6ce637c7791fb0b2fc8939501d5df1062090165665544589df567a721cfc4e7f

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2024, 03:35

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General

Target

2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe
Size

61KB
MD5

573cae1b1b7bf781691d6cf6e8b0963b
SHA1

108b457f3e3f9486f1566cafdf5a830025329642
SHA256

6ce637c7791fb0b2fc8939501d5df1062090165665544589df567a721cfc4e7f
SHA512

8a7f78a65d433caa7b0bdade0231ca0f1641a1e9fd2aaf41a51d6f447eee633e429fca95fb84d0a39b2d150ac5eb6d0b88c2856f58a756446ec06ef3743e3ad2
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzp0oj670hr:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231e0-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231e0-12.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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2800	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 2276 wrote to memory of 2800	2276	2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe	88
PID 2276 wrote to memory of 2800	2276	2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe	88
PID 2276 wrote to memory of 2800	2276	2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2276
- 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:2800

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
61KB

MD5
e4674ee4f7800178f8121e635418423a

SHA1
e48fbbe705dbdb17299cfa024d9af91489244b3e

SHA256
af21e8fd9da72f6f4723660a5d4e01eba60170435237ade2f56dc6f329746167

SHA512
0ca0fa9e283e00fd13d055056f3a9a68aacfdca96f037ab40a9ea34510ccba7986483e52a61724bbea9acd6f5deb7e180f07caa09f6140e769d6e9c3c976e944

Download Submit
memory/2276-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2276-1-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/2276-0-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/2800-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download