629c881ae0ab751ed277a38b5a67e435901eb4d951a6bd86dc80b1308d5a9bd3

Analysis

max time kernel
92s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 21:43

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General

Target

2024-06-03_cbc83d889b208e7e2b12363d006b6cce_cryptolocker.exe
Size

48KB
MD5

cbc83d889b208e7e2b12363d006b6cce
SHA1

6ad7c22ba5d3e2a55a40467154cf9f29321aab8f
SHA256

629c881ae0ab751ed277a38b5a67e435901eb4d951a6bd86dc80b1308d5a9bd3
SHA512

2367c582d32185c2c626f1f5c5f95ae74b10402cc7e45eceaf7fc13b5e51c3868c527b37c23912a92f4c9a5f8d36b16dec5930f83c70612261cca2995faf6948
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x5hjatshB:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023288-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023288-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-06-03_cbc83d889b208e7e2b12363d006b6cce_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1480	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 4020 wrote to memory of 1480	4020	2024-06-03_cbc83d889b208e7e2b12363d006b6cce_cryptolocker.exe	81
PID 4020 wrote to memory of 1480	4020	2024-06-03_cbc83d889b208e7e2b12363d006b6cce_cryptolocker.exe	81
PID 4020 wrote to memory of 1480	4020	2024-06-03_cbc83d889b208e7e2b12363d006b6cce_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-03_cbc83d889b208e7e2b12363d006b6cce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_cbc83d889b208e7e2b12363d006b6cce_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4020
- 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:1480

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
48KB

MD5
aced0433184f4a3bdb7020bc3a732572

SHA1
60b0abb3eebbb422390e654e5f1ec206a51b3625

SHA256
1b3c71b41297fbfe6deb8566869e637a2181eb2aa97882b36178ca89b9859eb8

SHA512
3bacba4dfb0fb473ff580012eb06aed355eca01f64b88d56ff6a8b0e17d9a2b9579f785540167086852d2a2f3b47aab9b22d4ad59afbf8e1e788a38b706f91b8

Download Submit
memory/1480-25-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4020-0-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4020-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4020-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download