1147391fe9f8620caa5574d8989e6356ec6eafc0aba9a71cb0f82a6a5cc14792

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
05-05-2024 02:21

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General

Target

2024-05-05_739c377f72a4da329d9acd7b3a14b45f_cryptolocker.exe
Size

30KB
MD5

739c377f72a4da329d9acd7b3a14b45f
SHA1

d7deac08d46c5b966decb654afa59bdd612594ec
SHA256

1147391fe9f8620caa5574d8989e6356ec6eafc0aba9a71cb0f82a6a5cc14792
SHA512

19f530978d3ae35a6e5b9536ae118bfa01e05679a1f7a0af54008699bbfb8ab109758d42819dc90ad44ae10f8b0e03473334bf359900eada882bdbae57513b9e
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNf8:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023298-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023298-12.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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-05_739c377f72a4da329d9acd7b3a14b45f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4192	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 3968 wrote to memory of 4192	3968	2024-05-05_739c377f72a4da329d9acd7b3a14b45f_cryptolocker.exe	83
PID 3968 wrote to memory of 4192	3968	2024-05-05_739c377f72a4da329d9acd7b3a14b45f_cryptolocker.exe	83
PID 3968 wrote to memory of 4192	3968	2024-05-05_739c377f72a4da329d9acd7b3a14b45f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-05_739c377f72a4da329d9acd7b3a14b45f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-05_739c377f72a4da329d9acd7b3a14b45f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3968
- 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:4192

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
30KB

MD5
63824704e7b3061cc06dc6cb24745e5f

SHA1
837838536f8240296c1564eac7ece82d18bd24dc

SHA256
e860b7ec33e3b6ba5c5a89ae8c0c4dfef3d48faeb32701faf3512c587e681d07

SHA512
4ca0d427110b53ecbb40dba57f88071625b58ade713b2d55c1b7715caae1c0a083da639b0ccde3145eda62ea114c2496cd3331ec349fa189b46fb97f2c08d25d

Download Submit
memory/3968-0-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3968-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3968-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4192-25-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download