3c60d8b5c4a141f7f2690f19b5c4c8588981b945e5908d6e3ee34cbf365eb163

Analysis

max time kernel
134s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27/05/2024, 02:46

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General

Target

2024-05-27_d9b38f5bffd4c7038566b0dce98f17fa_cryptolocker.exe
Size

30KB
MD5

d9b38f5bffd4c7038566b0dce98f17fa
SHA1

5fb08b53e70daa99e51ae26ada5264a6c90a1230
SHA256

3c60d8b5c4a141f7f2690f19b5c4c8588981b945e5908d6e3ee34cbf365eb163
SHA512

dfae90ac484b5e834c8722d943bec122f660e993ce37408473b8b9912976e78d2279032d4f7702287d4cee1723ee3442a74bb712d3b29668c54fb4428f810f5f
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNfh:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002328e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002328e-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	2024-05-27_d9b38f5bffd4c7038566b0dce98f17fa_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
3856	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 3644 wrote to memory of 3856	3644	2024-05-27_d9b38f5bffd4c7038566b0dce98f17fa_cryptolocker.exe	83
PID 3644 wrote to memory of 3856	3644	2024-05-27_d9b38f5bffd4c7038566b0dce98f17fa_cryptolocker.exe	83
PID 3644 wrote to memory of 3856	3644	2024-05-27_d9b38f5bffd4c7038566b0dce98f17fa_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-27_d9b38f5bffd4c7038566b0dce98f17fa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_d9b38f5bffd4c7038566b0dce98f17fa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3644
- 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:3856

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
30KB

MD5
bcd620ee8082edcd956a73a92502c030

SHA1
4cbd064488c422a08b49765730d51e9161380e4c

SHA256
01ac84b5dd0423c2dae9869beb8f47a29642fe390fa00109c8cbd070fb1a7784

SHA512
22a653d53316e83a39f3df3fd992839916de5d8ef1a165f59f912ca616a14a620906d7e0d0a2161a4ac10b135e57b0e5516a3bd012655e61d25cd031c85d2884

Download Submit
memory/3644-0-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3644-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3644-8-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3856-25-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download