fbbd66859476c2b59920583eb6d5141f8c8850bd1090437cbbc75a5039eef9b9

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/04/2024, 03:47

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe
Size

32KB
MD5

68f4139dd96d306f12d2d4bffc7ac25f
SHA1

753e5506fe6a0863be2b44b41d2b986c240f14f2
SHA256

fbbd66859476c2b59920583eb6d5141f8c8850bd1090437cbbc75a5039eef9b9
SHA512

18b67b95de8a87abaf1577d73f5584e0b4d54d714e8f5419b921919f177b58333c92c6bd6eba1694f1d83116d27d8b1b3588aebaab7205613f0c5d6bb5baf92b
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcs8bq:b/yC4GyNM01GuQMNXw2PSjSKkc9bq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002324a-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4196	retln.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 772 wrote to memory of 4196	772	2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe	91
PID 772 wrote to memory of 4196	772	2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe	91
PID 772 wrote to memory of 4196	772	2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:772
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4196

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4076 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
1⤵
PID:3364

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\retln.exe

Filesize
32KB

MD5
4fa05320af4568b3fa8c47df21262f62

SHA1
5e0694e082f8a0c0d8ec5c4f204c328f0b61e14c

SHA256
0024dd558245448c70b0b02e086d0f74c32687f4462833c2f081e96c69d7a5c3

SHA512
bde5986f96fcfb6059363d6b5ae7d2f82941b6012ed7a37e75ec985152ec4f1d25585656fe6c8844b19f5926b5dbbb0c34922ef77121fe4a5157baff7a92d5f9

Download Submit
memory/772-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/772-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/772-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4196-20-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download