f3883d6cc88f7ac8a7be784a6e247b99cbccf992b44f5c40dff8a3352aed5c35

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
17-05-2024 13:33

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General

Target

2024-05-17_99bfe9b45da64b99ec88bc8ee5890d96_cryptolocker.exe
Size

35KB
MD5

99bfe9b45da64b99ec88bc8ee5890d96
SHA1

8638bc77c7127fab387d7acfeeec9dc8e2e6f611
SHA256

f3883d6cc88f7ac8a7be784a6e247b99cbccf992b44f5c40dff8a3352aed5c35
SHA512

a6b4278715891f8b8baf400be1da3688538566a5d795f76378b2e2498c5b906bbc6836500a6bf28c0d2a197653d3c2359ca9df3b39e688af36684446bcecef68
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunIVpeNs23mAA6lxG:bA74zYcgT/Ekd0ryfjPIunqpeNswm6G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012286-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2780	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1964	2024-05-17_99bfe9b45da64b99ec88bc8ee5890d96_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 1964 wrote to memory of 2780	1964	2024-05-17_99bfe9b45da64b99ec88bc8ee5890d96_cryptolocker.exe	28
PID 1964 wrote to memory of 2780	1964	2024-05-17_99bfe9b45da64b99ec88bc8ee5890d96_cryptolocker.exe	28
PID 1964 wrote to memory of 2780	1964	2024-05-17_99bfe9b45da64b99ec88bc8ee5890d96_cryptolocker.exe	28
PID 1964 wrote to memory of 2780	1964	2024-05-17_99bfe9b45da64b99ec88bc8ee5890d96_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-17_99bfe9b45da64b99ec88bc8ee5890d96_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-17_99bfe9b45da64b99ec88bc8ee5890d96_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2780

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\hasfj.exe

Filesize
36KB

MD5
c34fb090f77951d16c77c9c4e242d85d

SHA1
851b01bbdfe78c6207f6b2ad0e0cc591704f817f

SHA256
86b0e32d89689f0d6f7a56e60268116888acb2e7dc59c8afa80eccfd3babe6c9

SHA512
62be17c31ec939cb6e04a64cfd55dfc6aa9d49b249c7ac630d5e7f4ee716fc55e8f80985d55fd7ac5022dad9e9923cc646241cdee87f4d5bc9ab4e5df90b1bfb

Download Submit
memory/1964-0-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/1964-1-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Filesize
24KB

Download
memory/1964-8-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/2780-15-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2780-22-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download