905e81ae2e029848503fa26f875be611b02b6295558e14d763c7505544211a75

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27/04/2024, 21:25

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General

Target

2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe
Size

51KB
MD5

423a8fa8f5152c56164e068c01545b7f
SHA1

9729ecb7bbf0a809bf0486b604652dced860a4d2
SHA256

905e81ae2e029848503fa26f875be611b02b6295558e14d763c7505544211a75
SHA512

c22143f0e1924b1451eb833ecdfdd95c2654294a43b61a34793894c95925ebc6f337f66ab06f11c6f0b871254f46ea8d708d089bf8672b75cd4509828a7c1cf7
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAI49B:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7f

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023ab0-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023ab0-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1360	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 4880 wrote to memory of 1360	4880	2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe	83
PID 4880 wrote to memory of 1360	4880	2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe	83
PID 4880 wrote to memory of 1360	4880	2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4880
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:1360

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
51KB

MD5
22059a846e9df959ae5f6fef533bf7ba

SHA1
0e044d6407057885d595e568f90555b1b3b77abe

SHA256
4106689ef698e6c06b316e923ddf668bdfe2da9661e6bb251e9d8647fd16c24a

SHA512
42a9009d2881206767bd20d8f89fbcfac0a57e5c7f224d9fc14db65ffa3e4185e3e7f447c65da58108bc3f433d138f5ac480217b244a77b0a8b6843503ed51c1

Download Submit
memory/1360-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4880-0-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/4880-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4880-8-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download