Analysis
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max time kernel
150s -
max time network
151s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
04-03-2021 13:06
Static task
static1
Behavioral task
behavioral1
Sample
5fb68877506a269b7da96f336a56cc67e2324421cbf14cb92c747f1e0a03b863.dll
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
General
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Target
5fb68877506a269b7da96f336a56cc67e2324421cbf14cb92c747f1e0a03b863.dll
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Size
196KB
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MD5
5aaf467c124b6b954e15f0aa0e35672b
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SHA1
806ea9ecdcf5893b3f32c16514c56dd8888f7e17
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SHA256
5fb68877506a269b7da96f336a56cc67e2324421cbf14cb92c747f1e0a03b863
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SHA512
fb0f8e2941970ba0f4ec4c3dfa3841bad655519b3265e3524b54463e83f744c7adfbf3a89d782d95292dbfddb711400fe0ff63bb896c7f64899c3bfd7568a757
Malware Config
Extracted
Family
dridex
Botnet
111
C2
37.247.35.132:443
50.243.30.51:6601
162.241.204.234:6516
rc4.plain
rc4.plain
Signatures
-
Processes:
resource yara_rule behavioral1/memory/1364-4-0x00000000747C0000-0x00000000747F3000-memory.dmp dridex_ldr behavioral1/memory/1364-6-0x00000000747C0000-0x00000000747DF000-memory.dmp dridex_ldr -
Blocklisted process makes network request 4 IoCs
Processes:
rundll32.exeflow pid process 6 1364 rundll32.exe 8 1364 rundll32.exe 9 1364 rundll32.exe 11 1364 rundll32.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Processes:
rundll32.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
rundll32.exedescription pid process target process PID 1968 wrote to memory of 1364 1968 rundll32.exe rundll32.exe PID 1968 wrote to memory of 1364 1968 rundll32.exe rundll32.exe PID 1968 wrote to memory of 1364 1968 rundll32.exe rundll32.exe PID 1968 wrote to memory of 1364 1968 rundll32.exe rundll32.exe PID 1968 wrote to memory of 1364 1968 rundll32.exe rundll32.exe PID 1968 wrote to memory of 1364 1968 rundll32.exe rundll32.exe PID 1968 wrote to memory of 1364 1968 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5fb68877506a269b7da96f336a56cc67e2324421cbf14cb92c747f1e0a03b863.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5fb68877506a269b7da96f336a56cc67e2324421cbf14cb92c747f1e0a03b863.dll,#12⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/916-7-0x000007FEF7180000-0x000007FEF73FA000-memory.dmpFilesize
2.5MB
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memory/1364-2-0x0000000000000000-mapping.dmp
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memory/1364-3-0x0000000075ED1000-0x0000000075ED3000-memory.dmpFilesize
8KB
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memory/1364-4-0x00000000747C0000-0x00000000747F3000-memory.dmpFilesize
204KB
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memory/1364-5-0x0000000000220000-0x0000000000226000-memory.dmpFilesize
24KB
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memory/1364-6-0x00000000747C0000-0x00000000747DF000-memory.dmpFilesize
124KB