3c635d99c50476e0071d86e667daca727dc9238682945f751e851882e149dbae

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
04/06/2024, 17:33

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General

Target

2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe
Size

66KB
MD5

71bad24e7971e13d6a3ecc5fa28eb864
SHA1

2638cc78db5381ed2be97087945300169ee81328
SHA256

3c635d99c50476e0071d86e667daca727dc9238682945f751e851882e149dbae
SHA512

6f157f1b0e8f24c2fe65d909f7b96237b15da615319fba694dab4bd261dcaa38f90b06bd21f266c81edd59d9d8c70ec20dd98cce97975e0066749e57018fd057
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299NR:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7D

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000015cb0-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000015cb0-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2884	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1200	2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_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
1200	2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe
2884	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 2884	1200	2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe	28
PID 1200 wrote to memory of 2884	1200	2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe	28
PID 1200 wrote to memory of 2884	1200	2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe	28
PID 1200 wrote to memory of 2884	1200	2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1200
- 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:2884

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
66KB

MD5
d9f1097a278924bec798e627adb0bd67

SHA1
46fd37941917567082b8fedab754db870717518b

SHA256
1acf021881f06866ebef72efa565c514bd1d06cc3ffb1823ece76b9901f9598e

SHA512
940a51f66209d847c018ccee92ddc3bd4c4e5ad3b91219b2c47fcea3ca1c40b47edfdb7c2932969c9fc2b0f08d394ddac72fc41d68c74c22b1d834f65da88fd5

Download Submit
memory/1200-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1200-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1200-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2884-23-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download