f27afb02d3dd2bd2fc532f4e2544ac71300ed88721420ffb5a6a92189b2ee65a

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-02-2024 22:44

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General

Target

2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe
Size

38KB
MD5

f1aa3aaaa9695ce1e2383a180c66b420
SHA1

71c77e50438564b2b2fe446ea061dfe95d19ffd6
SHA256

f27afb02d3dd2bd2fc532f4e2544ac71300ed88721420ffb5a6a92189b2ee65a
SHA512

0c98add549ede317c5e0f88d9eae3cdd07037110234b1c477f4474785dee15c21183dd2e7bfb0403030fe6f3e614e62534f8d3b107b1617111d6f4a5eefbb242
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSK:X6QFElP6n+gJQMOtEvwDpjBsYK/K

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224c-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224c-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2516	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3012	2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2516	3012	2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe	28
PID 3012 wrote to memory of 2516	3012	2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe	28
PID 3012 wrote to memory of 2516	3012	2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe	28
PID 3012 wrote to memory of 2516	3012	2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2516

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\asih.exe

Filesize
38KB

MD5
3044a7d6448ad454d1d780c28d7152e8

SHA1
446999eb9b10078b6d38092a160a62290f302125

SHA256
5e17ac131b51ec78dd51458bfc00284fc0f67d70362017546890facf10a06350

SHA512
494b8d88d93eb55e5f9936ef07dfcd0c091da77beac32f016ff5e28bcc1b60a3bcc835077c91460928b28756d692b0ffc9ce34ab9f986e9c7e60ec3b61b8cfd2

Download Submit
memory/2516-15-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2516-22-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/3012-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3012-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/3012-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download