9782f9ab41fb0d0832d22c2758c12c896b4198b0f0b32e13174b71e757b0a100

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
02/06/2024, 04:32

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General

Target

2024-06-02_77502dbf4eb73c0f3caa2d01e8fe0b7c_cryptolocker.exe
Size

30KB
MD5

77502dbf4eb73c0f3caa2d01e8fe0b7c
SHA1

42ce6e7e34f27c814dea51b648cb3d7f0eb603e7
SHA256

9782f9ab41fb0d0832d22c2758c12c896b4198b0f0b32e13174b71e757b0a100
SHA512

1e84b1344aa805cf979870e8741cb6291cc48e1066a80e544cc523602b7d2e00aaa417eb64d91b4fe9c7e7c6ddcbc4d71c2760e8fafeb22fd2f59a8d5714aa6d
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNfK:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000e00000001214d-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000e00000001214d-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2028	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2928	2024-06-02_77502dbf4eb73c0f3caa2d01e8fe0b7c_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
2928	2024-06-02_77502dbf4eb73c0f3caa2d01e8fe0b7c_cryptolocker.exe
2028	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2928 wrote to memory of 2028	2928	2024-06-02_77502dbf4eb73c0f3caa2d01e8fe0b7c_cryptolocker.exe	28
PID 2928 wrote to memory of 2028	2928	2024-06-02_77502dbf4eb73c0f3caa2d01e8fe0b7c_cryptolocker.exe	28
PID 2928 wrote to memory of 2028	2928	2024-06-02_77502dbf4eb73c0f3caa2d01e8fe0b7c_cryptolocker.exe	28
PID 2928 wrote to memory of 2028	2928	2024-06-02_77502dbf4eb73c0f3caa2d01e8fe0b7c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-02_77502dbf4eb73c0f3caa2d01e8fe0b7c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_77502dbf4eb73c0f3caa2d01e8fe0b7c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2928
- 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:2028

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
31KB

MD5
5050b72059fcf8f37dd1b8d7a517d131

SHA1
16cccd4dcf362ba1f385203df97d422636186d26

SHA256
bfec03f3ffc164c84645a2fea0af93e470812b2ccd09d74d1566729cb2dd81da

SHA512
fdba5577e854f7e27ea4cf8e56ef9386f85d124b2b2040da2ac692850076de16c07166c77e2742b189cd6474bf7d022d3874bf902f8ccd71548d66b254186878

Download Submit
memory/2928-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2928-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2928-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download