6ca9909d57350a102ab33ac5d31f68f4f2369de83297ed31ab93ec9d0e1a6d0b

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-02-2024 09:51

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General

Target

2024-02-22_881d5895d2f4d7075735acb478b95074_cryptolocker.exe
Size

44KB
MD5

881d5895d2f4d7075735acb478b95074
SHA1

121045e0b311aeb76e0a8045e1103d94de7630bf
SHA256

6ca9909d57350a102ab33ac5d31f68f4f2369de83297ed31ab93ec9d0e1a6d0b
SHA512

69833fc62cbfaa374ba0355761ae4489fbb093b7eb826a71a3199f8e84a2c94326c751c2302c057c6bf5abfc2aa374e1f9a1a420dc6050cee8542d7be3f08c96
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqmz4kmmIPTMx:bc/y2lkF0+BjjIIbQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001223a-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2064	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2224	2024-02-22_881d5895d2f4d7075735acb478b95074_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
2224	2024-02-22_881d5895d2f4d7075735acb478b95074_cryptolocker.exe
2064	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2064	2224	2024-02-22_881d5895d2f4d7075735acb478b95074_cryptolocker.exe	28
PID 2224 wrote to memory of 2064	2224	2024-02-22_881d5895d2f4d7075735acb478b95074_cryptolocker.exe	28
PID 2224 wrote to memory of 2064	2224	2024-02-22_881d5895d2f4d7075735acb478b95074_cryptolocker.exe	28
PID 2224 wrote to memory of 2064	2224	2024-02-22_881d5895d2f4d7075735acb478b95074_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-22_881d5895d2f4d7075735acb478b95074_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_881d5895d2f4d7075735acb478b95074_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2064

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\rewok.exe

Filesize
44KB

MD5
f4cf4b7780f2c43903f0bb060c533b21

SHA1
6a4afea2e0c0e2663b3ba7a19e439c6e8104d68c

SHA256
52703a7e0338375ed99c705a7b3bc9b7a995e0a81a86cc0f6cb60c6567097520

SHA512
c5f19fe94c74f206b2b67a64547d94cdc1d02bd166e6d1c96458a2346ce5db0f4e94f09c290b2070ddcae6755aabddf9286579d9541c56e8cb1e8992c47451a3

Download Submit
memory/2064-17-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2224-0-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2224-2-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2224-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download