760829c1d83e673dd2f25c359634645b3a83b6105d05aee05a3b02152861f552

Analysis

max time kernel
14s
max time network
121s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 11:22

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General

Target

2024-09-21_937477211075a3fa37aa939ab92a580d_cryptolocker.exe
Size

30KB
MD5

937477211075a3fa37aa939ab92a580d
SHA1

04de7df28bef1a6f970cce09d685fecefd7b1582
SHA256

760829c1d83e673dd2f25c359634645b3a83b6105d05aee05a3b02152861f552
SHA512

8953f8c14ec10dd53f96ab1ab6f6c4f79c47d4906ce95f257ccf514f05c29a1fad507c598729e383f0f017b05362b2b3a4272862f1865ee4e45cce0ade3d1579
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznBEo:b/yC4GyNM01GuQMNXw2PSjP

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2072	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1692	2024-09-21_937477211075a3fa37aa939ab92a580d_cryptolocker.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-21_937477211075a3fa37aa939ab92a580d_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1692	2024-09-21_937477211075a3fa37aa939ab92a580d_cryptolocker.exe
2072	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 2072	1692	2024-09-21_937477211075a3fa37aa939ab92a580d_cryptolocker.exe	30
PID 1692 wrote to memory of 2072	1692	2024-09-21_937477211075a3fa37aa939ab92a580d_cryptolocker.exe	30
PID 1692 wrote to memory of 2072	1692	2024-09-21_937477211075a3fa37aa939ab92a580d_cryptolocker.exe	30
PID 1692 wrote to memory of 2072	1692	2024-09-21_937477211075a3fa37aa939ab92a580d_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-21_937477211075a3fa37aa939ab92a580d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_937477211075a3fa37aa939ab92a580d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  PID:2072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
30KB

MD5
bb3f7e33be31a84d348e19d0967c8a25

SHA1
e7ddf20523d161ef19ad463804a86721cd7b9a7b

SHA256
1dd530b504c2e854b9e959d26236d97ea6f8ba925b48cd6739fb18a35ff22de2

SHA512
687202e4bb6b846bcfea034e31c545297cb9047e1139622bec26a763783d9dc9f1e977cb4fa7616d9614d414afd492e50b6459c5aa7537616657a339cc064ab7

Download Submit
memory/1692-0-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/1692-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1692-8-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/2072-23-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download