61472d1784f2bb481cf02515ee533905e5ca81de4d1b993a989dc7c436929301

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
14/06/2024, 01:01

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General

Target

2024-06-14_9000a7bd71a886cc1efd8eff757210c0_cryptolocker.exe
Size

44KB
MD5

9000a7bd71a886cc1efd8eff757210c0
SHA1

0cecba79d33e578affb2c4d5e01021f859d608c8
SHA256

61472d1784f2bb481cf02515ee533905e5ca81de4d1b993a989dc7c436929301
SHA512

69370ab9ef0ff96e7e8c7a420a30ded411b6dfe3714573775794b3c630f535639bd0130cf2745d3f6fd7f9b87927afe92e6c5a3b15affe9c9f76442cfe8cf8bb
SSDEEP

768:nf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGWXOQ69zbjlAAb:f1KhxqwtdgI2MyzNORQtOflIwoHNV2Xh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014284-22.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014284-22.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2736	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1996	2024-06-14_9000a7bd71a886cc1efd8eff757210c0_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
1996	2024-06-14_9000a7bd71a886cc1efd8eff757210c0_cryptolocker.exe
2736	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2736	1996	2024-06-14_9000a7bd71a886cc1efd8eff757210c0_cryptolocker.exe	28
PID 1996 wrote to memory of 2736	1996	2024-06-14_9000a7bd71a886cc1efd8eff757210c0_cryptolocker.exe	28
PID 1996 wrote to memory of 2736	1996	2024-06-14_9000a7bd71a886cc1efd8eff757210c0_cryptolocker.exe	28
PID 1996 wrote to memory of 2736	1996	2024-06-14_9000a7bd71a886cc1efd8eff757210c0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-14_9000a7bd71a886cc1efd8eff757210c0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_9000a7bd71a886cc1efd8eff757210c0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1996
- 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:2736

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

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
44KB

MD5
4d582b2666bb51572d879774e45a353d

SHA1
3b5c9f81d300d02a43a992f800ea9b6342f810e4

SHA256
7dde20e69044274ebd67c6734277629575df8c92c67b83c55820457eb1d28f90

SHA512
44eb227dec32bb94ef0f1e471a33985eac9670e2eee428a20b5b7f570bc13e2fda608d7a8cef13a50523dc3be8b41acbf377607a2eccf6adcf2190c8f8718128

Download Submit
memory/1996-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1996-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1996-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download