f240ed61c44bd893297297b2af951c6cf4ca8aa9eb287b02db3b88aa15d4db21

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
20/02/2024, 01:48

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General

Target

2024-02-20_b727f438f06a4ff669aadf8037309bf0_cryptolocker.exe
Size

37KB
MD5

b727f438f06a4ff669aadf8037309bf0
SHA1

318f60c03bf9c7c04443cd1d5fd5d9698ddac8ce
SHA256

f240ed61c44bd893297297b2af951c6cf4ca8aa9eb287b02db3b88aa15d4db21
SHA512

93c33b848a9cda959919953faa3f4d8738e5af81aabe236914e676f69df21e8119f1f9a7d2760861d6177cb3d5d90f46933fed87dfff39da1cbbef4a0119af0d
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5axU:V6QFElP6n+gMQMOtEvwDpjyaYae

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012263-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012263-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2360	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1080	2024-02-20_b727f438f06a4ff669aadf8037309bf0_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 1080 wrote to memory of 2360	1080	2024-02-20_b727f438f06a4ff669aadf8037309bf0_cryptolocker.exe	28
PID 1080 wrote to memory of 2360	1080	2024-02-20_b727f438f06a4ff669aadf8037309bf0_cryptolocker.exe	28
PID 1080 wrote to memory of 2360	1080	2024-02-20_b727f438f06a4ff669aadf8037309bf0_cryptolocker.exe	28
PID 1080 wrote to memory of 2360	1080	2024-02-20_b727f438f06a4ff669aadf8037309bf0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-20_b727f438f06a4ff669aadf8037309bf0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_b727f438f06a4ff669aadf8037309bf0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2360

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
76b75d8d99ead4b9c86c5915f5f3bde1

SHA1
f427c8d4ca344fbebc3fa95b2f57b8d3168c1a58

SHA256
8bff37b423cec870ae34877dd2dc55511a65aaaa4a5f640e492b92653cfd06d1

SHA512
9f945d0d4976a53c877a7b4669fd7faadd526f3afe2bd3c86f15e98f3c2c0b48a24926048a8482302151655afa9088622164a44c01a20dccca0a109d262aa38c

Download Submit
memory/1080-0-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1080-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1080-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2360-16-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2360-15-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download