3d34edd71fd050fcb6b9b108c09db6e10276e3343e5567e5a73ae9f9da2cd5eb

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 17:54

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General

Target

2024-01-25_764acf9f4b4ebd60ca8c2444ed1ee2b0_cryptolocker.exe
Size

60KB
MD5

764acf9f4b4ebd60ca8c2444ed1ee2b0
SHA1

2278b07d4a17498ecaea4a379348d357243cd1b6
SHA256

3d34edd71fd050fcb6b9b108c09db6e10276e3343e5567e5a73ae9f9da2cd5eb
SHA512

cf0ee89d514dc1ded5ccf4ab611f9926eb3de9259b455475be536e90227698bd690462c324b7f5c8564be18cdb830d39f5677a6eb3aca5fc71a287d4ab1dd0e3
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDS4:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7p

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012246-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012246-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3060	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2084	2024-01-25_764acf9f4b4ebd60ca8c2444ed1ee2b0_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2084	2024-01-25_764acf9f4b4ebd60ca8c2444ed1ee2b0_cryptolocker.exe
3060	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 3060	2084	2024-01-25_764acf9f4b4ebd60ca8c2444ed1ee2b0_cryptolocker.exe	28
PID 2084 wrote to memory of 3060	2084	2024-01-25_764acf9f4b4ebd60ca8c2444ed1ee2b0_cryptolocker.exe	28
PID 2084 wrote to memory of 3060	2084	2024-01-25_764acf9f4b4ebd60ca8c2444ed1ee2b0_cryptolocker.exe	28
PID 2084 wrote to memory of 3060	2084	2024-01-25_764acf9f4b4ebd60ca8c2444ed1ee2b0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-25_764acf9f4b4ebd60ca8c2444ed1ee2b0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_764acf9f4b4ebd60ca8c2444ed1ee2b0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:3060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
61KB

MD5
629b9077e03d3493b711ba37999fc548

SHA1
03fa0907c1dddab23e1f9804c3c3d85574735cff

SHA256
c48e389f08749b33df7b7d88cc8995e07e77209bbde84355b5439e2a41606ddf

SHA512
817dc3966342868d6b20239a13d42756d1ab91547ddfc0e430fa1bb8510754004a999c4c4936c1cfa7c3508ad1a4fae48aba323413a755226cab3087740a3172

Download Submit
memory/2084-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2084-1-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2084-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3060-16-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download