0611246a0b6c56f6eb585f5915794057cdabd00e6c757c80b825e6da9acbc9c2

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 05:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-04_5e82b1962286f63ad71e2d6b6fe5bdac_cryptolocker.exe
Size

49KB
MD5

5e82b1962286f63ad71e2d6b6fe5bdac
SHA1

8d71b816619628cd2927713f13e88458155db669
SHA256

0611246a0b6c56f6eb585f5915794057cdabd00e6c757c80b825e6da9acbc9c2
SHA512

91b13ad158f6377af3fd53c53fe128a42b2f2b71211708effac9c6e9d2e40063db42959c4e03fab47897a8c8328416a6077a232857782193ab235af6021121b4
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAI0:aq7tdgI2MyzNORQtOflIwoHNV2XBFV73

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023218-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023218-12.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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-04_5e82b1962286f63ad71e2d6b6fe5bdac_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3956	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 2392 wrote to memory of 3956	2392	2024-02-04_5e82b1962286f63ad71e2d6b6fe5bdac_cryptolocker.exe	84
PID 2392 wrote to memory of 3956	2392	2024-02-04_5e82b1962286f63ad71e2d6b6fe5bdac_cryptolocker.exe	84
PID 2392 wrote to memory of 3956	2392	2024-02-04_5e82b1962286f63ad71e2d6b6fe5bdac_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-04_5e82b1962286f63ad71e2d6b6fe5bdac_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_5e82b1962286f63ad71e2d6b6fe5bdac_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2392
- 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:3956

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
49KB

MD5
08511c1bf7855022ada751614e51bdc7

SHA1
9f7261c630c022d4c3e7beb0d92b4a46cf6ad976

SHA256
05b676013c7af00ad6659410dcd1f61cbf1ea38b9e22c7abde19b9d43c172955

SHA512
af48f0b1968ffcba75611b1938e0ba1d65508c71f6b5b38b532575588f889241f9344af8b2d74252909968464b7c0c14483d22224abbd6e64f48eb507696a60f

Download Submit
memory/2392-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2392-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2392-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3956-22-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download