3787c07d130471279099289494d4a58f540361286886feb711adb409bddca600

Analysis

max time kernel
92s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 13:33

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General

Target

2024-02-24_52cd5e22d42b7f3d275a9443da48dcae_cryptolocker.exe
Size

49KB
MD5

52cd5e22d42b7f3d275a9443da48dcae
SHA1

3c02f5a8e86287d269880f8e7b39db92b5c51245
SHA256

3787c07d130471279099289494d4a58f540361286886feb711adb409bddca600
SHA512

9bc962e85e36f040a8290f9534cfa5b5042ff963819d414cbc3cdba182c496d31462fde39f4684350f4969da7aaee02b1eac38e2f077455d2448a154dac3a01e
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIX:aq7tdgI2MyzNORQtOflIwoHNV2XBFV78

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	2024-02-24_52cd5e22d42b7f3d275a9443da48dcae_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1008	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 2148 wrote to memory of 1008	2148	2024-02-24_52cd5e22d42b7f3d275a9443da48dcae_cryptolocker.exe	90
PID 2148 wrote to memory of 1008	2148	2024-02-24_52cd5e22d42b7f3d275a9443da48dcae_cryptolocker.exe	90
PID 2148 wrote to memory of 1008	2148	2024-02-24_52cd5e22d42b7f3d275a9443da48dcae_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-24_52cd5e22d42b7f3d275a9443da48dcae_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_52cd5e22d42b7f3d275a9443da48dcae_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2148
- 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:1008

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
49KB

MD5
876116656386bc327f539758436b551f

SHA1
54fcfd237fe9309b86a91ef4635d556781e2db2f

SHA256
75ecb8f3a0e8f498d14985e755914de37fa40c288212d87bb948c3152989def7

SHA512
4dd165480667968e2bdfec8c0b7979efc8dfec831c9bbed3a2f1b99fb65d99a7d35b86f4ce2fa6359866e0b2d8d3260cdb41bb9f7f6e1340cb5aaa4155f07ea5

Download Submit
memory/1008-21-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2148-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2148-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2148-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download