3f63d46ad881aca7fe5434738594aff73c18cb78447a60c491602cd25cd88982

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
08-05-2024 04:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-08_1f0e1df98f63da05d0b032ff93f14da9_cryptolocker.exe
Size

43KB
MD5

1f0e1df98f63da05d0b032ff93f14da9
SHA1

3c182644b07f3b4334b8730d1c795be80c96181e
SHA256

3f63d46ad881aca7fe5434738594aff73c18cb78447a60c491602cd25cd88982
SHA512

1789909902c609a4b0ffcce0a58dc57a98507d0084ee74b08568c5f9e7dc9b7b175fd780f761c27ff8e623fa02ee1498be9b7689617a133157c3f1225c9a4e60
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD9HxC:X6QFElP6n+gJQMOtEvwDpjBmzDkWDtQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b22-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b22-12.dat	CryptoLocker_set1

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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-05-08_1f0e1df98f63da05d0b032ff93f14da9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4808	asih.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 4808	4604	2024-05-08_1f0e1df98f63da05d0b032ff93f14da9_cryptolocker.exe	85
PID 4604 wrote to memory of 4808	4604	2024-05-08_1f0e1df98f63da05d0b032ff93f14da9_cryptolocker.exe	85
PID 4604 wrote to memory of 4808	4604	2024-05-08_1f0e1df98f63da05d0b032ff93f14da9_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-08_1f0e1df98f63da05d0b032ff93f14da9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-08_1f0e1df98f63da05d0b032ff93f14da9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4808

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\asih.exe

Filesize
44KB

MD5
1c81e8a6f5848c5abc73329095ca272a

SHA1
b0a970d1f510958ab920d94b3de74eddc03b5cc1

SHA256
05edf0e585dc704504776d1c9ac439ebe17048fa5b07900647d1228b1ef41220

SHA512
ca9ba9820fe3776a376a8efa0d5c533705e4af1e8c03be97fcd64e2aadd40b6788768cc1128c2d0304fd635cbf671eb6acded040534be1549d2a386df041fab5

Download Submit
memory/4604-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4604-1-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4604-8-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4808-22-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4808-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download