5ffe3b588f2b6f90f8a3a20a708eb26a10c0bad2b7e64cf198ce2a424319e587

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
17-02-2024 23:33

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General

Target

2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe
Size

35KB
MD5

95238c544af7dbaa94a6264fde1b22db
SHA1

cbe328978e277039100c1c744ccf7b897254c6af
SHA256

5ffe3b588f2b6f90f8a3a20a708eb26a10c0bad2b7e64cf198ce2a424319e587
SHA512

63d1b02378ca5de5b79e5c3437756859245770b889155994e0e8756b170ed75ee37e364701b42495f4e0ad3bdda317ab147489e81a5f0ce08f7d07d5f645c988
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wmkpD:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012262-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012262-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2744	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1200	2024-02-17_95238c544af7dbaa94a6264fde1b22db_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
1200	2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe
2744	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 2744	1200	2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe	28
PID 1200 wrote to memory of 2744	1200	2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe	28
PID 1200 wrote to memory of 2744	1200	2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe	28
PID 1200 wrote to memory of 2744	1200	2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_95238c544af7dbaa94a6264fde1b22db_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1200
- 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:2744

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
35KB

MD5
e73ee8cdf4794698e22a0b2a06f09e05

SHA1
b676f1c84ecf794be4ed9555b6591691c5325450

SHA256
c4b96dcd51615036017b22adec7448a7b95e9eb8ba2b05c1903e787fbd3a4279

SHA512
48d2fa1698d08e25a85fdfead2145d50162ff469c5bbdc9fc3af21a75a648a95798b6a18fc4b4d83ce2aa8689870d414079a9e66283fe730848090fdd09873d1

Download Submit
memory/1200-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1200-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1200-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2744-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download