eb8f88de492c65eae236fb2465e1b1e2831778b298747430c23bfc1f101852b6

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/04/2024, 07:34

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General

Target

2024-04-11_47b2303ad06e73500850c9d912768c2b_cryptolocker.exe
Size

30KB
MD5

47b2303ad06e73500850c9d912768c2b
SHA1

dca3fe2dc51586125a9fad7d65b0f4e4fa673b4d
SHA256

eb8f88de492c65eae236fb2465e1b1e2831778b298747430c23bfc1f101852b6
SHA512

e66e49f36dc434e7d0f007f91ed3e2c9c1975dfe4c5b22df99fbedd74a884e3333121274b3fa9dac10751a6d33aea798bd2dbf7c6aba6fe86a3ece33ee436b92
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGT9UB:bG74zYcgT/Ekd0ryfjCB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/720-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b00000002320a-13.dat	CryptoLocker_rule2
behavioral2/memory/720-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4184-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4184-27-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-04-11_47b2303ad06e73500850c9d912768c2b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4184	hasfj.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 720 wrote to memory of 4184	720	2024-04-11_47b2303ad06e73500850c9d912768c2b_cryptolocker.exe	85
PID 720 wrote to memory of 4184	720	2024-04-11_47b2303ad06e73500850c9d912768c2b_cryptolocker.exe	85
PID 720 wrote to memory of 4184	720	2024-04-11_47b2303ad06e73500850c9d912768c2b_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-11_47b2303ad06e73500850c9d912768c2b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_47b2303ad06e73500850c9d912768c2b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:720
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
30KB

MD5
507bba1d952171b8c83f137b5c45f996

SHA1
8894fc57aa12f5ac67095e85106075ed944c750a

SHA256
141d6c591ff819a14cf80bc070347b02c63f75c8695ae2f374769aa7631e3ccb

SHA512
43b9e677aa7f24896787877f643f25eb5b041e6ba5d2641dbf118bb03000e378fc6d01881272e44e8f986b5aa5263c438e0e97c738881e7a7b1dd2b379333af6

Download Submit
memory/720-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/720-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/720-3-0x0000000002380000-0x0000000002386000-memory.dmp

Filesize
24KB

Download
memory/720-2-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/720-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4184-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4184-22-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4184-20-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/4184-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download