b5c07689f7787151aa672b79178c65fd8c8d8261d618ba2182139049792a0d0c

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
20-05-2024 06:32

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General

Target

2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe
Size

43KB
MD5

3e4c9f540f79847d3148941d54cccf68
SHA1

06883516de39ce797505c522fdcfdd369315c7da
SHA256

b5c07689f7787151aa672b79178c65fd8c8d8261d618ba2182139049792a0d0c
SHA512

2da102260ef6af7ddb042a66680c7cc970c4131b1af4a11aa62b85656858c884e0f6cbbbaf7f3ba1798b1315f08743c3651d84ff85a9ab62c9118eb0ca980465
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD95q4:X6QFElP6n+gJQMOtEvwDpjBmzDkWDrZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012262-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012262-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1676	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2324	2024-05-20_3e4c9f540f79847d3148941d54cccf68_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 2324 wrote to memory of 1676	2324	2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe	28
PID 2324 wrote to memory of 1676	2324	2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe	28
PID 2324 wrote to memory of 1676	2324	2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe	28
PID 2324 wrote to memory of 1676	2324	2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_3e4c9f540f79847d3148941d54cccf68_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1676

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
43KB

MD5
6286db80f8fd8d3aeb670196220b12e3

SHA1
369fcbf145b6698d9462a8407be447070903f2ba

SHA256
8fecefe85156ffa4f11ef4eb27d2b863f10becf5098a161571fc3ba8a978f390

SHA512
4ca54d91b0a0f20249c8c10ea9f2ce8c01b8291a140a4352c57a496e168cc41e9676d348391b38904d232c2675ad507111cf7b960eefb811489dc0741afa3669

Download Submit
memory/1676-15-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1676-22-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2324-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2324-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2324-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download