4c9371a27521106ffeeb48e04b00b431da3baf359d29a96c4596a76689848f29

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
24/05/2024, 02:34

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General

Target

2024-05-24_8a210a6ad7431ab763983a49c7b1185f_cryptolocker.exe
Size

31KB
MD5

8a210a6ad7431ab763983a49c7b1185f
SHA1

be0e42b4403d0fca2d9813d424e021f953d1c86d
SHA256

4c9371a27521106ffeeb48e04b00b431da3baf359d29a96c4596a76689848f29
SHA512

15916522715e0cb7568e38afaf547bed6c3a49261d92f740cef24b0fb21a5c191de05cbe5c220d9ca6eac37e4d0e0a1f0262db80a5aac05ee859efe6d40ab00b
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNfi:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x001000000001226b-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x001000000001226b-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2744	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1900	2024-05-24_8a210a6ad7431ab763983a49c7b1185f_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
1900	2024-05-24_8a210a6ad7431ab763983a49c7b1185f_cryptolocker.exe
2744	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 2744	1900	2024-05-24_8a210a6ad7431ab763983a49c7b1185f_cryptolocker.exe	28
PID 1900 wrote to memory of 2744	1900	2024-05-24_8a210a6ad7431ab763983a49c7b1185f_cryptolocker.exe	28
PID 1900 wrote to memory of 2744	1900	2024-05-24_8a210a6ad7431ab763983a49c7b1185f_cryptolocker.exe	28
PID 1900 wrote to memory of 2744	1900	2024-05-24_8a210a6ad7431ab763983a49c7b1185f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-24_8a210a6ad7431ab763983a49c7b1185f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_8a210a6ad7431ab763983a49c7b1185f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1900
- 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:2744

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
31KB

MD5
105612524f1474f519f12d95e7639e3f

SHA1
e28ffd7bf5ab58d6cbf1aac4cf7b88237100c316

SHA256
1f8ff538780d9d10883e9bfdaf9f9d8e53d0e24dea6c93d9f14d0e3c77b0e5db

SHA512
a0c08d186cb970a2643a386bc795ce5156a0e29e3a51d2d6e1bb29b3d34eeb3a04435d80fe4d5dff986c48a1255b73d8c739531a3035399ee64a6e8b13c4a598

Download Submit
memory/1900-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1900-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1900-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2744-23-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download