79da46a5d8597eef1b46b70b2000e4330c6a5a50bade71e8e4ee75f64454a8f8

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2024, 00:24

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe
Size

44KB
MD5

5d823dd093c392e8a621f92859b795bd
SHA1

1b3f79d485f26a5d10d0358a286692788820995e
SHA256

79da46a5d8597eef1b46b70b2000e4330c6a5a50bade71e8e4ee75f64454a8f8
SHA512

2dc177b7b8d9fa38f2a46bcfef2ecf187fb665cf2cf82aff0c054c8c18fc6c2625fef573c0540cf9f318a1f37a5eb9f61cec13b1ce84ac0f48521f8f525a6841
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIDk:bm74zYcgT/Ekn0ryfjvk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4936-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000500000002326f-13.dat	CryptoLocker_rule2
behavioral2/memory/4968-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4936-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4968-27-0x0000000008000000-0x000000000800D000-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4968	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 4936 wrote to memory of 4968	4936	2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe	83
PID 4936 wrote to memory of 4968	4936	2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe	83
PID 4936 wrote to memory of 4968	4936	2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4968

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
45KB

MD5
538a79fdf25f1ea87af9015f2c3de8db

SHA1
7b964253672ce161eacad5b1463914d90c084aab

SHA256
2e174c46be27643f0c237dffc1f3e4bdfead9156a00a42beeeb362a53ef9ac97

SHA512
10563e68c7eb501aef8b081c60969cfca0261784f45b4fe6dc475dadcc97b5b1e07273800aa943fcd92b776b169b73a4be49c8b1241abc2829aa4ec77c3a7492

Download Submit
memory/4936-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4936-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4936-9-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4936-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4936-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4968-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4968-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4968-26-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4968-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download