6ce637c7791fb0b2fc8939501d5df1062090165665544589df567a721cfc4e7f

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/01/2024, 03:35

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General

Target

2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe
Size

61KB
MD5

573cae1b1b7bf781691d6cf6e8b0963b
SHA1

108b457f3e3f9486f1566cafdf5a830025329642
SHA256

6ce637c7791fb0b2fc8939501d5df1062090165665544589df567a721cfc4e7f
SHA512

8a7f78a65d433caa7b0bdade0231ca0f1641a1e9fd2aaf41a51d6f447eee633e429fca95fb84d0a39b2d150ac5eb6d0b88c2856f58a756446ec06ef3743e3ad2
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzp0oj670hr:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00080000000120dc-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x00080000000120dc-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2688	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1504	2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_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
1504	2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe
2688	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 2688	1504	2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe	28
PID 1504 wrote to memory of 2688	1504	2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe	28
PID 1504 wrote to memory of 2688	1504	2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe	28
PID 1504 wrote to memory of 2688	1504	2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_573cae1b1b7bf781691d6cf6e8b0963b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1504
- 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:2688

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
61KB

MD5
e4674ee4f7800178f8121e635418423a

SHA1
e48fbbe705dbdb17299cfa024d9af91489244b3e

SHA256
af21e8fd9da72f6f4723660a5d4e01eba60170435237ade2f56dc6f329746167

SHA512
0ca0fa9e283e00fd13d055056f3a9a68aacfdca96f037ab40a9ea34510ccba7986483e52a61724bbea9acd6f5deb7e180f07caa09f6140e769d6e9c3c976e944

Download Submit
memory/1504-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1504-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1504-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2688-23-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download