de58ab0177dd7e5e33b2c10b3acec97c865e4b96699acf709d6485b125891d45

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
27/05/2024, 15:45

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General

Target

2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe
Size

44KB
MD5

33e1a1899734632a92c882da7811b7ee
SHA1

8ecc29244eb8b4ca86510f35a1246c6e1c9ff87c
SHA256

de58ab0177dd7e5e33b2c10b3acec97c865e4b96699acf709d6485b125891d45
SHA512

ee74d7450850ea408e3c842ce0f72a9bbda18c9ed290a4d97c10037e21a240f4e4f919a68b999d5d84d32b78275929bc6818107837182d6104026ee05bf0cd76
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUklh:bm74zYcgT/EkM0ryfjdL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2068-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012271-11.dat	CryptoLocker_rule2
behavioral1/memory/2068-13-0x0000000001E70000-0x0000000001E7D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2068-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2780-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2780	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2068	2024-05-27_33e1a1899734632a92c882da7811b7ee_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 2068 wrote to memory of 2780	2068	2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe	28
PID 2068 wrote to memory of 2780	2068	2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe	28
PID 2068 wrote to memory of 2780	2068	2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe	28
PID 2068 wrote to memory of 2780	2068	2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2068
- 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
44KB

MD5
7c875ca57d1fd4b40a97a2523ad002e9

SHA1
bfd238b969e7585ceca54ba0b7b63fdd55c96468

SHA256
28e62f9a859722c08743566b98f34e40c234baf62ad2e4f4327168d3eb0e9bfe

SHA512
909c6ea7f5f89f2033b94b99e47bf5cd2fb55b25fc0ffda7624ba714352850dc3324268c0007ef7ade5663d9190bf994148d12ca64148b174eb25ab4a1512793

Download Submit
memory/2068-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2068-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2068-1-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2068-9-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2068-13-0x0000000001E70000-0x0000000001E7D000-memory.dmp

Filesize
52KB

Download
memory/2068-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2780-18-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2780-25-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2780-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download