6b74e53acc640e97bf3d2cacbc485961352fc72c39126a8a2c72804e7112246d

Analysis

max time kernel
141s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 15:02

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General

Target

2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe
Size

62KB
MD5

1c151e929a26c6c145752b912b46a298
SHA1

a18f0a4f8d81b11ca0f9604b12ce113a014a2006
SHA256

6b74e53acc640e97bf3d2cacbc485961352fc72c39126a8a2c72804e7112246d
SHA512

7bc98ed887bab7098672109b54265e0a3f7dfe0afb26c4233ef7c39a5a0a5dc8459627e918a8c4743e481d77d09a96521f692e990711696c5296171281a064a9
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293ol:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7Y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023261-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023261-12.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	2024-03-10_1c151e929a26c6c145752b912b46a298_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
2648	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 1596 wrote to memory of 2648	1596	2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe	98
PID 1596 wrote to memory of 2648	1596	2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe	98
PID 1596 wrote to memory of 2648	1596	2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1596
- 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:2648

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=1044 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:3644

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
63KB

MD5
617548072d9907c89479f887d9855368

SHA1
7ddadf8d6217d7976dc37ae47b9406825316c510

SHA256
6dd154eead3e37a553f533bc456bfd86d8c6a2149226829080684271b2b7d989

SHA512
cb92db242a399dbc01015c1175a15027a646157c339cea63744fc5a6985e2a6e0881b3e7e65ee5eab2de42d410d6515eef929902c42a6e7dcd825e8fcf2adfe3

Download Submit
memory/1596-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1596-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1596-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2648-20-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download