640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f

Analysis

max time kernel
248s
max time network
331s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
28/11/2022, 00:25

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General

Target

640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe
Size

440KB
MD5

9d699c441d4bef45026dbd41dc8708a6
SHA1

e8eaaedb8893141933f1a5fbb408f6540481b903
SHA256

640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f
SHA512

e039fd15e6d91695cc4725d9c0dcb6acfd8d5175ec06cbab2924dbae5a411152f09a4e52404aa06d34b2cacdcc9d4c701915b7571e4e83990100b13fd54b7671
SSDEEP

12288:0LI97N4NY6YfXLcVEdpxeHwAiRzCMm/Sn:0LI97N4NY6eBpxeQAiQMm

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
5048	sys32.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.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 WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1260 wrote to memory of 5048	1260	640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe	88
PID 1260 wrote to memory of 5048	1260	640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe	88

C:\Users\Admin\AppData\Local\Temp\640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe
"C:\Users\Admin\AppData\Local\Temp\640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1260
- C:\Users\Admin\AppData\Local\Temp\sys32.exe
  "C:\Users\Admin\AppData\Local\Temp\sys32.exe"
  2⤵
  - Executes dropped EXE
  PID:5048

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\sys32.exe

Filesize
440KB

MD5
9d699c441d4bef45026dbd41dc8708a6

SHA1
e8eaaedb8893141933f1a5fbb408f6540481b903

SHA256
640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f

SHA512
e039fd15e6d91695cc4725d9c0dcb6acfd8d5175ec06cbab2924dbae5a411152f09a4e52404aa06d34b2cacdcc9d4c701915b7571e4e83990100b13fd54b7671

Download Submit
C:\Users\Admin\AppData\Local\Temp\sys32.exe

Filesize
440KB

MD5
9d699c441d4bef45026dbd41dc8708a6

SHA1
e8eaaedb8893141933f1a5fbb408f6540481b903

SHA256
640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f

SHA512
e039fd15e6d91695cc4725d9c0dcb6acfd8d5175ec06cbab2924dbae5a411152f09a4e52404aa06d34b2cacdcc9d4c701915b7571e4e83990100b13fd54b7671

Download Submit
memory/1260-132-0x00007FF86FB20000-0x00007FF870556000-memory.dmp

Filesize
10.2MB

Download
memory/5048-136-0x00007FF86FB20000-0x00007FF870556000-memory.dmp

Filesize
10.2MB

Download