6b74e53acc640e97bf3d2cacbc485961352fc72c39126a8a2c72804e7112246d

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
10/03/2024, 15:02

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General

Target

2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe
Size

62KB
MD5

1c151e929a26c6c145752b912b46a298
SHA1

a18f0a4f8d81b11ca0f9604b12ce113a014a2006
SHA256

6b74e53acc640e97bf3d2cacbc485961352fc72c39126a8a2c72804e7112246d
SHA512

7bc98ed887bab7098672109b54265e0a3f7dfe0afb26c4233ef7c39a5a0a5dc8459627e918a8c4743e481d77d09a96521f692e990711696c5296171281a064a9
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293ol:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7Y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014abe-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014abe-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1940	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1276	2024-03-10_1c151e929a26c6c145752b912b46a298_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
1276	2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe
1940	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 1940	1276	2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe	28
PID 1276 wrote to memory of 1940	1276	2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe	28
PID 1276 wrote to memory of 1940	1276	2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe	28
PID 1276 wrote to memory of 1940	1276	2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_1c151e929a26c6c145752b912b46a298_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1276
- 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:1940

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
63KB

MD5
617548072d9907c89479f887d9855368

SHA1
7ddadf8d6217d7976dc37ae47b9406825316c510

SHA256
6dd154eead3e37a553f533bc456bfd86d8c6a2149226829080684271b2b7d989

SHA512
cb92db242a399dbc01015c1175a15027a646157c339cea63744fc5a6985e2a6e0881b3e7e65ee5eab2de42d410d6515eef929902c42a6e7dcd825e8fcf2adfe3

Download Submit
memory/1276-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1276-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1276-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1940-18-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download