434d921d35e1b54b79c1b55312d8e813294d30b92a0f52a6b557ff53cb8ab77b

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30-05-2024 06:34

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General

Target

2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe
Size

48KB
MD5

4fcf77872273dc403ef565af0f0b59c4
SHA1

fe602fd5651215fd0073995309a358d19fa8d191
SHA256

434d921d35e1b54b79c1b55312d8e813294d30b92a0f52a6b557ff53cb8ab77b
SHA512

2ccb332638971ca342d02b536446a00901b281e6a7afa89a1902a75a11cbddc7f7e796cb25ba76bb9d45b464ac44f8397a3c9f170d9936830f07432a33faf5c1
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x5hjatsh7:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7e

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000233b7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000233b7-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4540	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 3440 wrote to memory of 4540	3440	2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe	82
PID 3440 wrote to memory of 4540	3440	2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe	82
PID 3440 wrote to memory of 4540	3440	2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3440
- 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:4540

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
48KB

MD5
ba69c9fa6b697270687a0a78efdf3685

SHA1
90f8a7761c363bc3cd05a41a882f523e49908fc4

SHA256
e10f3c200fd1dd22572422d30935e5924038e0a8e6f47b8cb118fda5ab4c1e69

SHA512
112bf6b186cd8f936324f188ff2d96f533c75653b719ae0e87ecb1c44d8af884371644e1bcc90d043d1a8f2ab64fe8e26c491d96def59a29486ab8e71c8cef3a

Download Submit
memory/3440-0-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/3440-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3440-7-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/4540-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download