a98be8b0d8f868692458f40fac5085f5cdae87bf380fd22705bb9981d06c2038

Analysis

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

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
11-02-2024 21:43

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General

Target

2024-02-11_a54a2b309213817f947e9c19202542b5_cryptolocker.exe
Size

97KB
MD5

a54a2b309213817f947e9c19202542b5
SHA1

ed216c84cdd008c689c40498d746539c74de2325
SHA256

a98be8b0d8f868692458f40fac5085f5cdae87bf380fd22705bb9981d06c2038
SHA512

7ba3073036a3fe4dcd92b77641592104af11551a4f5db1951e2b8a0b4102a9c5337837c79bd6548fb67c1f5327d53e01d2524a6a2c886ca9a698014e8687d712
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCJAw:26a+2OtEvwDpjtzg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000126ab-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000126ab-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3048	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2240	2024-02-11_a54a2b309213817f947e9c19202542b5_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 2240 wrote to memory of 3048	2240	2024-02-11_a54a2b309213817f947e9c19202542b5_cryptolocker.exe	28
PID 2240 wrote to memory of 3048	2240	2024-02-11_a54a2b309213817f947e9c19202542b5_cryptolocker.exe	28
PID 2240 wrote to memory of 3048	2240	2024-02-11_a54a2b309213817f947e9c19202542b5_cryptolocker.exe	28
PID 2240 wrote to memory of 3048	2240	2024-02-11_a54a2b309213817f947e9c19202542b5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-11_a54a2b309213817f947e9c19202542b5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-11_a54a2b309213817f947e9c19202542b5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3048

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
97KB

MD5
9adae550e6ac7333a56c809179a3bab5

SHA1
7eadfa9b87462b5b7befc047ffc1fb2de140de54

SHA256
9e9b6e89888804c3ff8cd32aa3b1aceb68c763c303bf790262740a47b1e9cdd9

SHA512
d49c90e9093ba99990bd71e7b980393c8b18bae8e28b028dee12f0cd7e03d7a26151ed7dbed0bc63d2859ff00a9ad60cd06939b2ea7e6bdb4ee616c3bd03d1fc

Download Submit
memory/2240-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2240-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2240-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3048-15-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/3048-17-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download