a94910d1171382f4f4361af3f51693077a4964b4d200fc963c91e6ef0ddded38

Analysis

max time kernel
147s
max time network
153s
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, 11:32

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General

Target

2024-02-24_253977a01b437c514256572cc0a65d32_cryptolocker.exe
Size

50KB
MD5

253977a01b437c514256572cc0a65d32
SHA1

44f8f5e1f4a79b3c23eb258981ff9b922e0fa29f
SHA256

a94910d1171382f4f4361af3f51693077a4964b4d200fc963c91e6ef0ddded38
SHA512

91d3a64551a5ec7bc7ea46f47a92983462415e8b21ed0949c09683d5b48bd6ede391d1a6e8e82192f5905e6afaf2e73d76dfb44d404d82704f81a938bd869d5d
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIE+I:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7l

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002322d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002322d-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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	2024-02-24_253977a01b437c514256572cc0a65d32_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4348	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 216 wrote to memory of 4348	216	2024-02-24_253977a01b437c514256572cc0a65d32_cryptolocker.exe	86
PID 216 wrote to memory of 4348	216	2024-02-24_253977a01b437c514256572cc0a65d32_cryptolocker.exe	86
PID 216 wrote to memory of 4348	216	2024-02-24_253977a01b437c514256572cc0a65d32_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-24_253977a01b437c514256572cc0a65d32_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_253977a01b437c514256572cc0a65d32_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:216
- 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:4348

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
50KB

MD5
0782ddfb5e7503e81c330415f5816cdf

SHA1
bc751c776187e62a4ffd96d2f9c948ff00d83ddd

SHA256
2a29c8100311baff2666b5f5e2d7f273f7bcfeefc0072d3fca76290894ac5ebc

SHA512
d4e2a45ea9f695121c1068b174bef9ee142a132500ef7a8bd8dc1c457b8904067832b853e781e1278c5dbc141ae6905b83a2c466a524d3544fed30df7c0e6292

Download Submit
memory/216-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/216-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/216-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4348-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download