bd4a52f2e873579ebcd49fbfaf878c27395a59006b466fe55c5b7707fe62c43b

Analysis

max time kernel
135s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 12:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-02-04_5a11e24d6c7e1c2348047777671f26a3_cryptolocker.exe
Size

48KB
MD5

5a11e24d6c7e1c2348047777671f26a3
SHA1

1bd14d2b8774cde052d7888861f745362f2dc69f
SHA256

bd4a52f2e873579ebcd49fbfaf878c27395a59006b466fe55c5b7707fe62c43b
SHA512

510fefeb89514589f90aef0ebf53392065418efa9f0f10863df7686c83b167f6dc8b78be07a7cf3cec078d165a96984dc32f2a7a9db504b4fc88ef5aaffe8c31
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAId:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023108-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023108-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-04_5a11e24d6c7e1c2348047777671f26a3_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3156	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 1608 wrote to memory of 3156	1608	2024-02-04_5a11e24d6c7e1c2348047777671f26a3_cryptolocker.exe	83
PID 1608 wrote to memory of 3156	1608	2024-02-04_5a11e24d6c7e1c2348047777671f26a3_cryptolocker.exe	83
PID 1608 wrote to memory of 3156	1608	2024-02-04_5a11e24d6c7e1c2348047777671f26a3_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-04_5a11e24d6c7e1c2348047777671f26a3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_5a11e24d6c7e1c2348047777671f26a3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1608
- 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:3156

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
49KB

MD5
ad281b87e30e5190b2c367d4049e933e

SHA1
e73dc692804feb82212047e4208a79da74a729f6

SHA256
498164e3e17a80c3cc8df2606f75edde7b6c2600046707bd23ad4febe2d9106e

SHA512
d7d47fb5c70f1eb620ac1726a1d5086cb904ae5f850992a3ce8733555e0bcd8004e2ae31f19835d90afdb51366f67b37aa14eea6300e6e6ad5646c52a4755fe9

Download Submit
memory/1608-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1608-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1608-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3156-25-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download