f8a41f99e85f416fb817b9cee3ef5869ad81f315f2e994207e65be4d58cbf072

Analysis

max time kernel
150s
max time network
162s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/03/2024, 09:26

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General

Target

2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe
Size

50KB
MD5

08b237af49d968ed59a9b5472d9a40e3
SHA1

623f35fd46e5eff524f2358e6e36b050396e6df4
SHA256

f8a41f99e85f416fb817b9cee3ef5869ad81f315f2e994207e65be4d58cbf072
SHA512

e8b510d5056895b15d63b430d3c08632f1a05bb7c5cc69711d2501c23cfac6d575ebca284e9191a784680f5981acc8a0459ba94f9d764c3fb5649fbc91ee27e6
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKL:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7p

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000800000001227d-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000800000001227d-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2472	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1404	2024-03-13_08b237af49d968ed59a9b5472d9a40e3_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
1404	2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe
2472	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1404 wrote to memory of 2472	1404	2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe	28
PID 1404 wrote to memory of 2472	1404	2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe	28
PID 1404 wrote to memory of 2472	1404	2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe	28
PID 1404 wrote to memory of 2472	1404	2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1404
- 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:2472

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
50KB

MD5
84de46eced9ace1b5105dcdea6a87093

SHA1
a2aa83f653116cd55e5a113aa7114fbc8c4f9863

SHA256
5114b1320eeddbb560edb43873a0ec78ecee22d7fa6656bbf700c50086f92d54

SHA512
15678219a6455b590dc7841a75ce4068089f2a9d2d8c37e76550905a6610eb948518634dad69e023986d81a16f4f553114d6f4a973391dbf0d200c053923d68d

Download Submit
memory/1404-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1404-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1404-4-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2472-18-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download