2a7dc357bd6de10de98eb520c61b01506636ec80c083611caf1f7e302fe805ad

Analysis

max time kernel
146s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 01:23

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General

Target

2024-02-19_12b2d4ca69bd7da9ab9ec41262984fc0_cryptolocker.exe
Size

49KB
MD5

12b2d4ca69bd7da9ab9ec41262984fc0
SHA1

90e8fe54946cca58c80dc6cc8afa696556ac3f51
SHA256

2a7dc357bd6de10de98eb520c61b01506636ec80c083611caf1f7e302fe805ad
SHA512

576cd2a3720c6f80626249ce8acd685448806c93554459b0ccf647212b234b4ad4174d5ed247cf0e977cb8db024c9eb6cba3458c4d2b38e8143908897be24bb0
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAI0:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023173-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023173-12.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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-19_12b2d4ca69bd7da9ab9ec41262984fc0_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1456	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 3780 wrote to memory of 1456	3780	2024-02-19_12b2d4ca69bd7da9ab9ec41262984fc0_cryptolocker.exe	86
PID 3780 wrote to memory of 1456	3780	2024-02-19_12b2d4ca69bd7da9ab9ec41262984fc0_cryptolocker.exe	86
PID 3780 wrote to memory of 1456	3780	2024-02-19_12b2d4ca69bd7da9ab9ec41262984fc0_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-19_12b2d4ca69bd7da9ab9ec41262984fc0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_12b2d4ca69bd7da9ab9ec41262984fc0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3780
- 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:1456

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
2524cd2cbc460239efc8cf136affca86

SHA1
d2ac67a26ced1d7b02d6837a5d91a1f799505d9e

SHA256
406e8b2643796dc5886ae2395db1d17c2f665cb7a12a1bb4ddc0e5498c903614

SHA512
1b777b1da41bb56da6e0ed81fa9fd0bbba5649096fcab9d8d31ffca05f4ab078720439a6e5794bc3fe4c619f76c4525d013df00e27f3afc588ce775e274197bb

Download Submit
memory/1456-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3780-0-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/3780-1-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/3780-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download