Analysis
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max time kernel
120s -
max time network
148s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
20-10-2021 19:50
Static task
static1
Behavioral task
behavioral1
Sample
7_Microsoft.Data.Entity.Build.Tasks.dll
Resource
win7-en-20210920
windows7_x64
0 signatures
0 seconds
General
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Target
7_Microsoft.Data.Entity.Build.Tasks.dll
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Size
180KB
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MD5
aba5b0df02c421887cd5899a1e3ee976
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SHA1
f126397b4e63a9dc647172ee71c737d4271e0522
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SHA256
8256436d8c0184c0566d594aab21931714c71217fbd20b4f53b1c4a58daaedd0
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SHA512
650e5ba28d642a225f605659538a203c694b09bb00f60c68a5b5d9b2db8ba09a25c780edb1da994e994c49baf6e67200fd63b991592a9da62e63cc99300645bc
Malware Config
Extracted
Family
dridex
Botnet
22201
C2
155.138.203.91:443
207.180.220.242:8116
46.101.142.214:6891
rc4.plain
rc4.plain
Signatures
-
Processes:
resource yara_rule behavioral1/memory/1268-55-0x0000000074B10000-0x0000000074B3F000-memory.dmp dridex_ldr -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1872 1268 WerFault.exe rundll32.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
WerFault.exepid process 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
WerFault.exepid process 1872 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
WerFault.exedescription pid process Token: SeDebugPrivilege 1872 WerFault.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2028 wrote to memory of 1268 2028 rundll32.exe rundll32.exe PID 2028 wrote to memory of 1268 2028 rundll32.exe rundll32.exe PID 2028 wrote to memory of 1268 2028 rundll32.exe rundll32.exe PID 2028 wrote to memory of 1268 2028 rundll32.exe rundll32.exe PID 2028 wrote to memory of 1268 2028 rundll32.exe rundll32.exe PID 2028 wrote to memory of 1268 2028 rundll32.exe rundll32.exe PID 2028 wrote to memory of 1268 2028 rundll32.exe rundll32.exe PID 1268 wrote to memory of 1872 1268 rundll32.exe WerFault.exe PID 1268 wrote to memory of 1872 1268 rundll32.exe WerFault.exe PID 1268 wrote to memory of 1872 1268 rundll32.exe WerFault.exe PID 1268 wrote to memory of 1872 1268 rundll32.exe WerFault.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\7_Microsoft.Data.Entity.Build.Tasks.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\7_Microsoft.Data.Entity.Build.Tasks.dll,#12⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 2523⤵
- 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/1268-53-0x0000000000000000-mapping.dmp
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memory/1268-54-0x0000000074F81000-0x0000000074F83000-memory.dmpFilesize
8KB
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memory/1268-55-0x0000000074B10000-0x0000000074B3F000-memory.dmpFilesize
188KB
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memory/1268-57-0x0000000000190000-0x0000000000196000-memory.dmpFilesize
24KB
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memory/1872-58-0x0000000000000000-mapping.dmp
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memory/1872-59-0x0000000000200000-0x0000000000201000-memory.dmpFilesize
4KB