Analysis
- max time kernel
151s - max time network
120s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
29/09/2021, 07:38
Static task
static1
Behavioral task
behavioral1
Sample
dc04225d29393bc9ba12e513b25172c130e6bebeba91783024188be85ae08de8.dll
Resource
win7-en-20210920
0 signatures
0 seconds
General
- Target dc04225d29393bc9ba12e513b25172c130e6bebeba91783024188be85ae08de8.dll
- Size 1.8MB
- Sample210929-jgdeysecbn
- SHA256 dc04225d29393bc9ba12e513b25172c130e6bebeba91783024188be85ae08de8
- MD5 1d233e3a125ef5743ccae94be318ea6e
- SHA1 9a20db40fb56234719ba7d142253ca3c87b835a2
- SHA512 884de53bc3438ae932c312f5b0a705db2338474a7574d9b7235f3f438f9d7f2067022ae9964dfd2d251531aca5e3b885a600749201a34f04a2ac58885e62f2f3
- MD5 SHA1 SHA512
Malware Config
Signatures
-
resource yara_rule behavioral2/memory/2648-120-0x0000000000B80000-0x0000000000B81000-memory.dmp dridex_stager_shellcode - Executes dropped EXE 3 IoCs
pid Process 1096 MDMAppInstaller.exe 3564 wusa.exe 2160 msra.exe - Loads dropped DLL 3 IoCs
pid Process 1096 MDMAppInstaller.exe 3564 wusa.exe 2160 msra.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\\Windows\\SendTo\\86EF2t\\wusa.exe" Process not Found -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA MDMAppInstaller.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA wusa.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA msra.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.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-1-5-21-2481030822-2828258191-1606198294-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2124 rundll32.exe 2124 rundll32.exe 2124 rundll32.exe 2124 rundll32.exe 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found 2648 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2648 Process not Found - Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeShutdownPrivilege 2648 Process not Found Token: SeCreatePagefilePrivilege 2648 Process not Found Token: SeShutdownPrivilege 2648 Process not Found Token: SeCreatePagefilePrivilege 2648 Process not Found Token: SeShutdownPrivilege 2648 Process not Found Token: SeCreatePagefilePrivilege 2648 Process not Found Token: SeShutdownPrivilege 2648 Process not Found Token: SeCreatePagefilePrivilege 2648 Process not Found Token: SeShutdownPrivilege 2648 Process not Found Token: SeCreatePagefilePrivilege 2648 Process not Found Token: SeShutdownPrivilege 2648 Process not Found Token: SeCreatePagefilePrivilege 2648 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2648 wrote to memory of 1036 2648 Process not Found 69 PID 2648 wrote to memory of 1036 2648 Process not Found 69 PID 2648 wrote to memory of 1096 2648 Process not Found 70 PID 2648 wrote to memory of 1096 2648 Process not Found 70 PID 2648 wrote to memory of 2412 2648 Process not Found 71 PID 2648 wrote to memory of 2412 2648 Process not Found 71 PID 2648 wrote to memory of 3564 2648 Process not Found 72 PID 2648 wrote to memory of 3564 2648 Process not Found 72 PID 2648 wrote to memory of 3792 2648 Process not Found 73 PID 2648 wrote to memory of 3792 2648 Process not Found 73 PID 2648 wrote to memory of 2160 2648 Process not Found 74 PID 2648 wrote to memory of 2160 2648 Process not Found 74
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\dc04225d29393bc9ba12e513b25172c130e6bebeba91783024188be85ae08de8.dll,#11⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:2124
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C:\Windows\system32\MDMAppInstaller.exeC:\Windows\system32\MDMAppInstaller.exe1⤵PID:1036
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C:\Users\Admin\AppData\Local\vJ13SCXh\MDMAppInstaller.exeC:\Users\Admin\AppData\Local\vJ13SCXh\MDMAppInstaller.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:1096
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C:\Windows\system32\wusa.exeC:\Windows\system32\wusa.exe1⤵PID:2412
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C:\Users\Admin\AppData\Local\wC6JfST\wusa.exeC:\Users\Admin\AppData\Local\wC6JfST\wusa.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:3564
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C:\Windows\system32\msra.exeC:\Windows\system32\msra.exe1⤵PID:3792
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C:\Users\Admin\AppData\Local\j5vE68Cf\msra.exeC:\Users\Admin\AppData\Local\j5vE68Cf\msra.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2160