86b4d45b152e55615698a578eb5fb76eccc56388e5d5fc29c78ed36757cec4d8

Analysis

max time kernel
88s
max time network
124s
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 14:33

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General

Target

2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe
Size

62KB
MD5

9c4ee961d2deaa0a3cbcde152e96edd8
SHA1

6485a05f8367e6f859249226fbb4513cd5f42e3f
SHA256

86b4d45b152e55615698a578eb5fb76eccc56388e5d5fc29c78ed36757cec4d8
SHA512

10c942b3e8d713540d145b84b8f8f0b77239e57593eaf582c1f7174a888c2f57e539594de5bc99a9540bda3b378072f7c8b81632f9c8b3180d7d3cfbe3cfcb31
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299d:aq7tdgI2MyzNORQtOflIwoHNV2XBFV71

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231fb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231fb-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
5752	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 6084 wrote to memory of 5752	6084	2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe	85
PID 6084 wrote to memory of 5752	6084	2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe	85
PID 6084 wrote to memory of 5752	6084	2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:6084
- 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:5752

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
62KB

MD5
a1134e1ad4c869d0ad859a6688af3961

SHA1
118980c210c5946d32a744250c3ea360a2b8b7cb

SHA256
9d13f1712ca990628f2ae4f2cc792f9b344788d60e6a37b8f6cc7a284ccdf0e1

SHA512
a622d823669f7bf26d2b0df34a0dc6ef55a65fac54fac20e293af629b9183e75395373895ce2f81708feff7f1828ee71732bcfd001566937ff411cb8b60fe958

Download Submit
memory/5752-20-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/6084-0-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/6084-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/6084-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download