8444aac3e26e2372b9395678fccd6edcd43afe13eb2dc16b4b6c2ae7491c4efe

Analysis

max time kernel
144s
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
04-04-2024 22:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe
Size

66KB
MD5

b6741746a8e1ddfcd73527c366089561
SHA1

0831612caa518987331617bdf9c0a30330a81d66
SHA256

8444aac3e26e2372b9395678fccd6edcd43afe13eb2dc16b4b6c2ae7491c4efe
SHA512

a270b6e2210c019cc162463df1c5630b6341f20ee7dabb572832da0a0fa2af1fa5bb8c26e1047f61de68de739d3002a606a2374654ac1776e2774d591c996427
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEs:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000016fa5-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000016fa5-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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	2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3160	hurok.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 3092 wrote to memory of 3160	3092	2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe	95
PID 3092 wrote to memory of 3160	3092	2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe	95
PID 3092 wrote to memory of 3160	3092	2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3092
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3160

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=4092 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:4452

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\hurok.exe

Filesize
66KB

MD5
ce8fbba8df7129b962f08ab23a07b128

SHA1
3222574696d6159de0a48f5ebb6b52da7fb2772e

SHA256
cf07d29444a810f0866328bc85262951bac486e78fe6a47a35cd3ae81c5b9612

SHA512
0bcd01a0415416d948bdc5e5e83cd77c3526b89b8b9e712032e6b7a79f4149f5695f202f42649d0f1618b08f49cab0b55ec6b108b5e7624ff88d3ec661358f39

Download Submit
memory/3092-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3092-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3092-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download