e7b21d35298a34a0fa2e06769f490e216b2502c059f1324a1872d98220e5a021

Analysis

max time kernel
150s
max time network
144s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19-02-2024 16:23

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General

Target

2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe
Size

33KB
MD5

0f96ca6fb39f343bb4873e9cb8f268b9
SHA1

345f40d96d752d531f5cd9e1b0e74b8677f6e54a
SHA256

e7b21d35298a34a0fa2e06769f490e216b2502c059f1324a1872d98220e5a021
SHA512

fdd20bb5781ecc55b024fd6f101744762c3b5147d1bb546f276ae31eecadbed2ed115e843d97d514b5f138b810c83eb4a69db24e6aa8e76205e155967b5b363e
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3S+:b7o/2n1TCraU6GD1a4Xt9bRU7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00050000000120fb-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2324	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2408	2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2408	2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe
2324	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2324	2408	2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe	28
PID 2408 wrote to memory of 2324	2408	2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe	28
PID 2408 wrote to memory of 2324	2408	2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe	28
PID 2408 wrote to memory of 2324	2408	2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2324

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\rewok.exe

Filesize
33KB

MD5
b298cdf8d8174bdb8b5e640a60a351ba

SHA1
1b32f08d4331873f071a75272230ba353013f09f

SHA256
ee8ef9e640b0d95c55af635fa2bf0fa63a5fb50883115d541ed998a6f443004f

SHA512
abab569695c5090bc30dae3172d44e262de8faaa7a43bf2bf07d2b2e7caca769c3134e85d6d1f46410c19642151a5a2eb96a4de32eabce77b251821355352f7e

Download Submit
memory/2324-17-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2408-0-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2408-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2408-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download