defd8098b75c209e0107ac4789d7fc5987f1ee74ed4b7efaa2cf77c5a9927382

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18/04/2024, 04:24

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General

Target

2024-04-18_02a38f2804567bf4e7a9e940b2979475_cryptolocker.exe
Size

51KB
MD5

02a38f2804567bf4e7a9e940b2979475
SHA1

96fed47b1809f4ca6ea24a9e737d32ccc472fc4c
SHA256

defd8098b75c209e0107ac4789d7fc5987f1ee74ed4b7efaa2cf77c5a9927382
SHA512

f4bbce85d3c6aa2751a9c6cc74fb5b4d8703528fdff7cd000dca3a799becd342ed8035a11964066e608ec5863e85f6d4d19e854482d72c1a0010a723beaa0daa
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKxc:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224d-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224d-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2552	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2320	2024-04-18_02a38f2804567bf4e7a9e940b2979475_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
2320	2024-04-18_02a38f2804567bf4e7a9e940b2979475_cryptolocker.exe
2552	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 2552	2320	2024-04-18_02a38f2804567bf4e7a9e940b2979475_cryptolocker.exe	28
PID 2320 wrote to memory of 2552	2320	2024-04-18_02a38f2804567bf4e7a9e940b2979475_cryptolocker.exe	28
PID 2320 wrote to memory of 2552	2320	2024-04-18_02a38f2804567bf4e7a9e940b2979475_cryptolocker.exe	28
PID 2320 wrote to memory of 2552	2320	2024-04-18_02a38f2804567bf4e7a9e940b2979475_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-18_02a38f2804567bf4e7a9e940b2979475_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_02a38f2804567bf4e7a9e940b2979475_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2320
- 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:2552

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
fd4372c3cbddddea3d137eed515bcae3

SHA1
317eff2f7d1e8fc36425ee6af008d38bd4ec6b66

SHA256
a57b04dfa2051abe5fcbc6a3306f8bfcfbc2801edb654667a908976d9b11cf6f

SHA512
8e68842693de23dbf3805543882769c11c0354fa6e24629410350d26c566c205dbcf64a5ad76bc215927f69d118905c8bb6a0d522af5a0f36b3911f309f02f91

Download Submit
memory/2320-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2320-1-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2320-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2552-23-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download