796ff02de9ee7476b3af3a592e4b9997ba501f81ccc92e583e9fee31b97031cb

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 00:38

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General

Target

2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe
Size

63KB
MD5

a802b8b701ee7600152f4fea0e350a4e
SHA1

fc8bff0d71c0f36692c58b64adea97d58cf20c74
SHA256

796ff02de9ee7476b3af3a592e4b9997ba501f81ccc92e583e9fee31b97031cb
SHA512

853007f6a997cdb366809d9f0922e5d56009c65e62dc01c0237b2b8737134086685521ae1fc41ac79e4618404c6813fb2c300b9c9701be229ef12f21c37c4893
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScGh:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7s

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023416-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023416-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation	2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2212	hurok.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 3228 wrote to memory of 2212	3228	2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe	86
PID 3228 wrote to memory of 2212	3228	2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe	86
PID 3228 wrote to memory of 2212	3228	2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3228
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2212

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\hurok.exe

Filesize
64KB

MD5
920f868e68c86c586824d10e9a1e101b

SHA1
5e5587c15cef99e42405f0ac1595f32258b650fb

SHA256
b6c00206c6b797cd251d4c94b42bd84deb1ea93e1cd98ed436308f2a73fdf99e

SHA512
526841ab6ad4c5a652d6127c5ed5306439ff3e8c8ab4d5fc5afbdaf702127c23fd808e417fa67198c3131a18411e64ff8f55695ab24ff4f75ec7e19979530c1c

Download Submit
memory/2212-20-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/3228-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/3228-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/3228-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download