4cf7d1fea0dcf2bc91ee3deb815b4a798250ddaea647a13759aff321c9c2810f

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-04-2024 08:43

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General

Target

2024-04-25_e0c29d15db4795dab4513c449bedd479_cryptolocker.exe
Size

50KB
MD5

e0c29d15db4795dab4513c449bedd479
SHA1

fefd6016e49b900f3ce056ba557d43cf42cc8b3a
SHA256

4cf7d1fea0dcf2bc91ee3deb815b4a798250ddaea647a13759aff321c9c2810f
SHA512

c15ae9ad28e09a90b8a47384f0bdbcb6faf0c89e3ffe11cb35ffca4369c96df167f3956b3fcaa3371a43390f9d72b990ceb62feb28c75b6d9ef9456481776410
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIr:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7Q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012247-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012247-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3016	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2868	2024-04-25_e0c29d15db4795dab4513c449bedd479_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
2868	2024-04-25_e0c29d15db4795dab4513c449bedd479_cryptolocker.exe
3016	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 3016	2868	2024-04-25_e0c29d15db4795dab4513c449bedd479_cryptolocker.exe	28
PID 2868 wrote to memory of 3016	2868	2024-04-25_e0c29d15db4795dab4513c449bedd479_cryptolocker.exe	28
PID 2868 wrote to memory of 3016	2868	2024-04-25_e0c29d15db4795dab4513c449bedd479_cryptolocker.exe	28
PID 2868 wrote to memory of 3016	2868	2024-04-25_e0c29d15db4795dab4513c449bedd479_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-25_e0c29d15db4795dab4513c449bedd479_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_e0c29d15db4795dab4513c449bedd479_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2868
- 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:3016

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
51KB

MD5
62d303540ddad9c9b9f68131b5f5b197

SHA1
2c699e6ef447ec04ca83276335237c32b5de460d

SHA256
c059b534b4f8a3acb6669fbac6d6a52feccb6de68177b6fab3823ebf3b52102b

SHA512
30999e9535c10f4212289440962e0abb580c274f2c0b39bbe327ed124f4acbddee9b8f4c60ea80bcb8314319e11df6899701ec5d16b9bb6b00cc8ab5f60ebfc2

Download Submit
memory/2868-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2868-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2868-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download