33efc0634cd255c8d9a244771f3c4739b3c31c995f0e5273b377d5c4a212d504

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
30/04/2024, 11:42

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General

Target

2024-04-30_fabef84115346e5069f5ef82e6419501_cryptolocker.exe
Size

64KB
MD5

fabef84115346e5069f5ef82e6419501
SHA1

f4a9acd59235426d9b5d8b06e61b9d6dd2a247fa
SHA256

33efc0634cd255c8d9a244771f3c4739b3c31c995f0e5273b377d5c4a212d504
SHA512

078d7b2c7f4ef046fb8686b3c22a3e2295e559b4dd6849f697e1b4f8ca2f22e4f17787f6db74ecae637b8455fbc75aba5f95e5259cbf6139ac00a738345292e5
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293CiJ:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7L

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012324-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012324-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2932	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2784	2024-04-30_fabef84115346e5069f5ef82e6419501_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2784	2024-04-30_fabef84115346e5069f5ef82e6419501_cryptolocker.exe
2932	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 2932	2784	2024-04-30_fabef84115346e5069f5ef82e6419501_cryptolocker.exe	28
PID 2784 wrote to memory of 2932	2784	2024-04-30_fabef84115346e5069f5ef82e6419501_cryptolocker.exe	28
PID 2784 wrote to memory of 2932	2784	2024-04-30_fabef84115346e5069f5ef82e6419501_cryptolocker.exe	28
PID 2784 wrote to memory of 2932	2784	2024-04-30_fabef84115346e5069f5ef82e6419501_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-30_fabef84115346e5069f5ef82e6419501_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_fabef84115346e5069f5ef82e6419501_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
64KB

MD5
6d4c77596e31b94888c87036725289b5

SHA1
bba52027e89ca825e8507bcebc4007e30305b546

SHA256
f27af9338b72c365ce515accea35b6140b857ab064d9dcb4ba28faadf60691f9

SHA512
8540cd13873e5b9a53832752e1e77b7c3d04c7b83649b76aa03ce3c8c47425e3b04c79395ce9de5b58ef4e849fef9384324993a1307c9c1a7491828d75eb34b5

Download Submit
memory/2784-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2784-1-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2784-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download