84b5e670ddcfe87304f4b3d45170faeae04600ac71969cb65fa917d2217cec86

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 18:26

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General

Target

2024-05-21_17d9f8d5141d76e4c6e57e05f3cb92ef_cryptolocker.exe
Size

32KB
MD5

17d9f8d5141d76e4c6e57e05f3cb92ef
SHA1

7fe74124b0a86c924a87974df6f24f54506fd321
SHA256

84b5e670ddcfe87304f4b3d45170faeae04600ac71969cb65fa917d2217cec86
SHA512

cb7ddde9fc5078ddde7787b3a8919ce9c1544d43126a3aa1255b4f759732a31cea757397c8eabb47fe26d86b3e2200e80327c27ef7026f242c93bbe20a8f07ad
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvxu:bG74zYcgT/Ekd0ryfjk0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1288-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b00000002340e-13.dat	CryptoLocker_rule2
behavioral2/memory/4884-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1288-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4884-27-0x0000000008000000-0x000000000800A000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-21_17d9f8d5141d76e4c6e57e05f3cb92ef_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4884	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 1288 wrote to memory of 4884	1288	2024-05-21_17d9f8d5141d76e4c6e57e05f3cb92ef_cryptolocker.exe	83
PID 1288 wrote to memory of 4884	1288	2024-05-21_17d9f8d5141d76e4c6e57e05f3cb92ef_cryptolocker.exe	83
PID 1288 wrote to memory of 4884	1288	2024-05-21_17d9f8d5141d76e4c6e57e05f3cb92ef_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-21_17d9f8d5141d76e4c6e57e05f3cb92ef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_17d9f8d5141d76e4c6e57e05f3cb92ef_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4884

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
33KB

MD5
914a6d8e1ba52237677336f4593bffdc

SHA1
bb14f9f449c538545451818d46f24d240864eeff

SHA256
5388d05846069339335cf8f38465d1f5226736727e3f3bde4aba3160e530d819

SHA512
395ad2fd4f181b6db35eea45b1b89036e0bbd1caca624300c161da472a071e8c535c6547f6d30ca1ae24866710b58ae57489db5f84a4d346027e13379b408d85

Download Submit
memory/1288-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1288-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1288-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/1288-9-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1288-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4884-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4884-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4884-26-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4884-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download