Analysis
- max time kernel
151s - max time network
127s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
21/09/2021, 08:29
Static task
static1
Behavioral task
behavioral1
Sample
5fefa719c11c0ad8472f9c610aaa9cd4a487077ed06aca94fe71dd20cd486394.dll
Resource
win7v20210408
0 signatures
0 seconds
General
- Target 5fefa719c11c0ad8472f9c610aaa9cd4a487077ed06aca94fe71dd20cd486394.dll
- Size 2.5MB
- Sample210921-kdk63abebr
- SHA256 5fefa719c11c0ad8472f9c610aaa9cd4a487077ed06aca94fe71dd20cd486394
- MD5 f41820d6fd8a84f7a732481e5e9ce259
- SHA1 2336cab8c4b712fb61df1f29e37a04a6ebc97e93
- SHA512 7ebbf4d24f8f636d76e7686ad6f0c2561412fb82f8926aa71f42ded183831ac2b4e711aab1d2a39688d51ed5145b47491ca191d4d4b924b768b5b526895e3699
- MD5 SHA1 SHA512
Malware Config
Signatures
-
resource yara_rule behavioral2/memory/3048-120-0x0000000000440000-0x0000000000441000-memory.dmp dridex_stager_shellcode - Executes dropped EXE 3 IoCs
pid Process 4528 bcastdvr.exe 4472 DmNotificationBroker.exe 4664 mblctr.exe - Loads dropped DLL 4 IoCs
pid Process 4528 bcastdvr.exe 4528 bcastdvr.exe 4472 DmNotificationBroker.exe 4664 mblctr.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wjvmqhmsyzhtvy = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\SystemCertificates\\my\\DmNotificationBroker.exe" Process not Found -
description ioc Process 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 mblctr.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA bcastdvr.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3608 rundll32.exe 3608 rundll32.exe 3608 rundll32.exe 3608 rundll32.exe 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found 3048 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3048 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3048 wrote to memory of 4548 3048 Process not Found 70 PID 3048 wrote to memory of 4548 3048 Process not Found 70 PID 3048 wrote to memory of 4528 3048 Process not Found 71 PID 3048 wrote to memory of 4528 3048 Process not Found 71 PID 3048 wrote to memory of 4488 3048 Process not Found 72 PID 3048 wrote to memory of 4488 3048 Process not Found 72 PID 3048 wrote to memory of 4472 3048 Process not Found 73 PID 3048 wrote to memory of 4472 3048 Process not Found 73 PID 3048 wrote to memory of 2284 3048 Process not Found 74 PID 3048 wrote to memory of 2284 3048 Process not Found 74 PID 3048 wrote to memory of 4664 3048 Process not Found 75 PID 3048 wrote to memory of 4664 3048 Process not Found 75
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5fefa719c11c0ad8472f9c610aaa9cd4a487077ed06aca94fe71dd20cd486394.dll,#11⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:3608
-
C:\Windows\system32\bcastdvr.exeC:\Windows\system32\bcastdvr.exe1⤵PID:4548
-
C:\Users\Admin\AppData\Local\RUyppG\bcastdvr.exeC:\Users\Admin\AppData\Local\RUyppG\bcastdvr.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4528
-
C:\Windows\system32\DmNotificationBroker.exeC:\Windows\system32\DmNotificationBroker.exe1⤵PID:4488
-
C:\Users\Admin\AppData\Local\mgB\DmNotificationBroker.exeC:\Users\Admin\AppData\Local\mgB\DmNotificationBroker.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4472
-
C:\Windows\system32\mblctr.exeC:\Windows\system32\mblctr.exe1⤵PID:2284
-
C:\Users\Admin\AppData\Local\INRd1\mblctr.exeC:\Users\Admin\AppData\Local\INRd1\mblctr.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4664