d146165ce52fea93153aca3076c6f22ad4453a0908dda5e4302699cf6814a384

Analysis

max time kernel
20s
max time network
121s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
18-10-2024 01:53

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-10-18_a4cabb31a365179071e1c8812289d502_cryptolocker.exe
Size

31KB
MD5

a4cabb31a365179071e1c8812289d502
SHA1

78fe91a4c189be6994a0af76dd9e0938d063270f
SHA256

d146165ce52fea93153aca3076c6f22ad4453a0908dda5e4302699cf6814a384
SHA512

da1612bf6d5f24fa90c4066a96d03f94efe01927261ba93fcc9cd7f4da8d4449bfe3cfefc3bcf1da97fa43a6c3847a320803091962abac15b2c9c86e0d2cf2b5
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznUs2J:b/yC4GyNM01GuQMNXw2PSjMJ

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2072	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1972	2024-10-18_a4cabb31a365179071e1c8812289d502_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	2024-10-18_a4cabb31a365179071e1c8812289d502_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1972	2024-10-18_a4cabb31a365179071e1c8812289d502_cryptolocker.exe
2072	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 2072	1972	2024-10-18_a4cabb31a365179071e1c8812289d502_cryptolocker.exe	30
PID 1972 wrote to memory of 2072	1972	2024-10-18_a4cabb31a365179071e1c8812289d502_cryptolocker.exe	30
PID 1972 wrote to memory of 2072	1972	2024-10-18_a4cabb31a365179071e1c8812289d502_cryptolocker.exe	30
PID 1972 wrote to memory of 2072	1972	2024-10-18_a4cabb31a365179071e1c8812289d502_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-18_a4cabb31a365179071e1c8812289d502_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-18_a4cabb31a365179071e1c8812289d502_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1972
- 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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
32KB

MD5
a5a3c0820b5911f0f4c72eb4567b6679

SHA1
709acf1b126cb78526c917a6a2ea19fe2b1a6174

SHA256
901441cb87b176cb7c1b7fb8702b406ea2b0c25636db96434c91d0edf3b4185b

SHA512
112cc245ed36ac103b7e11890f8c8cfdfacd41696c102cd178d1c54561a9d2cc6168cdfae4145af6e7904a5c2c5e682385bad4033a791ce72cb70aaa6ffa5577

Download Submit
memory/1972-0-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1972-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1972-8-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2072-23-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download