b2ad355f0f731a1bd2a879229d1d26c03692e8b8b9a9e4b1bd15489c03f20265

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
28/04/2024, 03:55

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe
Size

42KB
MD5

edfa89c3010ca09184be57f88d0d51da
SHA1

a7a33e23d9995af22518a388e4ba9bc8f29961a6
SHA256

b2ad355f0f731a1bd2a879229d1d26c03692e8b8b9a9e4b1bd15489c03f20265
SHA512

b682020cb3a085d80c761939cb01d990393fc9903fa25bcb2aa9a1bcb5922557a5770eb8820ebc917836faa29dbf9e410c0696c9d64f5586b197c1910d60d89a
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAHa:bCDOw9aMDooc+vA6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1516-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012271-11.dat	CryptoLocker_rule2
behavioral1/memory/1516-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2164-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2164-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2164	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1516	2024-04-28_edfa89c3010ca09184be57f88d0d51da_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 1516 wrote to memory of 2164	1516	2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe	28
PID 1516 wrote to memory of 2164	1516	2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe	28
PID 1516 wrote to memory of 2164	1516	2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe	28
PID 1516 wrote to memory of 2164	1516	2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2164

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

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
42KB

MD5
286f6a65fccd38702720ecb0038ea24b

SHA1
f7b1c427dec12c3048d4089b2dcfccc8cbf418c3

SHA256
4f73430677554526067287d473a58535cee9ec435ad4892851890bd4eb75b561

SHA512
1db07e1af932cd1cdee72879b8e3f2e5a786a74344aa3bdd66aed7e1e98c1f5ef6db2bde5b432d054bf9e4c25fae86914148408f67d8ae6111ff1102b6fabe96

Download Submit
memory/1516-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1516-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1516-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1516-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1516-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2164-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2164-18-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/2164-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download