Analysis
-
max time kernel
68s -
max time network
136s -
platform
windows10_x64 -
resource
win10-en-20210920 -
submitted
20-10-2021 19:47
Static task
static1
Behavioral task
behavioral1
Sample
8_clr.dll
Resource
win7-en-20210920
windows7_x64
0 signatures
0 seconds
General
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Target
8_clr.dll
-
Size
180KB
-
MD5
f66cbe92d85e332d274af0219340e137
-
SHA1
f9a8197d2df29347c011bbe425e059bd2aa398e5
-
SHA256
15e08697b366cab5dbfffde7116ac38f6771d6c7f7eb430df9bf621694817e38
-
SHA512
996075b69f27045f610f08c7da2e1a0a3cd875bf09a4ed31dd5143a0d4544f6de99e1dc74da6192517c91cd9a01f2272ead60c5eb2c2dea76e443f62a8eed8f4
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 behavioral2/memory/3116-116-0x00000000740E0000-0x000000007410F000-memory.dmp dridex_ldr -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 3064 3116 WerFault.exe rundll32.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
Processes:
WerFault.exepid process 3064 WerFault.exe 3064 WerFault.exe 3064 WerFault.exe 3064 WerFault.exe 3064 WerFault.exe 3064 WerFault.exe 3064 WerFault.exe 3064 WerFault.exe 3064 WerFault.exe 3064 WerFault.exe 3064 WerFault.exe 3064 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
WerFault.exedescription pid process Token: SeRestorePrivilege 3064 WerFault.exe Token: SeBackupPrivilege 3064 WerFault.exe Token: SeDebugPrivilege 3064 WerFault.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
rundll32.exedescription pid process target process PID 2072 wrote to memory of 3116 2072 rundll32.exe rundll32.exe PID 2072 wrote to memory of 3116 2072 rundll32.exe rundll32.exe PID 2072 wrote to memory of 3116 2072 rundll32.exe rundll32.exe
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\8_clr.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\8_clr.dll,#12⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3116 -s 6203⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken