15cc1b70175b7d6a987399c3a59695419a97164b5a467408f734b205939dd047

Analysis

max time kernel
148s
max time network
156s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
25-06-2024 19:48

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General

Target

2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe
Size

34KB
MD5

791921951207ef8a89e90136f135e0a4
SHA1

71cfc8bc74d4d84f0a31d65448b9c0fa44db8f31
SHA256

15cc1b70175b7d6a987399c3a59695419a97164b5a467408f734b205939dd047
SHA512

b40bab32a81e908f628f44fbb82f616fea62fa3b2a60f2f9793b0773b153181ac9623900533a6dfbadf7314233c7e08f56155b6cc315726c216362f954165436
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvJF3p:bG74zYcgT/Ekd0ryfjkb5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2556-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000f000000012286-11.dat	CryptoLocker_rule2
behavioral1/memory/2556-14-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1304-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1304	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2556	2024-06-25_791921951207ef8a89e90136f135e0a4_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 2556 wrote to memory of 1304	2556	2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe	28
PID 2556 wrote to memory of 1304	2556	2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe	28
PID 2556 wrote to memory of 1304	2556	2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe	28
PID 2556 wrote to memory of 1304	2556	2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-25_791921951207ef8a89e90136f135e0a4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1304

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
35KB

MD5
47ca8f9473b202b4cbdac48d12220d1f

SHA1
d3f1bd358cda84afcd76d6beb0435b5c78a2369d

SHA256
e87db28d478a38a25dcf60703d45c0f0cc7360fe7dac4a4c245d112e9ad878e7

SHA512
af4510731984ffcd1b4aa18a78a4a72adb3ba82cc241805ba4491ce1c0ac721dc245a3a7f1725fa74d4acd3456275c689950c2d02d5cdbaa939fe11ca5c2c447

Download Submit
memory/1304-17-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1304-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2556-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2556-1-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2556-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2556-9-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2556-14-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download