20944df10f4b5760c54285eef940babfd466aabed3602d18b9081747fdf6da34

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-05-2024 03:48

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General

Target

2024-05-02_156972dc9c353f6d145302ec5117ba24_cryptolocker.exe
Size

36KB
MD5

156972dc9c353f6d145302ec5117ba24
SHA1

76994885303f2da16caab4c06859915deafb8423
SHA256

20944df10f4b5760c54285eef940babfd466aabed3602d18b9081747fdf6da34
SHA512

f311bf1889ae0dc3eee2249311129243e08cd59558da804af1ce2da32b1488227776c139e1cabd1bab72d0262479d5816318b7858cf4393d01c5e6530698c689
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qE4kb6oY26ug:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36F

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012350-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2020	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2860	2024-05-02_156972dc9c353f6d145302ec5117ba24_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
2860	2024-05-02_156972dc9c353f6d145302ec5117ba24_cryptolocker.exe
2020	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 2020	2860	2024-05-02_156972dc9c353f6d145302ec5117ba24_cryptolocker.exe	28
PID 2860 wrote to memory of 2020	2860	2024-05-02_156972dc9c353f6d145302ec5117ba24_cryptolocker.exe	28
PID 2860 wrote to memory of 2020	2860	2024-05-02_156972dc9c353f6d145302ec5117ba24_cryptolocker.exe	28
PID 2860 wrote to memory of 2020	2860	2024-05-02_156972dc9c353f6d145302ec5117ba24_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-02_156972dc9c353f6d145302ec5117ba24_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_156972dc9c353f6d145302ec5117ba24_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2860
- 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:2020

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
36KB

MD5
4acd6938f22eb7cca02bb8e60f354f61

SHA1
8ed364e4fa43aa436ce6e43588d496860561e5a6

SHA256
8b4c17cff1bb0f6b6582d04c71a180d85a3a48632733962a7cec2e206d08681e

SHA512
06179f391d4ced2fb3553237d264b5840045d2dda12d369edf37931b1f544f689130ac3fdfde307b419c17212f2ad4d684d80b5e782972d68c6e73fd797d2971

Download Submit
memory/2020-23-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2860-8-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2860-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2860-0-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download