Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
16/01/2024, 10:42
General
- Target 5fb1dc0e0f42d1c1bddc4a565f5a6d9a.dll
- Size 1004KB
- Sample240116-mrnv8aaabn
- SHA256 a4b79aaad3bfb2106d78fcf6e7c03c3a3babd76c3adf68c1a41aacbd80260ba2
Malware Config
Signatures
- Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
- Dridex Shellcode 1 IoCs
Detects Dridex Payload shellcode injected in Explorer process.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 4 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5fb1dc0e0f42d1c1bddc4a565f5a6d9a.dll,#11⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\system32\tcmsetup.exeC:\Windows\system32\tcmsetup.exe1⤵
-
C:\Users\Admin\AppData\Local\3QArqvSO\tcmsetup.exeC:\Users\Admin\AppData\Local\3QArqvSO\tcmsetup.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
-
C:\Windows\system32\OptionalFeatures.exeC:\Windows\system32\OptionalFeatures.exe1⤵
-
C:\Users\Admin\AppData\Local\Ah7\OptionalFeatures.exeC:\Users\Admin\AppData\Local\Ah7\OptionalFeatures.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
-
C:\Windows\system32\msdt.exeC:\Windows\system32\msdt.exe1⤵
-
C:\Users\Admin\AppData\Local\XGpYJHgR\msdt.exeC:\Users\Admin\AppData\Local\XGpYJHgR\msdt.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
TAPI32.dll
tcmsetup.exe
OptionalFeatures.exe
appwiz.cpl
msdt.exe
wer.dll
Gvhynkxuzozqjys.lnk
memory/380-0-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/380-1-0x0000029348A50000-0x0000029348A57000-memory.dmp
memory/380-44-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3168-91-0x0000000140000000-0x00000001400FD000-memory.dmp
memory/3168-86-0x0000029105DC0000-0x0000029105DC7000-memory.dmp
memory/3324-17-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-12-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-23-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-24-0x00000000008E0000-0x00000000008E7000-memory.dmp
memory/3324-20-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-19-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-18-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-16-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-21-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-15-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-31-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-32-0x00007FFD53350000-0x00007FFD53360000-memory.dmp
memory/3324-41-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-14-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-13-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-22-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-5-0x00007FFD526EA000-0x00007FFD526EB000-memory.dmp
memory/3324-4-0x0000000000A60000-0x0000000000A61000-memory.dmp
memory/3324-7-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-11-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-10-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-8-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3324-9-0x0000000140000000-0x00000001400FB000-memory.dmp
memory/3344-57-0x0000000140000000-0x00000001400FD000-memory.dmp
memory/3344-52-0x0000000140000000-0x00000001400FD000-memory.dmp
memory/3344-51-0x000001C2E25A0000-0x000001C2E25A7000-memory.dmp
memory/3484-74-0x0000000140000000-0x00000001400FC000-memory.dmp
memory/3484-69-0x000002BF4F230000-0x000002BF4F237000-memory.dmp
memory/3484-68-0x0000000140000000-0x00000001400FC000-memory.dmp