91a8d66f5c1f651e0f60c456fa8dd06347f69be8ba5542f9c6781e6714962fa9 | Triage

Analysis

max time kernel
10s
max time network
138s
platform
windows10_x64
resource
win10v20210408
submitted
30-07-2021 09:06

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General

Target

msvcr100.dll
Size

755KB
MD5

bf38660a9125935658cfa3e53fdc7d65
SHA1

0b51fb415ec89848f339f8989d323bea722bfd70
SHA256

60c06e0fa4449314da3a0a87c1a9d9577df99226f943637e06f61188e5862efa
SHA512

25f521ffe25a950d0f1a4de63b04cb62e2a3b0e72e7405799586913208bf8f8fa52aa34e96a9cc6ee47afcd41870f3aa0cd8289c53461d1b6e792d19b750c9a1

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1248 3996 WerFault.exe rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

WerFault.exe

pid	process
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 1248 WerFault.exe
Token: SeBackupPrivilege 1248 WerFault.exe
Token: SeDebugPrivilege 1248 WerFault.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 3128 wrote to memory of 3996	3128	rundll32.exe	rundll32.exe
PID 3128 wrote to memory of 3996	3128	rundll32.exe	rundll32.exe
PID 3128 wrote to memory of 3996	3128	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\msvcr100.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3128

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\msvcr100.dll,#1
2⤵
PID:3996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 620
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1248

MITRE ATT&CK Matrix

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Downloads

memory/3996-114-0x0000000000000000-mapping.dmp

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