Analysis
- max time kernel
154s - max time network
146s - platform
windows10_x64 - resource
win10-en - submitted
16/09/2021, 08:17
Static task
static1
Behavioral task
behavioral1
Sample
fb42214dc2b428947b6d8a0f25ae62f644f21f239c2d48037eb0c57e7101eef9.dll
Resource
win7v20210408
0 signatures
0 seconds
General
- Target fb42214dc2b428947b6d8a0f25ae62f644f21f239c2d48037eb0c57e7101eef9.dll
- Size 2.7MB
- Sample210916-j6qftafdam
- SHA256 fb42214dc2b428947b6d8a0f25ae62f644f21f239c2d48037eb0c57e7101eef9
- MD5 2801851626d3f3c9c04a9388b5639829
- SHA1 f27fa08c91258fa845f549e374ddadd65b2b0f60
- SHA512 c65bb6511aafdf388cd72ce734c165b67872f1c13f23414bf3500b792f5f2320342b5083ad556d38740f38304113abc3c0f803d3c14cc918a1892938822df426
- MD5 SHA1 SHA512
Malware Config
Signatures
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resource yara_rule behavioral2/memory/3040-120-0x0000000003200000-0x0000000003201000-memory.dmp dridex_stager_shellcode - Executes dropped EXE 3 IoCs
pid Process 3744 RDVGHelper.exe 3724 SppExtComObj.Exe 4160 AtBroker.exe - Loads dropped DLL 3 IoCs
pid Process 3744 RDVGHelper.exe 3724 SppExtComObj.Exe 4160 AtBroker.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\\MICROS~1\\INTERN~1\\QUICKL~1\\USERPI~1\\IMPLIC~1\\R4T\\SPPEXT~1.EXE" Process not Found -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA SppExtComObj.Exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA AtBroker.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 RDVGHelper.exe - Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4652 rundll32.exe 4652 rundll32.exe 4652 rundll32.exe 4652 rundll32.exe 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3040 Process not Found - Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeShutdownPrivilege 3040 Process not Found Token: SeCreatePagefilePrivilege 3040 Process not Found Token: SeShutdownPrivilege 3040 Process not Found Token: SeCreatePagefilePrivilege 3040 Process not Found Token: SeShutdownPrivilege 3040 Process not Found Token: SeCreatePagefilePrivilege 3040 Process not Found Token: SeShutdownPrivilege 3040 Process not Found Token: SeCreatePagefilePrivilege 3040 Process not Found - Suspicious use of FindShellTrayWindow 9 IoCs
pid Process 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found 3040 Process not Found - Suspicious use of SendNotifyMessage 1 IoCs
pid Process 3040 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3040 wrote to memory of 3456 3040 Process not Found 69 PID 3040 wrote to memory of 3456 3040 Process not Found 69 PID 3040 wrote to memory of 3744 3040 Process not Found 70 PID 3040 wrote to memory of 3744 3040 Process not Found 70 PID 3040 wrote to memory of 3288 3040 Process not Found 71 PID 3040 wrote to memory of 3288 3040 Process not Found 71 PID 3040 wrote to memory of 3724 3040 Process not Found 72 PID 3040 wrote to memory of 3724 3040 Process not Found 72 PID 3040 wrote to memory of 4156 3040 Process not Found 73 PID 3040 wrote to memory of 4156 3040 Process not Found 73 PID 3040 wrote to memory of 4160 3040 Process not Found 74 PID 3040 wrote to memory of 4160 3040 Process not Found 74
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\fb42214dc2b428947b6d8a0f25ae62f644f21f239c2d48037eb0c57e7101eef9.dll,#11⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:4652
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C:\Windows\system32\RDVGHelper.exeC:\Windows\system32\RDVGHelper.exe1⤵PID:3456
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C:\Users\Admin\AppData\Local\G5zHsOc\RDVGHelper.exeC:\Users\Admin\AppData\Local\G5zHsOc\RDVGHelper.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:3744
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C:\Windows\system32\SppExtComObj.ExeC:\Windows\system32\SppExtComObj.Exe1⤵PID:3288
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C:\Users\Admin\AppData\Local\BRd32\SppExtComObj.ExeC:\Users\Admin\AppData\Local\BRd32\SppExtComObj.Exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:3724
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C:\Windows\system32\AtBroker.exeC:\Windows\system32\AtBroker.exe1⤵PID:4156
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C:\Users\Admin\AppData\Local\s1EXK0x\AtBroker.exeC:\Users\Admin\AppData\Local\s1EXK0x\AtBroker.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4160