99fbcfd3259b6561654df38d248184497474f4368c232df864212543ed795444

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
11/05/2024, 22:24

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General

Target

2024-05-11_456c068dfa4bb45281b2f36f7d220fef_cryptolocker.exe
Size

41KB
MD5

456c068dfa4bb45281b2f36f7d220fef
SHA1

52385812d127a7ab1846a82226bb5fbb19acea7c
SHA256

99fbcfd3259b6561654df38d248184497474f4368c232df864212543ed795444
SHA512

0dc6e3dea2b52935d3a3e44ef3072ed98d8625c347363e77bdb8746906b32b6ef6f2025bd8dbf6684c8d0b989c84ba9d2313bd3589d536f01ca8eceb1f845eef
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAdQ:bCDOw9aMDooc+vAe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2416-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d0000000122eb-11.dat	CryptoLocker_rule2
behavioral1/memory/292-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2416-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/292-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
292	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2416	2024-05-11_456c068dfa4bb45281b2f36f7d220fef_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 2416 wrote to memory of 292	2416	2024-05-11_456c068dfa4bb45281b2f36f7d220fef_cryptolocker.exe	28
PID 2416 wrote to memory of 292	2416	2024-05-11_456c068dfa4bb45281b2f36f7d220fef_cryptolocker.exe	28
PID 2416 wrote to memory of 292	2416	2024-05-11_456c068dfa4bb45281b2f36f7d220fef_cryptolocker.exe	28
PID 2416 wrote to memory of 292	2416	2024-05-11_456c068dfa4bb45281b2f36f7d220fef_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-11_456c068dfa4bb45281b2f36f7d220fef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_456c068dfa4bb45281b2f36f7d220fef_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:292

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
41KB

MD5
69bff9d7a370ea160e52125d7c176237

SHA1
c86ae9005f10d42d2e54a870998e600a2c544f31

SHA256
43a6f3ae0ab801b5ed6c4c46176c2920eeeb76510035f271441534ccbabe1ac2

SHA512
e0b3eb9c6e9b36f1baa4252a7dd308789ea710c9718a7febda2447aaa1258fae8a408519bb1086d5107c57d8ffa6e16b1362ae64cf12f09dd444fdabdbada0ea

Download Submit
memory/292-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/292-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/292-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2416-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2416-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2416-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2416-3-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2416-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download