Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
31/05/2023, 08:30
General
- Target Nbvkrvfanxfmla.exe
- Size 899KB
- Sample230531-kd9vesec21
- SHA256 ad5131dfaba269367d500cd343ccc1956434b4cb21c2fcd163545c433deded66
Malware Config
Signatures
- ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
- ModiLoader Second Stage 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 2 IoCs
- Program crash 1 IoCs
- Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Script User-Agent 2 IoCs
Uses user-agent string associated with script host/environment.
- Suspicious behavior: EnumeratesProcesses 58 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Nbvkrvfanxfmla.exe"C:\Users\Admin\AppData\Local\Temp\Nbvkrvfanxfmla.exe"2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
-
C:\Users\Public\Libraries\afvrkvbN.pif"C:\Users\Public\Libraries\afvrkvbN.pif"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
-
-
-
C:\Windows\SysWOW64\NETSTAT.EXE"C:\Windows\SysWOW64\NETSTAT.EXE"2⤵
- Suspicious use of SetThreadContext
- Gathers network information
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵
-
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 2976 -s 1364⤵
- Program crash
-
-
-
-
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 436 -p 2976 -ip 29761⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
afvrkvbN.pif
afvrkvbN.pif
memory/1848-161-0x0000000001160000-0x00000000011EF000-memory.dmp
memory/1848-159-0x0000000001330000-0x000000000167A000-memory.dmp
memory/1848-158-0x0000000000C20000-0x0000000000C4D000-memory.dmp
memory/1848-157-0x0000000000F40000-0x0000000000F4B000-memory.dmp
memory/1848-154-0x0000000000F40000-0x0000000000F4B000-memory.dmp
memory/2868-143-0x0000000010410000-0x000000001043F000-memory.dmp
memory/2868-142-0x0000000010410000-0x000000001043F000-memory.dmp
memory/2868-134-0x0000000003FB0000-0x0000000003FE2000-memory.dmp
memory/2868-136-0x0000000000400000-0x00000000004E6000-memory.dmp
memory/2868-137-0x00000000027D0000-0x00000000027D1000-memory.dmp
memory/2868-133-0x00000000027D0000-0x00000000027D1000-memory.dmp
memory/3232-164-0x00000000090D0000-0x00000000091D9000-memory.dmp
memory/3232-160-0x00000000090D0000-0x00000000091D9000-memory.dmp
memory/3232-152-0x0000000008F00000-0x0000000009012000-memory.dmp
memory/3776-155-0x0000000000400000-0x000000000041A000-memory.dmp
memory/3776-156-0x0000000010410000-0x000000001043F000-memory.dmp
memory/3776-144-0x00000000001D0000-0x00000000001D1000-memory.dmp
memory/3776-151-0x0000000000A30000-0x0000000000A40000-memory.dmp
memory/3776-150-0x0000000002560000-0x00000000028AA000-memory.dmp
memory/3776-149-0x0000000010410000-0x000000001043F000-memory.dmp
memory/3776-148-0x0000000010410000-0x000000001043F000-memory.dmp