Analysis
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max time kernel
58s -
max time network
60s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
04-03-2021 07:04
Static task
static1
General
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Target
ef2f56a3315360c36595dde8c121e8c3fbcdab622c9015a14499b2dc1ac7883f.dll
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Size
196KB
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MD5
f6d71e20487a04c6acf29f3545d961f7
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SHA1
78887a52413e5922015d8557352df5a8117d8f3e
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SHA256
ef2f56a3315360c36595dde8c121e8c3fbcdab622c9015a14499b2dc1ac7883f
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SHA512
30845888fd6ff7d713ca70b134d0289546e4d4c639eab10d05e45d99a292ac58c91f8c6bffd7c3468fcd5ce8138250062388aad0a0b8ae52565833b54f67ffb6
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
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Processes:
resource yara_rule behavioral1/memory/1988-4-0x0000000074AD0000-0x0000000074B03000-memory.dmp dridex_ldr behavioral1/memory/1988-6-0x0000000074AD0000-0x0000000074AEF000-memory.dmp dridex_ldr -
Blocklisted process makes network request 2 IoCs
Processes:
rundll32.exeflow pid process 6 1988 rundll32.exe 8 1988 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 1108 wrote to memory of 1988 1108 rundll32.exe rundll32.exe PID 1108 wrote to memory of 1988 1108 rundll32.exe rundll32.exe PID 1108 wrote to memory of 1988 1108 rundll32.exe rundll32.exe PID 1108 wrote to memory of 1988 1108 rundll32.exe rundll32.exe PID 1108 wrote to memory of 1988 1108 rundll32.exe rundll32.exe PID 1108 wrote to memory of 1988 1108 rundll32.exe rundll32.exe PID 1108 wrote to memory of 1988 1108 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\ef2f56a3315360c36595dde8c121e8c3fbcdab622c9015a14499b2dc1ac7883f.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\ef2f56a3315360c36595dde8c121e8c3fbcdab622c9015a14499b2dc1ac7883f.dll,#12⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1528-7-0x000007FEF7510000-0x000007FEF778A000-memory.dmpFilesize
2.5MB
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memory/1988-2-0x0000000000000000-mapping.dmp
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memory/1988-3-0x00000000760D1000-0x00000000760D3000-memory.dmpFilesize
8KB
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memory/1988-4-0x0000000074AD0000-0x0000000074B03000-memory.dmpFilesize
204KB
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memory/1988-5-0x00000000001C0000-0x00000000001C6000-memory.dmpFilesize
24KB
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memory/1988-6-0x0000000074AD0000-0x0000000074AEF000-memory.dmpFilesize
124KB