61b9b433162e649d8618a8a9d63b9f8f344870d113b2fa3940d717aef2013556

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 04:44

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General

Target

2024-06-04_73bcc41c44d0c09078c7e57b6ecfaac7_cryptolocker.exe
Size

43KB
MD5

73bcc41c44d0c09078c7e57b6ecfaac7
SHA1

086712142e4d1770bd55e0096249b6c54c5367eb
SHA256

61b9b433162e649d8618a8a9d63b9f8f344870d113b2fa3940d717aef2013556
SHA512

ac340100b361299e24c8db27483ba651898a56c71590df422dfe34f923ccc15d7a1d459d164823293a6f0eb09feeb4ebdc16b406656359275b4b04048e77cd58
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx8:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000233be-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000233be-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-04_73bcc41c44d0c09078c7e57b6ecfaac7_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2264	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 3520 wrote to memory of 2264	3520	2024-06-04_73bcc41c44d0c09078c7e57b6ecfaac7_cryptolocker.exe	82
PID 3520 wrote to memory of 2264	3520	2024-06-04_73bcc41c44d0c09078c7e57b6ecfaac7_cryptolocker.exe	82
PID 3520 wrote to memory of 2264	3520	2024-06-04_73bcc41c44d0c09078c7e57b6ecfaac7_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-04_73bcc41c44d0c09078c7e57b6ecfaac7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_73bcc41c44d0c09078c7e57b6ecfaac7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3520
- 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:2264

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
43KB

MD5
984dba1c23177a2aef41c367f0f9a16d

SHA1
24c106aced4940ff9602f4facda4e75cfc2b6dfb

SHA256
5489963ac0a61178e1c31c2e16ffc5c5cdf9895a4d194f7b24ae5feda3971925

SHA512
c5aa56e9cb39888a5676a71d9684f79ea7d07488b04f52e3eb45231484c29edbe27ffb964b47cb70d4344d67b9e278f555fd856a0c6c609cb9f014e3332bcd67

Download Submit
memory/2264-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3520-0-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download
memory/3520-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3520-7-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download