fca4deedde664c1283d066c1b9b827355cd50043326f8d14237a400290554b4c

Analysis

max time kernel
145s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2024, 07:39

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General

Target

2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe
Size

61KB
MD5

b78763c219d2efdf85c3a74a1a427752
SHA1

bd20c7de0ab79790a692d3757f238b70b6babc97
SHA256

fca4deedde664c1283d066c1b9b827355cd50043326f8d14237a400290554b4c
SHA512

4eee87ad9de1e36086f59b4210ff781772a083f6eefe64556cf78208e1225351f498a8465d496988db147fb354a1d59e18f55f5767b9b268adad327124a19b57
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSy:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320a-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3656	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 2960 wrote to memory of 3656	2960	2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe	87
PID 2960 wrote to memory of 3656	2960	2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe	87
PID 2960 wrote to memory of 3656	2960	2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2960
- 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:3656

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
7e9683afc925ac058ddd6cabe2566a82

SHA1
a5ed1a0f9145a56d4251feda11a25bb4133d525c

SHA256
4b15705aa4703ef5f5afb0350ae13d03db4ad1c4edf428aed3dd0af0ed698128

SHA512
5877318a3194e73b0eaf5dc35a01214e1dbec83befc66a01fe1574c164ac8c101f84ef304da932c1ee1b82d4c2b1034ff2ce648a42919c678413a141e0844c7d

Download Submit
memory/2960-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2960-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2960-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3656-23-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download