f5285c4f5e7ecc5747e9d17c4a344fc2af3e972d880d1912605e2b6b5adebef3

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 01:04

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General

Target

2024-02-14_ea453ce16634cc89852b0e38f5422af4_cryptolocker.exe
Size

44KB
MD5

ea453ce16634cc89852b0e38f5422af4
SHA1

632221f459281aea4f4e750b544bff7edc3eea03
SHA256

f5285c4f5e7ecc5747e9d17c4a344fc2af3e972d880d1912605e2b6b5adebef3
SHA512

2b3c2681e580473972d97130e257e1acd9e6e2895e1af443359a376ae8d03902898a0097124a5f15e51074601089223a7467439f05e315a525c14458ecb67633
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+YUS55:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+s

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/836-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023224-13.dat	CryptoLocker_rule2
behavioral2/memory/836-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/836-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023224-13.dat	CryptoLocker_set1
behavioral2/memory/836-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-14_ea453ce16634cc89852b0e38f5422af4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3640	asih.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 836 wrote to memory of 3640	836	2024-02-14_ea453ce16634cc89852b0e38f5422af4_cryptolocker.exe	85
PID 836 wrote to memory of 3640	836	2024-02-14_ea453ce16634cc89852b0e38f5422af4_cryptolocker.exe	85
PID 836 wrote to memory of 3640	836	2024-02-14_ea453ce16634cc89852b0e38f5422af4_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-14_ea453ce16634cc89852b0e38f5422af4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_ea453ce16634cc89852b0e38f5422af4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:836
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3640

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\asih.exe

Filesize
44KB

MD5
0eb75a846218c88747633f6476aa3dd1

SHA1
b98c68476a9e3aa3f7e7500bc8809e793f95a8a3

SHA256
bfb6a7c7f6b9787f7cd832a4f7f195c483dbe82b54b521d2fa7c921566148593

SHA512
fd8d418696ec88f0a2dcd29ca7d8d839faa8d0f649918bd9fdc0cc2a7ab03c6d90e59893c128da9ad502ef80f06c783e5327fac1e3fde4fa57a9963d35ba7023

Download Submit
memory/836-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/836-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/836-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/836-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/836-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3640-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3640-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download