b7b267d2bcdd71825231d4f6079d90b9473b996590a7310c68a3e65a630a7597

Analysis

max time kernel
94s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
05/06/2024, 04:36

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General

Target

2024-06-05_7d446e5c7063a3e3d7bc33b1d30e0539_cryptolocker.exe
Size

66KB
MD5

7d446e5c7063a3e3d7bc33b1d30e0539
SHA1

eebc54e9c1558613ff6bd6502fc6cf20f7efb3da
SHA256

b7b267d2bcdd71825231d4f6079d90b9473b996590a7310c68a3e65a630a7597
SHA512

3cf6545b9c89b0cf0eb78742da0eed0fd7a6ba1c285cb9855c5ccc303969a8558ad312dc15dd6f235df61bbe1f6f60e5658487158d19ba657774da526a6471a5
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScGO:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7n

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023286-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023286-12.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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-06-05_7d446e5c7063a3e3d7bc33b1d30e0539_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2988	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 800 wrote to memory of 2988	800	2024-06-05_7d446e5c7063a3e3d7bc33b1d30e0539_cryptolocker.exe	82
PID 800 wrote to memory of 2988	800	2024-06-05_7d446e5c7063a3e3d7bc33b1d30e0539_cryptolocker.exe	82
PID 800 wrote to memory of 2988	800	2024-06-05_7d446e5c7063a3e3d7bc33b1d30e0539_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-05_7d446e5c7063a3e3d7bc33b1d30e0539_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_7d446e5c7063a3e3d7bc33b1d30e0539_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:800
- 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:2988

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
66KB

MD5
504dc99860c1543b7d496320f892c900

SHA1
c117c46a94db00d43c9db86b3fb9f3c7bc1364ec

SHA256
14f992c2390230bea2fe2785a0944c109c2005e9bc1718c7bd828b149bb5b4c7

SHA512
ea527cf2b7287cacc8cd0e56b356c44ce1b5be7398a4eacdb5692a21ac86c6cd872527623c750b4922bdf108dc496e02783bcf71a10d5b4fc2643017e76a53fc

Download Submit
memory/800-0-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/800-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/800-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2988-25-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download