c8dde2644412f6fda2f4c0ceb0fd66c2733a462a5e8830d43f9cf888e52cd81c

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
24/01/2024, 06:35

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General

Target

2024-01-24_d51d09640e687e7854f76a2efc4f23b5_cryptolocker.exe
Size

63KB
MD5

d51d09640e687e7854f76a2efc4f23b5
SHA1

5cb968c213c7451ade359ac46536de390f8b1321
SHA256

c8dde2644412f6fda2f4c0ceb0fd66c2733a462a5e8830d43f9cf888e52cd81c
SHA512

6b834d21452b67faee8e33fecdffd21a4d7146770ec2ce0580a7b68172c76de9cee900e4d8d0ab6ade6f091e83bc1c82092d724ade56c82c453d320ba26c6571
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRT:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7K

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014a5b-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014a5b-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2356	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2204	2024-01-24_d51d09640e687e7854f76a2efc4f23b5_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
2204	2024-01-24_d51d09640e687e7854f76a2efc4f23b5_cryptolocker.exe
2356	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2356	2204	2024-01-24_d51d09640e687e7854f76a2efc4f23b5_cryptolocker.exe	28
PID 2204 wrote to memory of 2356	2204	2024-01-24_d51d09640e687e7854f76a2efc4f23b5_cryptolocker.exe	28
PID 2204 wrote to memory of 2356	2204	2024-01-24_d51d09640e687e7854f76a2efc4f23b5_cryptolocker.exe	28
PID 2204 wrote to memory of 2356	2204	2024-01-24_d51d09640e687e7854f76a2efc4f23b5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-24_d51d09640e687e7854f76a2efc4f23b5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_d51d09640e687e7854f76a2efc4f23b5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2204
- 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:2356

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

Replay Monitor

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Downloads

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

Filesize
64KB

MD5
c1578410ba7bb36ca8df66a0731d446c

SHA1
d4beb18bcea66c2ccdbd2591742b669e10b7c11f

SHA256
c34564f982da6d3fc1cf84b716bae75894c8ac7d1a931b041f9076170241c451

SHA512
4adcc8981908bde5b7b051f2888340d421bd39889f8f71014de0e7481554c6d434d6b2dba6985e6bb1a6ae6a8ce783ecaf917ccf265d6741f4781c22face0b94

Download Submit
memory/2204-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2204-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2204-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2356-16-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download