36990e5c3ade0ee958fd52bba07df41e9c4799e51c6734eefbd884d880cc721e

Analysis

max time kernel
151s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/04/2024, 07:34

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General

Target

2024-04-05_7cfc79e91d7ecb2948edc3a6e2b4d60e_cryptolocker.exe
Size

31KB
MD5

7cfc79e91d7ecb2948edc3a6e2b4d60e
SHA1

4bc6b25fb245b8e0a0561d193285d44ba7326536
SHA256

36990e5c3ade0ee958fd52bba07df41e9c4799e51c6734eefbd884d880cc721e
SHA512

ff091762d215cdf1d30513205dddb951e013cd41b95bf7a438105dfb9cb64d17d10451325d3bb21c305c293c2505ee8f3fc16094aa156e1918a01668ad5e572f
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJ5STV9Zoi:bA74zYcgT/Ekd0ryfjQRSnWV9ii

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012252-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2288	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2492	2024-04-05_7cfc79e91d7ecb2948edc3a6e2b4d60e_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 2492 wrote to memory of 2288	2492	2024-04-05_7cfc79e91d7ecb2948edc3a6e2b4d60e_cryptolocker.exe	28
PID 2492 wrote to memory of 2288	2492	2024-04-05_7cfc79e91d7ecb2948edc3a6e2b4d60e_cryptolocker.exe	28
PID 2492 wrote to memory of 2288	2492	2024-04-05_7cfc79e91d7ecb2948edc3a6e2b4d60e_cryptolocker.exe	28
PID 2492 wrote to memory of 2288	2492	2024-04-05_7cfc79e91d7ecb2948edc3a6e2b4d60e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_7cfc79e91d7ecb2948edc3a6e2b4d60e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_7cfc79e91d7ecb2948edc3a6e2b4d60e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2288

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
32KB

MD5
feaab77a8d028566db9f9169b4fba4b9

SHA1
8b2ab29ad1e8e15ed34e32b786d65f7fcdc55a6a

SHA256
2ae5ddf51f88399f6a932638ef0fb9cebbe60074fd57ff8cfb9aaab6c3810ad7

SHA512
b234b4e416ebf4f479ebbf3e98b9c6f25ff59f4d77efda13d141fa8d0e6a6939930a664731831d93e385e106de9350129bb2cea73e5a018b68dbc5bd14d98912

Download Submit
memory/2288-15-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2288-22-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2492-0-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2492-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2492-2-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download