3ab806b4b929c1e9b52a9ac7b4a7da50c9f7a8bf9817794d4c1904afae636530

Analysis

max time kernel
0s
max time network
137s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
05-01-2024 05:43

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General

Target

2024-01-01_5b0e4d47635d459bd72ad07dce8f1296_cryptolocker.exe
Size

105KB
MD5

5b0e4d47635d459bd72ad07dce8f1296
SHA1

f4ef6abbc6a8847cd74635db35b1e817689f9d1f
SHA256

3ab806b4b929c1e9b52a9ac7b4a7da50c9f7a8bf9817794d4c1904afae636530
SHA512

b3daab81553869c93f434f8f4af4103fa6d24eef9def5f3cf242a28e351a2589ab10212eb50489e4d7fd8c365ddb66e556b8cf4fa48d41ac146d360443689a34
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GkszfHP:1nK6a+qdOOtEvwDpj7

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2776	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2332	2024-01-01_5b0e4d47635d459bd72ad07dce8f1296_cryptolocker.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2776-24-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2332-8-0x0000000000500000-0x000000000050F311-memory.dmp	upx

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 2332 wrote to memory of 2776	2332	2024-01-01_5b0e4d47635d459bd72ad07dce8f1296_cryptolocker.exe	14
PID 2332 wrote to memory of 2776	2332	2024-01-01_5b0e4d47635d459bd72ad07dce8f1296_cryptolocker.exe	14
PID 2332 wrote to memory of 2776	2332	2024-01-01_5b0e4d47635d459bd72ad07dce8f1296_cryptolocker.exe	14
PID 2332 wrote to memory of 2776	2332	2024-01-01_5b0e4d47635d459bd72ad07dce8f1296_cryptolocker.exe	14

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
1⤵
- Executes dropped EXE
PID:2776

C:\Users\Admin\AppData\Local\Temp\2024-01-01_5b0e4d47635d459bd72ad07dce8f1296_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-01_5b0e4d47635d459bd72ad07dce8f1296_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2332

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

memory/2332-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2332-8-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2332-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2332-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2776-23-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2776-24-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2776-16-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download