fbc74f3416e98e68b138547ce502a206450232b0febd895a2bf592675d9d2e39

Analysis

max time kernel
150s
max time network
151s
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, 07:56

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General

Target

2024-04-11_efada5c6e1d8103d7a98ff6fda39bfa6_cryptolocker.exe
Size

36KB
MD5

efada5c6e1d8103d7a98ff6fda39bfa6
SHA1

a5c760d4739bd3c8168828c536c746c88d6e8f83
SHA256

fbc74f3416e98e68b138547ce502a206450232b0febd895a2bf592675d9d2e39
SHA512

f70bfcc730cad377a2b51b7019c2559f936db9e2a1e01cc7d6035a7d1ba4427dba327ac499ca9352c935a3c59562b7bfd1a7a9dc3919d5af3814c7c5611c9880
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunIVpeNs23mAA6lmRgy:bA74zYcgT/Ekd0ryfjPIunqpeNswm9my

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023209-12.dat	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_efada5c6e1d8103d7a98ff6fda39bfa6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2880	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 1332 wrote to memory of 2880	1332	2024-04-11_efada5c6e1d8103d7a98ff6fda39bfa6_cryptolocker.exe	86
PID 1332 wrote to memory of 2880	1332	2024-04-11_efada5c6e1d8103d7a98ff6fda39bfa6_cryptolocker.exe	86
PID 1332 wrote to memory of 2880	1332	2024-04-11_efada5c6e1d8103d7a98ff6fda39bfa6_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-11_efada5c6e1d8103d7a98ff6fda39bfa6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_efada5c6e1d8103d7a98ff6fda39bfa6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1332
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2880

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
37KB

MD5
b37971c624139fc8d882de0ab9b625c3

SHA1
69fdcc2156cd322de7f774acc9d30d5c6e6da467

SHA256
b85a969a52c691696f74aab1caa9592fb1d8b2c6bb26479cd8aaade6c2f29f05

SHA512
09f47bb42f907e12700701db06b9e5cc97e5168b357ef795e48d06480ddab915eae8b885f5b31d104bfed83e4bf9bc4c1e657f0a6acebc6f782670a493e44610

Download Submit
memory/1332-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1332-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1332-2-0x00000000023C0000-0x00000000023C6000-memory.dmp

Filesize
24KB

Download
memory/2880-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2880-23-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download