b42333c1d370a88acc55c0c583aef1ac5992f59b603795f9e521472bd87f0472

Analysis

max time kernel
38s
max time network
45s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2023, 07:40

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General

Target

WeChatBackup.exe
Size

4.6MB
MD5

e8deca5ced98aa0eaf15a9d5e9d7b3bc
SHA1

289de6a64fac58f9fb1b65fdb7ecf63017f541de
SHA256

b42333c1d370a88acc55c0c583aef1ac5992f59b603795f9e521472bd87f0472
SHA512

0cdc582ce5e018304d740f5132da8b1e43197ebc4ae8b4a91ca2ba5e6cfd7af1c1f08e7d2246992df4081cb9f9ed289494900a3ce072e845ab565de39651f137
SSDEEP

98304:YF7kHd+VwnB0fgDPwQNY842E1AqrKHUzJbE6UE4LqCkFn+hATOGa67yJAsLhLIDi:/HkCnB0fgDPw+5JBqrKHUzJblg2Fnknr

Score

7^/10

Malware Config

Signatures

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-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	WeChatBackup.exe

Executes dropped EXE 1 IoCs

pid	Process
1056	WeChatBackup.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1056	WeChatBackup.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1056	WeChatBackup.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2964 wrote to memory of 1056	2964	WeChatBackup.exe	84
PID 2964 wrote to memory of 1056	2964	WeChatBackup.exe	84

C:\Users\Admin\AppData\Local\Temp\WeChatBackup.exe
"C:\Users\Admin\AppData\Local\Temp\WeChatBackup.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\WeChatBackup.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\WeChatBackup.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1056

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RarSFX0\WeChatBackup.exe

Filesize
7.5MB

MD5
40bde68cd404997c48e6b56eca91b9ec

SHA1
45dd624fbca1cf14891e6dd692e69f0259e37ba8

SHA256
8c7a4b16040e10ec153419387b79fa65eaa4e394c0eb4b1cecca6350fc520f66

SHA512
85fde413d760e57d2a386dc6ab2e877f61ace633359f3c4b57c18afc1f7cc4bfa572e4da558f9465cf5db005875f043804fdca3649cfad75cd7f46e324ace7bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\WeChatBackup.exe

Filesize
7.5MB

MD5
40bde68cd404997c48e6b56eca91b9ec

SHA1
45dd624fbca1cf14891e6dd692e69f0259e37ba8

SHA256
8c7a4b16040e10ec153419387b79fa65eaa4e394c0eb4b1cecca6350fc520f66

SHA512
85fde413d760e57d2a386dc6ab2e877f61ace633359f3c4b57c18afc1f7cc4bfa572e4da558f9465cf5db005875f043804fdca3649cfad75cd7f46e324ace7bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\WeChatBackup.exe

Filesize
7.5MB

MD5
40bde68cd404997c48e6b56eca91b9ec

SHA1
45dd624fbca1cf14891e6dd692e69f0259e37ba8

SHA256
8c7a4b16040e10ec153419387b79fa65eaa4e394c0eb4b1cecca6350fc520f66

SHA512
85fde413d760e57d2a386dc6ab2e877f61ace633359f3c4b57c18afc1f7cc4bfa572e4da558f9465cf5db005875f043804fdca3649cfad75cd7f46e324ace7bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\WeChatBackup.exe.config

Filesize
189B

MD5
9dbad5517b46f41dbb0d8780b20ab87e

SHA1
ef6aef0b1ea5d01b6e088a8bf2f429773c04ba5e

SHA256
47e5a0f101af4151d7f13d2d6bfa9b847d5b5e4a98d1f4674b7c015772746cdf

SHA512
43825f5c26c54e1fc5bffcce30caad1449a28c0c9a9432e9ce17d255f8bf6057c1a1002d9471e5b654ab1de08fb6eabf96302cdb3e0fb4b63ba0ff186e903be8

Download Submit
memory/1056-198-0x0000020B86E30000-0x0000020B875B4000-memory.dmp

Filesize
7.5MB

Download
memory/1056-199-0x0000020BA3850000-0x0000020BA3860000-memory.dmp

Filesize
64KB

Download
memory/1056-200-0x0000020BA3850000-0x0000020BA3860000-memory.dmp

Filesize
64KB

Download
memory/1056-202-0x0000020BA3850000-0x0000020BA3860000-memory.dmp

Filesize
64KB

Download