edca37bcdee5b6163a094130abf10047c884588f846fa1ca92618e997b5d3021

Analysis

max time kernel
135s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 00:34

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-05-02_2818161c5961c8383aa616d111130bda_cryptolocker.exe
Size

44KB
MD5

2818161c5961c8383aa616d111130bda
SHA1

4436d96ca4c658b0d849a9a7ec6548d582861815
SHA256

edca37bcdee5b6163a094130abf10047c884588f846fa1ca92618e997b5d3021
SHA512

346161fcebdf59cd7058504b3c40e8ad285cbfa066538dea5ccc400fdb4a81484880619e533bb53f9159f4717e414369af6d9b92e3cdb7364eb11179eb45904e
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx6:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023b8e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023b8e-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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-05-02_2818161c5961c8383aa616d111130bda_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
628	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 4952 wrote to memory of 628	4952	2024-05-02_2818161c5961c8383aa616d111130bda_cryptolocker.exe	86
PID 4952 wrote to memory of 628	4952	2024-05-02_2818161c5961c8383aa616d111130bda_cryptolocker.exe	86
PID 4952 wrote to memory of 628	4952	2024-05-02_2818161c5961c8383aa616d111130bda_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-05-02_2818161c5961c8383aa616d111130bda_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_2818161c5961c8383aa616d111130bda_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4952
- 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:628

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
6671429a8d34ca8a52a46dd40a8aed1a

SHA1
b7c47ed9449858c3d3ea31bda35e81c32bec8b52

SHA256
59f969008a6a24c3b4829234d3984392b72e54d428286997c3203b240f4fb959

SHA512
ca49000260430eba805a23eeb68de2470ae629f81fa3a8ae71319b2bb89a883f80b1265fa05c458e23d9c63414af3b8866188a74df49781f3208d8309adcde2d

Download Submit
memory/628-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4952-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4952-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4952-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download