705551e42e64dc7d83b4dddfdff8eca793c5e6971939fe0ec67b82afb1abf0c6

Analysis

max time kernel
133s
max time network
143s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04/04/2024, 16:35

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General

Target

2024-04-04_386a2027a29d95e24b2f2fb59a6a7b00_cryptolocker.exe
Size

68KB
MD5

386a2027a29d95e24b2f2fb59a6a7b00
SHA1

0f496e0b55f5c99c7f5391d2f1eb28e511697be1
SHA256

705551e42e64dc7d83b4dddfdff8eca793c5e6971939fe0ec67b82afb1abf0c6
SHA512

58077fffe15946f11c32bdc18410dbd887a2cba0c56a679d0f1b327c288d6442fc6ce5fc58a2d3309badf8208be61226bd3277a0e5a117b273857dd5e7d738b8
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUE:DW60sllyWOtEvwDpjwF85m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2632-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012254-11.dat	CryptoLocker_rule2
behavioral1/memory/2632-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2508-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2632-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012254-11.dat	CryptoLocker_set1
behavioral1/memory/2632-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2508-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2508	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2632	2024-04-04_386a2027a29d95e24b2f2fb59a6a7b00_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 2632 wrote to memory of 2508	2632	2024-04-04_386a2027a29d95e24b2f2fb59a6a7b00_cryptolocker.exe	28
PID 2632 wrote to memory of 2508	2632	2024-04-04_386a2027a29d95e24b2f2fb59a6a7b00_cryptolocker.exe	28
PID 2632 wrote to memory of 2508	2632	2024-04-04_386a2027a29d95e24b2f2fb59a6a7b00_cryptolocker.exe	28
PID 2632 wrote to memory of 2508	2632	2024-04-04_386a2027a29d95e24b2f2fb59a6a7b00_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-04_386a2027a29d95e24b2f2fb59a6a7b00_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-04_386a2027a29d95e24b2f2fb59a6a7b00_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2508

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
68KB

MD5
18a95dca420cfe938330fc6abd805c9a

SHA1
def39421b9a9f513c65bf909b74abae9a411dd18

SHA256
8a4b2f012521abf5ddac60f81f3a10409dae72e63b6d506eb886a3f4c5bc6397

SHA512
3a0ef5d5e7c0297ea21b4eb46bec64844eb43b2dc9d636f23677850aeb87d6c3204320da28c231646df2d3814227bcd2787cdfa3dc119ba9ddd8bc95a84acc3b

Download Submit
memory/2508-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2508-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2508-20-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2632-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2632-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2632-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2632-4-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2632-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download