66fa189e305e0c41c1608530ca43ac695a63794a4f5c8b35181896724ef8dc8c

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23/04/2024, 00:59

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General

Target

2024-04-23_b7d0586fa0930727a392a6e831aa310e_cryptolocker.exe
Size

50KB
MD5

b7d0586fa0930727a392a6e831aa310e
SHA1

1d7db160340d894ba19b6db96f8f04fb0a04f8f7
SHA256

66fa189e305e0c41c1608530ca43ac695a63794a4f5c8b35181896724ef8dc8c
SHA512

b980c077e631fecdc2dfb779b34dbb308209812995515065fd6853452dfee2437bb6ca415b7869032e1faba91d7e3728f913e29cebca98b282238c54c4fafff0
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIm:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7x

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-23_b7d0586fa0930727a392a6e831aa310e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
5092	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 2128 wrote to memory of 5092	2128	2024-04-23_b7d0586fa0930727a392a6e831aa310e_cryptolocker.exe	86
PID 2128 wrote to memory of 5092	2128	2024-04-23_b7d0586fa0930727a392a6e831aa310e_cryptolocker.exe	86
PID 2128 wrote to memory of 5092	2128	2024-04-23_b7d0586fa0930727a392a6e831aa310e_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-23_b7d0586fa0930727a392a6e831aa310e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_b7d0586fa0930727a392a6e831aa310e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2128
- 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:5092

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
2f3cfc434f89d68cd7888e6799c28508

SHA1
1ce801902f941ca55c3ed73f7c797928bfe6f6ce

SHA256
5802f19196f4d0876955cdfc789f5ef61c50a2e940b6d56bdcd0caba048d12ba

SHA512
40ecd271770cbb1cd87019e186df05792de4ab33d350bd44764d88c6c42bb0a5f52b4d17675e1922ab3ade0440c1307b9b136847ea2f369097ff1553441b36a7

Download Submit
memory/2128-0-0x0000000002030000-0x0000000002036000-memory.dmp

Filesize
24KB

Download
memory/2128-1-0x0000000002030000-0x0000000002036000-memory.dmp

Filesize
24KB

Download
memory/2128-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5092-21-0x0000000001FB0000-0x0000000001FB6000-memory.dmp

Filesize
24KB

Download