f6bc5f104e5da876e7bf5e6481da3176c7408b0c5f4d328114ae718b19dc58ae

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04/05/2024, 19:09

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General

Target

2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe
Size

31KB
MD5

82a126a911af851bbccf5494583f51ce
SHA1

5560fae6b646460539dd40d48984ab498127846f
SHA256

f6bc5f104e5da876e7bf5e6481da3176c7408b0c5f4d328114ae718b19dc58ae
SHA512

42d7bd3cee1a39e1570f7ab2032792b0b44601e93ffa9f4dae15930b1327e407ee43d7a36464adc63a145c5345f655f03fde7ea32b1c481046eccb4ea7094360
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvv:bG74zYcgT/Ekd0ryfjkv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1728-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2556-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1728-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000014454-14.dat	CryptoLocker_rule2
behavioral1/memory/2556-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2556	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1728	2024-05-04_82a126a911af851bbccf5494583f51ce_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 1728 wrote to memory of 2556	1728	2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe	28
PID 1728 wrote to memory of 2556	1728	2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe	28
PID 1728 wrote to memory of 2556	1728	2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe	28
PID 1728 wrote to memory of 2556	1728	2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2556

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\hasfj.exe

Filesize
31KB

MD5
54cbde494b9d473d2f3ee86395066913

SHA1
627964ae76defb988e607a46b7b3b3db3ac49dba

SHA256
c2d7b7e2ba6d444b2cf03bf051b427ec765ce2a0ed0961ac37c1f9774da98d22

SHA512
60db1a450012472416903cc495a99a6fd557a8ef793340d0ee91f0b8aac70b93e9e1b84b56f46d0d462d30066ee1679aa042706e5a28c3056a3083523488fa96

Download Submit
memory/1728-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1728-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/1728-1-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1728-9-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1728-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2556-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2556-18-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2556-25-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2556-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download