fb2091262a4f75885a73827eb2cf52a90c1ca9fcf792aeb4319c3ddd68b741d6

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
03-02-2024 05:23

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General

Target

2024-02-03_08f21e4f779d92cfb70cec67fdfef4fa_cryptolocker.exe
Size

51KB
MD5

08f21e4f779d92cfb70cec67fdfef4fa
SHA1

3825a81fb65587ee67c171d68a2f7f0d693bc664
SHA256

fb2091262a4f75885a73827eb2cf52a90c1ca9fcf792aeb4319c3ddd68b741d6
SHA512

67c5265ac425369654689ec3144b54603b6cb4cd11f0fd26beefb47e8b5a599d595a10e6ecf85e8a7d83692d8d2ecb6d3875d617f4ea89fba5f5cadd0860202e
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTbm:bIDOw9a0DwitDZzcTm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a0000000133a9-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2996	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1388	2024-02-03_08f21e4f779d92cfb70cec67fdfef4fa_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 1388 wrote to memory of 2996	1388	2024-02-03_08f21e4f779d92cfb70cec67fdfef4fa_cryptolocker.exe	28
PID 1388 wrote to memory of 2996	1388	2024-02-03_08f21e4f779d92cfb70cec67fdfef4fa_cryptolocker.exe	28
PID 1388 wrote to memory of 2996	1388	2024-02-03_08f21e4f779d92cfb70cec67fdfef4fa_cryptolocker.exe	28
PID 1388 wrote to memory of 2996	1388	2024-02-03_08f21e4f779d92cfb70cec67fdfef4fa_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-03_08f21e4f779d92cfb70cec67fdfef4fa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_08f21e4f779d92cfb70cec67fdfef4fa_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2996

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\lossy.exe

Filesize
51KB

MD5
839479e456da9e327df3049d639377d1

SHA1
9c991bdc076f80d514aa526475c713d7ec4411d3

SHA256
ca02a70e3cad4501dba6e7e28559ce2b4c11277c5c56bcc8c964dac3c8476314

SHA512
b1a3e4c31cc3921653579aeab91116a3fff621ceaced8ddefbbd38dfd6febc03f629f67d3a753c4ebc357d09c454fefe01c91632aaff5356f8bba0760f05981f

Download Submit
memory/1388-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1388-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1388-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2996-15-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2996-22-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download