18c67662756f0862ce649b6cc33c5af6a946d03637618b3fb95f9e995575970a

Analysis

max time kernel
143s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13-02-2024 05:50

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General

Target

2024-02-13_567eb4fce3402156a2d36f4640ece2bd_cryptolocker.exe
Size

49KB
MD5

567eb4fce3402156a2d36f4640ece2bd
SHA1

debc3687bd4ca68ba9bafdd20e20e4cafd2d403b
SHA256

18c67662756f0862ce649b6cc33c5af6a946d03637618b3fb95f9e995575970a
SHA512

cfd2e08c42f6fc743920b43baf2e8057e455a257f0e4cc249c83ee63882023b0d7b3afd9d2526d9b0717f3db9097aadef696522530848817e12eb8ff346b9b7c
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIk:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023228-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023228-12.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-13_567eb4fce3402156a2d36f4640ece2bd_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3268	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 548 wrote to memory of 3268	548	2024-02-13_567eb4fce3402156a2d36f4640ece2bd_cryptolocker.exe	85
PID 548 wrote to memory of 3268	548	2024-02-13_567eb4fce3402156a2d36f4640ece2bd_cryptolocker.exe	85
PID 548 wrote to memory of 3268	548	2024-02-13_567eb4fce3402156a2d36f4640ece2bd_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-13_567eb4fce3402156a2d36f4640ece2bd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_567eb4fce3402156a2d36f4640ece2bd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:548
- 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:3268

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
49KB

MD5
67564309e57be7898d6f0a3652fb03fb

SHA1
c929b37c6f76b552df875101e972f71887154cc5

SHA256
95e02f23c0a4ed221d8fce1460faeb10498dd7ec5a95feee06d790cad9459775

SHA512
e5c21ff7984ba0be9388462b51df93bb9bb3c9bc8ef8866d22741fd4980a6830dcf2ebf4222dc31a24f9ad684991bc0e018d5846f37374397eb988ecdc8de81a

Download Submit
C:\Users\Admin\AppData\Local\Temp\hurrok.exe

Filesize
1KB

MD5
1efc8f994c714926f0162e8198a7daa7

SHA1
33d6b6fa8666a0eeb55b8a8c6d9b4df2c2c4a8da

SHA256
80b9915b1301a864b1e1f647d0c5e86815e99ca5dfa82b200cbed2285e1d4220

SHA512
387bb31cadb35f23f483236a3c38e5383ad5dfead076d6069089ce0a19b5a32f02fa269e397ca900702176c44b888fd2512dbd36bf7b894d83a01a61e6bb0e37

Download Submit
memory/548-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/548-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/548-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3268-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download