2f7559fc6286c6fc51de1291c52b11a53252c9f4aa466e5f8e218eb307d04717

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
13/03/2024, 18:24

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-03-13_137b757bfd5e008bbd3dcf035c3d93ac_cryptolocker.exe
Size

386KB
MD5

137b757bfd5e008bbd3dcf035c3d93ac
SHA1

253cbde1324e34b5b0244675f1f61bceab2025c4
SHA256

2f7559fc6286c6fc51de1291c52b11a53252c9f4aa466e5f8e218eb307d04717
SHA512

750bafdda1c67ecbfa3c137062beaf97d5a8f9d5fefc8f5908d6a5ae48618105113cbdd9849b5d84b4b555e106441a33e741ca0cb77b09ad95dabcaf4c3b2f69
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzX8:nnOflT/ZFIjBz3xjTxynGUOUhX8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-13_137b757bfd5e008bbd3dcf035c3d93ac_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1904	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 4876 wrote to memory of 1904	4876	2024-03-13_137b757bfd5e008bbd3dcf035c3d93ac_cryptolocker.exe	88
PID 4876 wrote to memory of 1904	4876	2024-03-13_137b757bfd5e008bbd3dcf035c3d93ac_cryptolocker.exe	88
PID 4876 wrote to memory of 1904	4876	2024-03-13_137b757bfd5e008bbd3dcf035c3d93ac_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-13_137b757bfd5e008bbd3dcf035c3d93ac_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_137b757bfd5e008bbd3dcf035c3d93ac_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4876
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1904

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

Loading Replay Monitor...

Downloads

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

Filesize
386KB

MD5
d64a4c950b684322a7d8a20aea0efa18

SHA1
0a3194afbb7d0def37fcfb2fe46ed293012e1269

SHA256
5fe22626924d6c8811361e99cff50b1fd88087782979a2203ffba6167240ddd1

SHA512
969fb8c5e06a610bd3db9740cfa7bb4e17f9b3fe56ceb5a661ecb898ff844ea5c5ff53a6dfcfb444743dd5a79d447207710a162ea1c83be5d920394a4c13de71

Download Submit
memory/1904-18-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/1904-17-0x00000000020B0000-0x00000000020B6000-memory.dmp

Filesize
24KB

Download
memory/4876-0-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/4876-1-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/4876-2-0x0000000003140000-0x0000000003146000-memory.dmp

Filesize
24KB

Download