796ff02de9ee7476b3af3a592e4b9997ba501f81ccc92e583e9fee31b97031cb

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
19/04/2024, 00:38

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General

Target

2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe
Size

63KB
MD5

a802b8b701ee7600152f4fea0e350a4e
SHA1

fc8bff0d71c0f36692c58b64adea97d58cf20c74
SHA256

796ff02de9ee7476b3af3a592e4b9997ba501f81ccc92e583e9fee31b97031cb
SHA512

853007f6a997cdb366809d9f0922e5d56009c65e62dc01c0237b2b8737134086685521ae1fc41ac79e4618404c6813fb2c300b9c9701be229ef12f21c37c4893
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScGh:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7s

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a0000000143fb-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a0000000143fb-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2484	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
3040	2024-04-19_a802b8b701ee7600152f4fea0e350a4e_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
3040	2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe
2484	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2484	3040	2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe	28
PID 3040 wrote to memory of 2484	3040	2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe	28
PID 3040 wrote to memory of 2484	3040	2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe	28
PID 3040 wrote to memory of 2484	3040	2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_a802b8b701ee7600152f4fea0e350a4e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3040
- 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:2484

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
64KB

MD5
920f868e68c86c586824d10e9a1e101b

SHA1
5e5587c15cef99e42405f0ac1595f32258b650fb

SHA256
b6c00206c6b797cd251d4c94b42bd84deb1ea93e1cd98ed436308f2a73fdf99e

SHA512
526841ab6ad4c5a652d6127c5ed5306439ff3e8c8ab4d5fc5afbdaf702127c23fd808e417fa67198c3131a18411e64ff8f55695ab24ff4f75ec7e19979530c1c

Download Submit
memory/2484-19-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/3040-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/3040-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3040-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download