71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877

Analysis

max time kernel
145s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/11/2022, 03:06

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General

Target

71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe
Size

2.9MB
MD5

ea9907d0308098c06897412307dc115e
SHA1

89b1ab33286e461d8878ad2381a47fb3d612579a
SHA256

71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877
SHA512

1c0f63b0d9a4607cec12d32ddf82484ff07da27e17ef40afe498a0880e500d77d74b58036f42db740a8ca76bc10d6c53ef806d39209b5cfbf5c905234ba3ff0d
SSDEEP

49152:EGM4GOrnHwDQSkRfYNjX5+nCi1a67GV+d4L28hUZzqmZxPHvLm48fXq7N4:RDGnkRWN+Ci067DeL2iUZz9ZdvyjfXMW

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1544	71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{534BEB7D-4386-47EF-8ADE-FEA51EFA08DF}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{98B78678-FA22-4FB9-B6BE-0237032ECA9E}.catalogItem	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1900	1544	WerFault.exe	74
4644	1544	WerFault.exe	74

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1544	71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe
1544	71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe
1544	71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe
1544	71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 1900	1544	71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe	83
PID 1544 wrote to memory of 1900	1544	71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe	83
PID 1544 wrote to memory of 1900	1544	71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe	83

C:\Users\Admin\AppData\Local\Temp\71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe
"C:\Users\Admin\AppData\Local\Temp\71f14953764dc352252bb0a19c5861b6262292ea85e1bd2a516b9737bcdf9877.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 1060
  2⤵
  - Program crash
  PID:1900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 1060
  2⤵
  - Program crash
  PID:4644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1544 -ip 1544
1⤵
PID:1728

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4916

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\112723191329\LZMA.dll

Filesize
67KB

MD5
d0f2416807f04c559e6394a0a4c7f1d1

SHA1
7df43ffa3716156d282b1e37d12dd1122f0a762c

SHA256
0fe6a869cf220769a058f8d281f272ef72669e3587673e52b53f3f9650dcf1fc

SHA512
8199c967ad813216f2ef3094a7614c9ccc95d35a817fc685cb7823f36cc97f0279bddd0ec0bb8f07ee2445476aaea35548516841ee9cde53a8be395515457799

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads