86b4d45b152e55615698a578eb5fb76eccc56388e5d5fc29c78ed36757cec4d8

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04-02-2024 14:33

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General

Target

2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe
Size

62KB
MD5

9c4ee961d2deaa0a3cbcde152e96edd8
SHA1

6485a05f8367e6f859249226fbb4513cd5f42e3f
SHA256

86b4d45b152e55615698a578eb5fb76eccc56388e5d5fc29c78ed36757cec4d8
SHA512

10c942b3e8d713540d145b84b8f8f0b77239e57593eaf582c1f7174a888c2f57e539594de5bc99a9540bda3b378072f7c8b81632f9c8b3180d7d3cfbe3cfcb31
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299d:aq7tdgI2MyzNORQtOflIwoHNV2XBFV71

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00080000000120f8-14.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x00080000000120f8-14.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2124	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2408	2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_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
2408	2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe
2124	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2124	2408	2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe	28
PID 2408 wrote to memory of 2124	2408	2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe	28
PID 2408 wrote to memory of 2124	2408	2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe	28
PID 2408 wrote to memory of 2124	2408	2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_9c4ee961d2deaa0a3cbcde152e96edd8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2408
- 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:2124

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

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

Filesize
62KB

MD5
a1134e1ad4c869d0ad859a6688af3961

SHA1
118980c210c5946d32a744250c3ea360a2b8b7cb

SHA256
9d13f1712ca990628f2ae4f2cc792f9b344788d60e6a37b8f6cc7a284ccdf0e1

SHA512
a622d823669f7bf26d2b0df34a0dc6ef55a65fac54fac20e293af629b9183e75395373895ce2f81708feff7f1828ee71732bcfd001566937ff411cb8b60fe958

Download Submit
memory/2408-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2408-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2408-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download