Analysis
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max time kernel
31s -
max time network
90s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
05-03-2021 23:33
Static task
static1
Behavioral task
behavioral1
Sample
3d3f1272e9a4df7b1de123b9ed551860b00f5ace6d449b7f78c98ca5c7027d69.dll
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
General
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Target
3d3f1272e9a4df7b1de123b9ed551860b00f5ace6d449b7f78c98ca5c7027d69.dll
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Size
168KB
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MD5
84b5530f6f18391bcf54d2cdfc39eca4
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SHA1
dfe936981c6d7076238e2ce6ba929a2e24dcbe7a
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SHA256
3d3f1272e9a4df7b1de123b9ed551860b00f5ace6d449b7f78c98ca5c7027d69
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SHA512
2169e3b25886d15d5965c59335b89532bfbbffbe5a3c24f5b917c83c48e3146a5f88e989ce623761c37279921419bf58306b1bbec9d7af190886f5a2d98cc28e
Malware Config
Extracted
Family
dridex
Botnet
111
C2
173.203.78.138:443
217.160.107.189:6601
77.220.64.150:5037
rc4.plain
rc4.plain
Signatures
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Processes:
resource yara_rule behavioral1/memory/1072-4-0x0000000074FC0000-0x0000000074FEC000-memory.dmp dridex_ldr behavioral1/memory/1072-6-0x0000000074FC0000-0x0000000074FDF000-memory.dmp dridex_ldr -
Blocklisted process makes network request 2 IoCs
Processes:
rundll32.exeflow pid process 5 1072 rundll32.exe 7 1072 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 1832 wrote to memory of 1072 1832 rundll32.exe rundll32.exe PID 1832 wrote to memory of 1072 1832 rundll32.exe rundll32.exe PID 1832 wrote to memory of 1072 1832 rundll32.exe rundll32.exe PID 1832 wrote to memory of 1072 1832 rundll32.exe rundll32.exe PID 1832 wrote to memory of 1072 1832 rundll32.exe rundll32.exe PID 1832 wrote to memory of 1072 1832 rundll32.exe rundll32.exe PID 1832 wrote to memory of 1072 1832 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3d3f1272e9a4df7b1de123b9ed551860b00f5ace6d449b7f78c98ca5c7027d69.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3d3f1272e9a4df7b1de123b9ed551860b00f5ace6d449b7f78c98ca5c7027d69.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/1072-2-0x0000000000000000-mapping.dmp
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memory/1072-3-0x0000000076191000-0x0000000076193000-memory.dmpFilesize
8KB
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memory/1072-4-0x0000000074FC0000-0x0000000074FEC000-memory.dmpFilesize
176KB
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memory/1072-5-0x00000000001E0000-0x00000000001E6000-memory.dmpFilesize
24KB
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memory/1072-6-0x0000000074FC0000-0x0000000074FDF000-memory.dmpFilesize
124KB
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memory/1660-7-0x000007FEF7F80000-0x000007FEF81FA000-memory.dmpFilesize
2.5MB