cd3fa6f968151f345361d2276dd2664458d4d8a9aace0cdbd31df0dee1006beb

Analysis

max time kernel
143s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26-04-2024 19:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe
Size

43KB
MD5

ee92db100930e20ab11921d51fe1f637
SHA1

e034e72bf3f15205a3776db30f53330494477654
SHA256

cd3fa6f968151f345361d2276dd2664458d4d8a9aace0cdbd31df0dee1006beb
SHA512

3cc47bfae9f44224838d566ba2d8175b6cc2fa943deaf0390aca5b24b49c11d187716df64b296df23c52096ead66c7efef90d716363b04fbd6ae3f2f6569963e
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxI:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002324f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002324f-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4028	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 1900 wrote to memory of 4028	1900	2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe	92
PID 1900 wrote to memory of 4028	1900	2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe	92
PID 1900 wrote to memory of 4028	1900	2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1900
- 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:4028

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3168 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:492

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

Loading Replay Monitor...

Downloads

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

Filesize
44KB

MD5
57833f3cd90d750bcfea954c826cfc96

SHA1
12d8528caf6e600693a8c825f21868910b78a06a

SHA256
44f9e6e41983d1bcfa839fd7c619ca7366160f818b0af120d4bcdd226c5532d1

SHA512
b9c7b1293bf75e7949c104d2722e71ac6de4f81386ba852f382aa63ad0644f512f73736559865df1bea2cc7ba470b72c11d78c20dc9f1130c4a76716fd2bce6c

Download Submit
memory/1900-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1900-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1900-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4028-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download