Analysis
- max time kernel
160s - max time network
135s - platform
windows10_x64 - resource
win10-en - submitted
08/09/2021, 06:26
Static task
static1
Behavioral task
behavioral1
Sample
233a32946a5f7c39a375a2da278a2f7b2f0e1ac9f29449183dde119adf6d3ad6.dll
Resource
win7v20210408
0 signatures
0 seconds
General
- Target 233a32946a5f7c39a375a2da278a2f7b2f0e1ac9f29449183dde119adf6d3ad6.dll
- Size 1.7MB
- Sample210908-g69hkshbar
- SHA256 233a32946a5f7c39a375a2da278a2f7b2f0e1ac9f29449183dde119adf6d3ad6
- MD5 5a0b485d4984b7be9a599d629fae3e50
- SHA1 f4b88152d53afe32eb770d2aacd559b654d620c2
- SHA512 aa28d142e13a871b8319ed43c23c460e8f4b19dd944708091932a3563cd52b11710fa65a929db4b2f8a131bc85da57be1742b8548e54c580e5234e602fc1338b
- MD5 SHA1 SHA512
Malware Config
Signatures
-
resource yara_rule behavioral2/memory/3008-122-0x00000000001A0000-0x00000000001A1000-memory.dmp dridex_stager_shellcode - Executes dropped EXE 4 IoCs
pid Process 3148 Narrator.exe 3888 DmNotificationBroker.exe 1908 msdt.exe 3932 LockScreenContentServer.exe - Loads dropped DLL 3 IoCs
pid Process 3888 DmNotificationBroker.exe 1908 msdt.exe 3932 LockScreenContentServer.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wzmtblrj = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\SystemCertificates\\My\\CTLs\\17E\\msdt.exe" Process not Found -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA LockScreenContentServer.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA DmNotificationBroker.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA msdt.exe - Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance Process not Found Key created \REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3556 regsvr32.exe 3556 regsvr32.exe 3556 regsvr32.exe 3556 regsvr32.exe 3556 regsvr32.exe 3556 regsvr32.exe 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found 3008 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3008 Process not Found - Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeShutdownPrivilege 3008 Process not Found Token: SeCreatePagefilePrivilege 3008 Process not Found Token: SeShutdownPrivilege 3008 Process not Found Token: SeCreatePagefilePrivilege 3008 Process not Found Token: SeShutdownPrivilege 3008 Process not Found Token: SeCreatePagefilePrivilege 3008 Process not Found Token: SeShutdownPrivilege 3008 Process not Found Token: SeCreatePagefilePrivilege 3008 Process not Found - Suspicious use of UnmapMainImage 1 IoCs
pid Process 3008 Process not Found - Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 3008 wrote to memory of 3892 3008 Process not Found 76 PID 3008 wrote to memory of 3892 3008 Process not Found 76 PID 3008 wrote to memory of 2640 3008 Process not Found 80 PID 3008 wrote to memory of 2640 3008 Process not Found 80 PID 3008 wrote to memory of 3888 3008 Process not Found 81 PID 3008 wrote to memory of 3888 3008 Process not Found 81 PID 3008 wrote to memory of 1928 3008 Process not Found 82 PID 3008 wrote to memory of 1928 3008 Process not Found 82 PID 3008 wrote to memory of 1908 3008 Process not Found 84 PID 3008 wrote to memory of 1908 3008 Process not Found 84 PID 3008 wrote to memory of 3972 3008 Process not Found 85 PID 3008 wrote to memory of 3972 3008 Process not Found 85 PID 3008 wrote to memory of 3932 3008 Process not Found 86 PID 3008 wrote to memory of 3932 3008 Process not Found 86
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\233a32946a5f7c39a375a2da278a2f7b2f0e1ac9f29449183dde119adf6d3ad6.dll1⤵
- Suspicious behavior: EnumeratesProcesses
PID:3556
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C:\Windows\system32\Narrator.exeC:\Windows\system32\Narrator.exe1⤵PID:3892
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C:\Users\Admin\AppData\Local\djYtcWZA\Narrator.exeC:\Users\Admin\AppData\Local\djYtcWZA\Narrator.exe1⤵
- Executes dropped EXE
PID:3148
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C:\Windows\system32\DmNotificationBroker.exeC:\Windows\system32\DmNotificationBroker.exe1⤵PID:2640
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C:\Users\Admin\AppData\Local\EsaAB\DmNotificationBroker.exeC:\Users\Admin\AppData\Local\EsaAB\DmNotificationBroker.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:3888
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C:\Windows\system32\msdt.exeC:\Windows\system32\msdt.exe1⤵PID:1928
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C:\Users\Admin\AppData\Local\M2g92CF8d\msdt.exeC:\Users\Admin\AppData\Local\M2g92CF8d\msdt.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:1908
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C:\Windows\system32\LockScreenContentServer.exeC:\Windows\system32\LockScreenContentServer.exe1⤵PID:3972
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C:\Users\Admin\AppData\Local\HF3OYKA5\LockScreenContentServer.exeC:\Users\Admin\AppData\Local\HF3OYKA5\LockScreenContentServer.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:3932