53b7b9109147dc5771f4556aea304f52fb7dff5e6126cbeb8118bb153628deea

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 12:41

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General

Target

2024-05-24_7db4e2ff9ea52819c02d2c2bf683d0c2_cryptolocker.exe
Size

42KB
MD5

7db4e2ff9ea52819c02d2c2bf683d0c2
SHA1

a9573fbbbd5b5e5961d12d245c335fbc51a43755
SHA256

53b7b9109147dc5771f4556aea304f52fb7dff5e6126cbeb8118bb153628deea
SHA512

6874f74eae99cf0d99ca32621ebf1a92d620f12d64764bb364a4ccfcfcef229f85e5e8a390728ff717910e4b3e22eb94cc19c9e9fb9b71acfdc5343003c4f507
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqtm:bCDOw9aMDooc+vAqtm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1704-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012342-11.dat	CryptoLocker_rule2
behavioral1/memory/1704-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1532-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1532-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1532	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1704	2024-05-24_7db4e2ff9ea52819c02d2c2bf683d0c2_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 1704 wrote to memory of 1532	1704	2024-05-24_7db4e2ff9ea52819c02d2c2bf683d0c2_cryptolocker.exe	28
PID 1704 wrote to memory of 1532	1704	2024-05-24_7db4e2ff9ea52819c02d2c2bf683d0c2_cryptolocker.exe	28
PID 1704 wrote to memory of 1532	1704	2024-05-24_7db4e2ff9ea52819c02d2c2bf683d0c2_cryptolocker.exe	28
PID 1704 wrote to memory of 1532	1704	2024-05-24_7db4e2ff9ea52819c02d2c2bf683d0c2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-24_7db4e2ff9ea52819c02d2c2bf683d0c2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_7db4e2ff9ea52819c02d2c2bf683d0c2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1532

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\lossy.exe

Filesize
42KB

MD5
23681a75eff1d28adb06fd9babac7346

SHA1
5fb1dee3a6c826c30f21d573cd3428aa79826c33

SHA256
3738c03862a999059114c585972e77f7e0e90726f766fadae41d636ffde9c828

SHA512
f29b8e7b8f2031a14b4d5f3948b7bf3f3c49d8c1f7969b197c59ff7a71f1b41bdb2acddbb118a252a1b1490d4190609cedb6c184f7fa79c8add138c7524febf6

Download Submit
memory/1532-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1532-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1532-25-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/1532-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1704-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1704-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1704-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1704-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1704-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download