871446ecce0e0186a2707c23072695359d288f975f7f9ec00e90c55d88386a10

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25-05-2024 03:58

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General

Target

2024-05-25_868b71dbdde7f7972bbf310f02496703_cryptolocker.exe
Size

31KB
MD5

868b71dbdde7f7972bbf310f02496703
SHA1

3ba1d4f60132d8f2934240e6aabcfba02b3ae80d
SHA256

871446ecce0e0186a2707c23072695359d288f975f7f9ec00e90c55d88386a10
SHA512

0d346b841206b62c0a57838971f53d1070a51136187cb811352d34bab213f4bdcd9fa77b3eb020b1d9d67b313d1f1d8ac883ef6b88d88195fe13f1c201a8a40b
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTjYr:bG74zYcgT/Ekd0ryfjfYr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4256-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a0000000233c0-12.dat	CryptoLocker_rule2
behavioral2/memory/392-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4256-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/392-27-0x0000000008000000-0x000000000800A000-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	2024-05-25_868b71dbdde7f7972bbf310f02496703_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
392	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 4256 wrote to memory of 392	4256	2024-05-25_868b71dbdde7f7972bbf310f02496703_cryptolocker.exe	83
PID 4256 wrote to memory of 392	4256	2024-05-25_868b71dbdde7f7972bbf310f02496703_cryptolocker.exe	83
PID 4256 wrote to memory of 392	4256	2024-05-25_868b71dbdde7f7972bbf310f02496703_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-25_868b71dbdde7f7972bbf310f02496703_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_868b71dbdde7f7972bbf310f02496703_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4256
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:392

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
31KB

MD5
bf83a6739eca779926499ebb5701e87f

SHA1
2c64813e2aa2638e4fe3c0c535d7bac3867b1c26

SHA256
da0cc0c6f23f84a0ecbe1b1115cde4474a4eb75992f0996a129a212d20a2aab3

SHA512
150b3578adb363ce10669e86016a40a469a176d6d042ce6a9d77a5d15643dec649928c9f10c80de90dda9470263bb7078f628565b779ef5213a653e9e6f01bd2

Download Submit
memory/392-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/392-26-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/392-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4256-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4256-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4256-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4256-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4256-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download