Analysis
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max time kernel
150s -
max time network
151s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
04-03-2021 18:24
Static task
static1
Behavioral task
behavioral1
Sample
3d835529c2436b903f6b14c640f3eae74eedcfe8e7a51641a9184fce4e470a0c.dll
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
General
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Target
3d835529c2436b903f6b14c640f3eae74eedcfe8e7a51641a9184fce4e470a0c.dll
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Size
196KB
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MD5
a20ebf180e8ba3d3901f7348899ea2bc
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SHA1
412782d6fe2c87e48a0712031c2915066ab03b3d
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SHA256
3d835529c2436b903f6b14c640f3eae74eedcfe8e7a51641a9184fce4e470a0c
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SHA512
d9d13cd077b27ed53113509f3b555ad40e9f1b6eae0d014c58e515aa645aaba99e28ee96b884aee66333918c353da1e0e05d0f1b6f4485bd2f3f1e7c4d09c6d4
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/2028-4-0x0000000074A10000-0x0000000074A43000-memory.dmp dridex_ldr behavioral1/memory/2028-6-0x0000000074A10000-0x0000000074A2F000-memory.dmp dridex_ldr -
Blocklisted process makes network request 2 IoCs
Processes:
rundll32.exeflow pid process 6 2028 rundll32.exe 8 2028 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 1596 wrote to memory of 2028 1596 rundll32.exe rundll32.exe PID 1596 wrote to memory of 2028 1596 rundll32.exe rundll32.exe PID 1596 wrote to memory of 2028 1596 rundll32.exe rundll32.exe PID 1596 wrote to memory of 2028 1596 rundll32.exe rundll32.exe PID 1596 wrote to memory of 2028 1596 rundll32.exe rundll32.exe PID 1596 wrote to memory of 2028 1596 rundll32.exe rundll32.exe PID 1596 wrote to memory of 2028 1596 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3d835529c2436b903f6b14c640f3eae74eedcfe8e7a51641a9184fce4e470a0c.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3d835529c2436b903f6b14c640f3eae74eedcfe8e7a51641a9184fce4e470a0c.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/1440-7-0x000007FEF7540000-0x000007FEF77BA000-memory.dmpFilesize
2.5MB
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memory/2028-2-0x0000000000000000-mapping.dmp
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memory/2028-3-0x0000000075781000-0x0000000075783000-memory.dmpFilesize
8KB
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memory/2028-4-0x0000000074A10000-0x0000000074A43000-memory.dmpFilesize
204KB
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memory/2028-5-0x0000000000120000-0x0000000000126000-memory.dmpFilesize
24KB
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memory/2028-6-0x0000000074A10000-0x0000000074A2F000-memory.dmpFilesize
124KB