785b31d2ddd39821e5ef30a3bc05fd2a3fec45268115d45e83cc0289e67f3cd5

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
10-05-2024 12:37

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General

Target

2024-05-10_521612a32421273ce779cd41a803677c_cryptolocker.exe
Size

40KB
MD5

521612a32421273ce779cd41a803677c
SHA1

a981721f325ff81c7acc0f7e943ecf59ca0b1e28
SHA256

785b31d2ddd39821e5ef30a3bc05fd2a3fec45268115d45e83cc0289e67f3cd5
SHA512

c4fdb4b5f1dec57ac0a85a76ca24f474d75284fff4f3fa7708b8e47f9b7f3bc3f926b8c4d00aa12929d3c8f0b55d8d5a43a03440d438073130e1d6ac525e805b
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmT3Hwz:bA6YcA/X6G0W143Qz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000015d31-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
760	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2044	2024-05-10_521612a32421273ce779cd41a803677c_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 760	2044	2024-05-10_521612a32421273ce779cd41a803677c_cryptolocker.exe	28
PID 2044 wrote to memory of 760	2044	2024-05-10_521612a32421273ce779cd41a803677c_cryptolocker.exe	28
PID 2044 wrote to memory of 760	2044	2024-05-10_521612a32421273ce779cd41a803677c_cryptolocker.exe	28
PID 2044 wrote to memory of 760	2044	2024-05-10_521612a32421273ce779cd41a803677c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-10_521612a32421273ce779cd41a803677c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_521612a32421273ce779cd41a803677c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:760

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\hasfj.exe

Filesize
40KB

MD5
05f517b8047e1eab776039105b06e508

SHA1
6d6d92268ffa11896fc142ff8d16923594885cde

SHA256
d5210a1fba392d488f6488997559142c0e232d1c2483d2755ebde78e0b4bd593

SHA512
bb26ab3947e8ab785364db1031afcb041135adb2ab04e010c71975c3a1a76a71fa26f1a5712d5f2a9b6e8fbd88b2587d34a98d966721c1033721f2ec74b914f5

Download Submit
memory/760-15-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/760-22-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2044-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2044-1-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2044-8-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download