832bce613901cd78266e364cec91273f9971c08e63786df6249950bd7386bf89

Analysis

max time kernel
151s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10-06-2024 10:43

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General

Target

2024-06-10_072304b5bf618aeca9f06589d9ff8b8b_cryptolocker.exe
Size

31KB
MD5

072304b5bf618aeca9f06589d9ff8b8b
SHA1

d32b6a47f8d9fd8654e0c011cbcfe1e45836d35d
SHA256

832bce613901cd78266e364cec91273f9971c08e63786df6249950bd7386bf89
SHA512

baf4ea6e944b0e39195b1d201cb819c1c1fd65b7536a234c079efa6e83afe420dddd80accb82ad8a56b243353c8a433815248891724d9ec89e25c3772ea304ee
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXt:bG74zYcgT/Ekd0ryfjM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3484-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b00000002324f-13.dat	CryptoLocker_rule2
behavioral2/memory/3996-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3484-19-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3996-27-0x0000000008000000-0x000000000800A000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-06-10_072304b5bf618aeca9f06589d9ff8b8b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3996	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 3484 wrote to memory of 3996	3484	2024-06-10_072304b5bf618aeca9f06589d9ff8b8b_cryptolocker.exe	91
PID 3484 wrote to memory of 3996	3484	2024-06-10_072304b5bf618aeca9f06589d9ff8b8b_cryptolocker.exe	91
PID 3484 wrote to memory of 3996	3484	2024-06-10_072304b5bf618aeca9f06589d9ff8b8b_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-10_072304b5bf618aeca9f06589d9ff8b8b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_072304b5bf618aeca9f06589d9ff8b8b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3996

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=3896 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:3128

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

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Downloads

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

Filesize
32KB

MD5
bbc212cf6dd254eeb3d6f3608ce9c144

SHA1
1237cb6d1d30093f0d465ca7be567430cfcce217

SHA256
2471760a24f1d49b1f9a008ece13f86c0b58844a86205731bc91d4b52e0868e9

SHA512
eeaa51a69d530e531071cd503aa320f0126b8322aed2be1a11cd42d5592d4c4d9b1fa54870db97a56f04bd115da122dd909666553734212e1dc4cbfb774e7fda

Download Submit
memory/3484-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3484-1-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/3484-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/3484-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3484-19-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3996-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3996-20-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3996-21-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3996-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download