Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
06/03/2024, 03:09
General
- Target b65afd9ef85b3342e39134fa4ef83919.dll
- Size 740KB
- Sample240306-dntsmahf8s
- SHA256 b1029a3ba04300fc1dc1da2a6d61938a714b65f4f8ca6bf11d94ef4e557db2db
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 4 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 16 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\b65afd9ef85b3342e39134fa4ef83919.dll,#11⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\system32\shrpubw.exeC:\Windows\system32\shrpubw.exe1⤵
-
C:\Users\Admin\AppData\Local\4zMCppwbk\shrpubw.exeC:\Users\Admin\AppData\Local\4zMCppwbk\shrpubw.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
-
C:\Windows\system32\wermgr.exeC:\Windows\system32\wermgr.exe1⤵
-
C:\Users\Admin\AppData\Local\Q0b5\wermgr.exeC:\Users\Admin\AppData\Local\Q0b5\wermgr.exe1⤵
- Executes dropped EXE
-
C:\Windows\system32\LicensingUI.exeC:\Windows\system32\LicensingUI.exe1⤵
-
C:\Users\Admin\AppData\Local\Hli\LicensingUI.exeC:\Users\Admin\AppData\Local\Hli\LicensingUI.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
-
C:\Windows\system32\sessionmsg.exeC:\Windows\system32\sessionmsg.exe1⤵
-
C:\Users\Admin\AppData\Local\F4sm\sessionmsg.exeC:\Users\Admin\AppData\Local\F4sm\sessionmsg.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
shrpubw.exe
srvcli.dll
srvcli.dll
DUser.dll
sessionmsg.exe
DUI70.dll
LicensingUI.exe
wermgr.exe
Bgoltaavvu.lnk
srvcli.dll
memory/440-60-0x0000000140000000-0x00000001400BA000-memory.dmp
memory/440-54-0x0000000140000000-0x00000001400BA000-memory.dmp
memory/440-55-0x0000018DF9B10000-0x0000018DF9B17000-memory.dmp
memory/440-53-0x0000000140000000-0x00000001400BA000-memory.dmp
memory/3056-98-0x0000000140000000-0x00000001400BB000-memory.dmp
memory/3056-97-0x0000000140000000-0x00000001400BB000-memory.dmp
memory/3056-100-0x0000019456D60000-0x0000019456D67000-memory.dmp
memory/3056-104-0x0000000140000000-0x00000001400BB000-memory.dmp
memory/3420-14-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-16-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-21-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-19-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-18-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-17-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-34-0x00007FFA50270000-0x00007FFA50280000-memory.dmp
memory/3420-33-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-43-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-4-0x0000000002E60000-0x0000000002E61000-memory.dmp
memory/3420-26-0x00000000010A0000-0x00000000010A7000-memory.dmp
memory/3420-25-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-22-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-23-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-20-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-24-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-6-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-15-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-13-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-12-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-7-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-9-0x00007FFA4FC9A000-0x00007FFA4FC9B000-memory.dmp
memory/3420-10-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-11-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/3420-8-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/4736-86-0x0000000140000000-0x00000001400FF000-memory.dmp
memory/4736-79-0x0000000140000000-0x00000001400FF000-memory.dmp
memory/4736-81-0x00000183043A0000-0x00000183043A7000-memory.dmp
memory/4736-80-0x0000000140000000-0x00000001400FF000-memory.dmp
memory/4912-0-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/4912-46-0x0000000140000000-0x00000001400B9000-memory.dmp
memory/4912-2-0x0000015521E20000-0x0000015521E27000-memory.dmp