b23a5bf4d7a781ec26286adc2c027b2c83f4ac0844a8dcacbe3066b1e1df1558

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 20:04

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-21_7e1fecdc5c8dbe1a5c72d6d679814efe_cryptolocker.exe
Size

389KB
MD5

7e1fecdc5c8dbe1a5c72d6d679814efe
SHA1

789fedff793551817e57bec7c7e8d29a2f51c1de
SHA256

b23a5bf4d7a781ec26286adc2c027b2c83f4ac0844a8dcacbe3066b1e1df1558
SHA512

5394c1000aa68e046ebe78750fe412c0cb3af74e7c2c20af158eac9a1894d962cb243a5ede27c1f3aa7b2f58b21881f347fe6b19913d5c19118dbdd136a718c3
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXG:nnOflT/ZFIjBz3xjTxynGUOUhXG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-21_7e1fecdc5c8dbe1a5c72d6d679814efe_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2920	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 4604 wrote to memory of 2920	4604	2024-04-21_7e1fecdc5c8dbe1a5c72d6d679814efe_cryptolocker.exe	87
PID 4604 wrote to memory of 2920	4604	2024-04-21_7e1fecdc5c8dbe1a5c72d6d679814efe_cryptolocker.exe	87
PID 4604 wrote to memory of 2920	4604	2024-04-21_7e1fecdc5c8dbe1a5c72d6d679814efe_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-21_7e1fecdc5c8dbe1a5c72d6d679814efe_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_7e1fecdc5c8dbe1a5c72d6d679814efe_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2920

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
389KB

MD5
4b3d47a3157c92382f2d1bbcc59503ed

SHA1
19a39fcd313042eb13765fa4d0777e03f24e3652

SHA256
bc5cecbf1844648651aac9fb5a9553a80fed2402582c8e10e634be8ef35a6a31

SHA512
15e32a75f1d5e09a42a0e999855bff9de5538a2f418823c45570aeac181f2e5a053b47f79122ccdfd8ef178790142dfb8de0b61a2a2e3d30439dc23c1da6adc6

Download Submit
memory/2920-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2920-18-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/4604-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4604-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4604-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download