4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647

Analysis

max time kernel
157s
max time network
182s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19-10-2022 15:24

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General

Target

4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647.exe
Size

34KB
MD5

a1005182dbe7c802d9e2e5f36d540993
SHA1

887216fe51cdaa6d2d2eb4dd7b4081040d07a01b
SHA256

4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647
SHA512

49b3547f8e12c2e355fcc26ff13e4d21b28471df842b24c7b50a8aa76438fca1d63faf3d01364433cefee04335d56f3d57e978e7b870333f1995238d8d4a7d8c
SSDEEP

768:krqffKB8iVA+cH/vVdeBRs7pMttHuR79:NCBUftdLpMj8B

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1696	WinUpdate.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\system32\\WinUpdate.exe"	WinUpdate.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\WinUpdate.exe	4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647.exe
File opened for modification	C:\Windows\system32\WinUpdate.exe	4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1696	WinUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1696	WinUpdate.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 1696	2556	4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647.exe	82
PID 2556 wrote to memory of 1696	2556	4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647.exe	82

C:\Users\Admin\AppData\Local\Temp\4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647.exe
"C:\Users\Admin\AppData\Local\Temp\4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Windows\system32\WinUpdate.exe
  "C:\Windows\system32\WinUpdate.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1696

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\System32\WinUpdate.exe

Filesize
34KB

MD5
a1005182dbe7c802d9e2e5f36d540993

SHA1
887216fe51cdaa6d2d2eb4dd7b4081040d07a01b

SHA256
4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647

SHA512
49b3547f8e12c2e355fcc26ff13e4d21b28471df842b24c7b50a8aa76438fca1d63faf3d01364433cefee04335d56f3d57e978e7b870333f1995238d8d4a7d8c

Download Submit
C:\Windows\system32\WinUpdate.exe

Filesize
34KB

MD5
a1005182dbe7c802d9e2e5f36d540993

SHA1
887216fe51cdaa6d2d2eb4dd7b4081040d07a01b

SHA256
4504202c054482f24edb97e022266310000b709bbfac370f99d09c440f4fd647

SHA512
49b3547f8e12c2e355fcc26ff13e4d21b28471df842b24c7b50a8aa76438fca1d63faf3d01364433cefee04335d56f3d57e978e7b870333f1995238d8d4a7d8c

Download Submit
memory/1696-136-0x00007FFFDC8F0000-0x00007FFFDD326000-memory.dmp

Filesize
10.2MB

Download
memory/2556-132-0x00007FFFDC8F0000-0x00007FFFDD326000-memory.dmp

Filesize
10.2MB

Download