d9c8258a0230fb06897dc7b18ec438773ffabb19e8014e0ab3fbe690d14ab1e1

Analysis

max time kernel
0s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
07/01/2024, 12:17

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General

Target

2024-01-06_e523b60462840b024bc33860de57ec31_cryptolocker.exe
Size

104KB
MD5

e523b60462840b024bc33860de57ec31
SHA1

a3dbf8930875774cf7c624ececaf3552ff81e897
SHA256

d9c8258a0230fb06897dc7b18ec438773ffabb19e8014e0ab3fbe690d14ab1e1
SHA512

664fa1b0694d4026c7e122d034e1260d5247c079f61ebedc076fc26bfa4e736d298ae770127ce6328004023cf3b783fad9602f1f020688b3dee3d6a550098ef0
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6Gksg5:1nK6a+qdOOtEvwDpjC

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1708	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2536	2024-01-06_e523b60462840b024bc33860de57ec31_cryptolocker.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1708-24-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2536-8-0x0000000000500000-0x000000000050F311-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 2536 wrote to memory of 1708	2536	2024-01-06_e523b60462840b024bc33860de57ec31_cryptolocker.exe	16
PID 2536 wrote to memory of 1708	2536	2024-01-06_e523b60462840b024bc33860de57ec31_cryptolocker.exe	16
PID 2536 wrote to memory of 1708	2536	2024-01-06_e523b60462840b024bc33860de57ec31_cryptolocker.exe	16
PID 2536 wrote to memory of 1708	2536	2024-01-06_e523b60462840b024bc33860de57ec31_cryptolocker.exe	16

C:\Users\Admin\AppData\Local\Temp\2024-01-06_e523b60462840b024bc33860de57ec31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-06_e523b60462840b024bc33860de57ec31_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1708

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/1708-16-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1708-22-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1708-24-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2536-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2536-8-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2536-1-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2536-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download