938bd70377ca3936a8f846ef3ebcf6b7e199ed19fb7388a9c7ec3afe9b2db073

Analysis

max time kernel
152s
max time network
162s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/03/2024, 00:46

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General

Target

2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe
Size

46KB
MD5

b048135e1c0f3c38d8321712bbfa904d
SHA1

30546109bc4ed05b61ccc35a09dac9c7d3fd689c
SHA256

938bd70377ca3936a8f846ef3ebcf6b7e199ed19fb7388a9c7ec3afe9b2db073
SHA512

2e91dd75babeafb6ca9698f617826d37156fc6f31dec28f02915546e85a0160df44b0bb5beab7dc8f960db0625cccf31806b59e771b618aee68058ee4f008a7a
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxO:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000122fa-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000122fa-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2812	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2292	2024-03-07_b048135e1c0f3c38d8321712bbfa904d_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
2292	2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe
2812	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 2812	2292	2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe	28
PID 2292 wrote to memory of 2812	2292	2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe	28
PID 2292 wrote to memory of 2812	2292	2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe	28
PID 2292 wrote to memory of 2812	2292	2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2292
- 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:2812

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
46KB

MD5
7865de2766cd5fbfd45da24a4b1efa76

SHA1
57c10536d619539176d3da108fc129732bc6a7f7

SHA256
d4380640f8f30a8c2a05abd0657e31d7ae40118c151d102ddf0e0a4ed89c625a

SHA512
57ef8be3136a8a33783458109e2d07ee88ae97b438c36ff2e836bb918cce49281274ed696739a0cd9d3d6d3bad08ee0a0fab3bd1fa0d8488d97097039be6c66f

Download Submit
memory/2292-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2292-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2292-8-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2812-16-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download