a2ce20db76b27b2ab39d2c1ae156f4ef1e17af5bb33e13436bdfde5042fde78b

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03-02-2024 18:25

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General

Target

2024-02-03_5be069f44d73a07bf7015d8724041941_cryptolocker.exe
Size

48KB
MD5

5be069f44d73a07bf7015d8724041941
SHA1

c8e5fc69ac0184628ad204f5631a4d59690eaf41
SHA256

a2ce20db76b27b2ab39d2c1ae156f4ef1e17af5bb33e13436bdfde5042fde78b
SHA512

75878f7f436bae18b12c5146480abd9663581d2565921d875a66574891d05b62801c5e8a2913fae7e197633a0d48b062cc207efa4f1b509f526bb655d8e29620
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIQ:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7T

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023201-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023201-12.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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-03_5be069f44d73a07bf7015d8724041941_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2188	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 1892 wrote to memory of 2188	1892	2024-02-03_5be069f44d73a07bf7015d8724041941_cryptolocker.exe	84
PID 1892 wrote to memory of 2188	1892	2024-02-03_5be069f44d73a07bf7015d8724041941_cryptolocker.exe	84
PID 1892 wrote to memory of 2188	1892	2024-02-03_5be069f44d73a07bf7015d8724041941_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-03_5be069f44d73a07bf7015d8724041941_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_5be069f44d73a07bf7015d8724041941_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1892
- 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:2188

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
ed2945f52b144f2e2383973ee86256db

SHA1
6c5af650a4dc4c1e0db27aaa6c1324de2fd5f5e8

SHA256
6da74e80551cbc020ec9f67e1efe04026381a42f09cd9305ba8e8a36c08fe411

SHA512
f475ede50651a34f27595ec5e26388917150cb69b07308f3791c37ff87633b577be61ae3edbd9a92838904c6edf3119eb9385c2ea801baaf681963df196098ff

Download Submit
memory/1892-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1892-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1892-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2188-25-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download