4f24ea23e43d3addf5850b45aef860148a222df655fa774b93d71f37d87280ed

Analysis

max time kernel
113s
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
28-01-2024 08:31

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General

Target

2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe
Size

33KB
MD5

62a92a56385cc4a47520a316d197fe53
SHA1

c750c48e8831996d3423363e0611c981f92e6784
SHA256

4f24ea23e43d3addf5850b45aef860148a222df655fa774b93d71f37d87280ed
SHA512

236b3302977bc64690eb0a4d2ad8310046d85b050cf35e5c09debb7f7a12cfdb146c62c0c5047268052ed5ea556304cfacc090de223dcc3be0f7b714373a904a
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wmT:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023163-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023163-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4392	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 2040 wrote to memory of 4392	2040	2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe	89
PID 2040 wrote to memory of 4392	2040	2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe	89
PID 2040 wrote to memory of 4392	2040	2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2040
- 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:4392

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
33KB

MD5
eb942a480c30d813209520952eafe3d0

SHA1
649f49a75164ea66f07206a77281bd47f8ac3190

SHA256
070e8ee67cf0ec359bbad2435aeccf288ce6ad61fab69ebb17be06a37da4c3eb

SHA512
7bb233bb0ec5f251c8d2927d5d84e1a09bb125d172f9ab61f71163a28f175c46634be5a193616adb77984f8315e4e21bd32be66403d7808450ccf6887dc5c116

Download Submit
memory/2040-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2040-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2040-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4392-21-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download