370fac9702d1ae47c9ba0c628dbbcb2be1236572622fab751843603c5f686587

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/04/2024, 07:46

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General

Target

2024-04-11_b79f88ccce7e177d3ce819b3ed109c82_cryptolocker.exe
Size

66KB
MD5

b79f88ccce7e177d3ce819b3ed109c82
SHA1

1e7b518bda3f4c73a063f70a5314957bfcdd4815
SHA256

370fac9702d1ae47c9ba0c628dbbcb2be1236572622fab751843603c5f686587
SHA512

7b29b92fc0a81914c9ceec9b6253f1012c773eebf9d4f27143c7c216f572331a4e0a9b4d7e751a4ae74aafef255d7c81968aaf493935f01ea698e3f6b4871f81
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEA:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000001ea83-13.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000001ea83-13.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	2024-04-11_b79f88ccce7e177d3ce819b3ed109c82_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
1956	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 3040 wrote to memory of 1956	3040	2024-04-11_b79f88ccce7e177d3ce819b3ed109c82_cryptolocker.exe	91
PID 3040 wrote to memory of 1956	3040	2024-04-11_b79f88ccce7e177d3ce819b3ed109c82_cryptolocker.exe	91
PID 3040 wrote to memory of 1956	3040	2024-04-11_b79f88ccce7e177d3ce819b3ed109c82_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-11_b79f88ccce7e177d3ce819b3ed109c82_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_b79f88ccce7e177d3ce819b3ed109c82_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3040
- 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:1956

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=3104 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:5876

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\hurok.exe

Filesize
67KB

MD5
51609248b53d724076a89e3b372bf2bc

SHA1
c22f583099225684b9d1ef07f2f8027f0891353f

SHA256
21ec2a67162c2f6de91c0667581f8428baf73a8ae34e938271253939e4f28d7f

SHA512
35b3e35f0d45f9e2999184205f95d2ca2acc18009bedfc8946032debfa866d54376e5fdbcc7882b51f2374a56a2d9af4b1c83fb12be840485cbec14fd9a902ee

Download Submit
memory/1956-18-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/3040-0-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/3040-1-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/3040-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download