b66e388710c98d8a1d281c7804fc24b2850e8a329f9f83842e0c319fec87a037

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 10:28

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General

Target

2024-02-23_148de0a1aa80cd8b9faf611f6c02bd2d_cryptolocker.exe
Size

62KB
MD5

148de0a1aa80cd8b9faf611f6c02bd2d
SHA1

4956168edbcd34ba44e48f79a2b83703e894e52e
SHA256

b66e388710c98d8a1d281c7804fc24b2850e8a329f9f83842e0c319fec87a037
SHA512

d01f2b25618a2bf66b0ca6ee498556d5f966b47e4b6236320ee7e39a78a74abab6903a1b03372f68b08cb57f679629d8d3af5fb91e7b489371fbbb9ffcd6edb1
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSAag:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012265-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012265-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2912	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2180	2024-02-23_148de0a1aa80cd8b9faf611f6c02bd2d_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
2180	2024-02-23_148de0a1aa80cd8b9faf611f6c02bd2d_cryptolocker.exe
2912	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 2912	2180	2024-02-23_148de0a1aa80cd8b9faf611f6c02bd2d_cryptolocker.exe	28
PID 2180 wrote to memory of 2912	2180	2024-02-23_148de0a1aa80cd8b9faf611f6c02bd2d_cryptolocker.exe	28
PID 2180 wrote to memory of 2912	2180	2024-02-23_148de0a1aa80cd8b9faf611f6c02bd2d_cryptolocker.exe	28
PID 2180 wrote to memory of 2912	2180	2024-02-23_148de0a1aa80cd8b9faf611f6c02bd2d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-23_148de0a1aa80cd8b9faf611f6c02bd2d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_148de0a1aa80cd8b9faf611f6c02bd2d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2180
- 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:2912

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
62KB

MD5
f95bcfbceabefef46b13f641f59a4e04

SHA1
6a07c2cabf6cb5677398c56638f9dc6d1771bba0

SHA256
f07671ead57859586a26da557a0aa219624dc8e470e06a3096adb08de698f59d

SHA512
9f588d9133816728e54b4db334cbb920ff54f9bb42bec96f177c0bc36701a551e778f747899e703aa2c2cf563fd7d263de9d841c65fbab5d423d6e9ff93ea7d8

Download Submit
memory/2180-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2180-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2180-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2912-18-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download