203-rlpb1sbda2
- SHA256 f71318cf8ed1b720cae18bbbc39486327f4d982d6ff02ec0b571ac2b6945c195
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 16 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
- UPX packed file 18 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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\8c8a12ad071e2916f1601a12879c14dd.exe"C:\Users\Admin\AppData\Local\Temp\8c8a12ad071e2916f1601a12879c14dd.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\8c8a12ad071e2916f1601a12879c14dd.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/1692-31-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-35-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-20-0x0000000000730000-0x0000000000731000-memory.dmp
memory/1692-68-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-24-0x00000000009C0000-0x00000000009CE000-memory.dmp
memory/1692-27-0x00000000009B0000-0x00000000009B1000-memory.dmp
memory/1692-28-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-29-0x0000000000790000-0x0000000000798000-memory.dmp
memory/1692-30-0x00000000009C0000-0x00000000009CE000-memory.dmp
memory/1692-65-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-32-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-62-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-38-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-41-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-44-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-47-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-50-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-53-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-56-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1692-59-0x0000000000400000-0x0000000000452000-memory.dmp
memory/4488-11-0x0000000000400000-0x0000000000452000-memory.dmp
memory/4488-0-0x0000000000400000-0x0000000000452000-memory.dmp
memory/4488-1-0x00000000005A0000-0x00000000005A1000-memory.dmp