Analysis
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max time kernel
119s -
max time network
122s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
24-12-2021 01:12
Static task
static1
Behavioral task
behavioral1
Sample
bfnigger.bin.dll
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
General
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Target
bfnigger.bin.dll
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Size
552KB
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MD5
63c22ce32346e029fa5a1ec1ae619d0f
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SHA1
222cf86c3b59f466292bb734be308cda77c3ddff
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SHA256
efbd76616dc1cd8210a8c54611f4ffa88e635f0f6ded2f8ff48311737635edda
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SHA512
413efdf48b13d8cd6cb9f799215a7c34588995ba5f48c4db855ad332c3b4b6b7c753ff361d0cd850a728ec68c76b47e96aaac604f3bdb069920d930c422bd0f4
Malware Config
Extracted
Family
dridex
Botnet
22201
C2
144.91.122.102:443
85.10.248.28:593
185.4.135.27:5228
80.211.3.13:8116
rc4.plain
rc4.plain
Signatures
-
Processes:
resource yara_rule behavioral1/memory/1592-56-0x0000000074BF0000-0x0000000074C7C000-memory.dmp dridex_ldr -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1452 1592 WerFault.exe rundll32.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
WerFault.exepid process 1452 WerFault.exe 1452 WerFault.exe 1452 WerFault.exe 1452 WerFault.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
WerFault.exepid process 1452 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
WerFault.exedescription pid process Token: SeDebugPrivilege 1452 WerFault.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 944 wrote to memory of 1592 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1592 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1592 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1592 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1592 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1592 944 rundll32.exe rundll32.exe PID 944 wrote to memory of 1592 944 rundll32.exe rundll32.exe PID 1592 wrote to memory of 1452 1592 rundll32.exe WerFault.exe PID 1592 wrote to memory of 1452 1592 rundll32.exe WerFault.exe PID 1592 wrote to memory of 1452 1592 rundll32.exe WerFault.exe PID 1592 wrote to memory of 1452 1592 rundll32.exe WerFault.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\bfnigger.bin.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\bfnigger.bin.dll,#12⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1592 -s 2243⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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memory/1452-59-0x0000000000000000-mapping.dmp
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memory/1452-61-0x0000000000370000-0x0000000000371000-memory.dmpFilesize
4KB
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memory/1592-54-0x0000000000000000-mapping.dmp
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memory/1592-55-0x0000000076151000-0x0000000076153000-memory.dmpFilesize
8KB
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memory/1592-56-0x0000000074BF0000-0x0000000074C7C000-memory.dmpFilesize
560KB
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memory/1592-58-0x0000000000160000-0x0000000000166000-memory.dmpFilesize
24KB