75a195a9f17f5a094c4c0755a6b800c18fcb6d53bd23592b3d917fb3c5fb115a

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
07-06-2024 13:41

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General

Target

2024-06-07_51ff5924d4d4f280b7c84f9271c0282b_cryptolocker.exe
Size

43KB
MD5

51ff5924d4d4f280b7c84f9271c0282b
SHA1

517e8b91972447bca07c1531d115dac4ed4f0759
SHA256

75a195a9f17f5a094c4c0755a6b800c18fcb6d53bd23592b3d917fb3c5fb115a
SHA512

66640023721f70365be72bbfaf27dc192b60cf3511dc830eb6d31a6e007a4e80ad4a62589a4c37950b6c8b2bf6e14f71253cb5b369414acbba38fb454661008a
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUkrS:bm74zYcgT/EkM0ryfjdW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1604-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000233c0-13.dat	CryptoLocker_rule2
behavioral2/memory/4644-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1604-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4644-27-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-06-07_51ff5924d4d4f280b7c84f9271c0282b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4644	hasfj.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 4644	1604	2024-06-07_51ff5924d4d4f280b7c84f9271c0282b_cryptolocker.exe	82
PID 1604 wrote to memory of 4644	1604	2024-06-07_51ff5924d4d4f280b7c84f9271c0282b_cryptolocker.exe	82
PID 1604 wrote to memory of 4644	1604	2024-06-07_51ff5924d4d4f280b7c84f9271c0282b_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-07_51ff5924d4d4f280b7c84f9271c0282b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-07_51ff5924d4d4f280b7c84f9271c0282b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4644

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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\hasfj.exe

Filesize
44KB

MD5
d750140e5e03d05db3d943e6eb53315d

SHA1
e2ba83d8d1e1c9e454b5e573c06cac7561344251

SHA256
da174ff6d73ccfe8a463524547fc536067351d9f3f91ecfa05878004f716a3ec

SHA512
bd03b8d99734a90798623a6dcb4f23033df44fb3ba9767eee4f5c614c42bbb577cf817572a35fb900c844804d1fcf195f2c14c8ad883adaf402b179d6dccf76d

Download Submit
memory/1604-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1604-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1604-9-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1604-2-0x00000000023C0000-0x00000000023C6000-memory.dmp

Filesize
24KB

Download
memory/1604-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4644-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4644-26-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4644-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4644-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download