d9aa6fa70d04ae6ae7ab5f035bbf8f5ed17fd325f0745b7d2a5a961efd2cc116

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 02:28

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General

Target

2024-09-19_c8b56e34ffd68c1a846c38cb9fa51ecf_cryptolocker.exe
Size

43KB
MD5

c8b56e34ffd68c1a846c38cb9fa51ecf
SHA1

d9dc32ad287a6302eba2b85f08bae094163eb162
SHA256

d9aa6fa70d04ae6ae7ab5f035bbf8f5ed17fd325f0745b7d2a5a961efd2cc116
SHA512

ffa8ae9ed5982276bac5ffca64fd639c2fde7a9c34f1a5fb677e950ee380cc5a31ebcab0b2f7b3c34147a2b879199c7dea90e1db02d7987a93a54655cd2190b8
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAJ:b/pYayGig5HjS3NPAJ

Score

7^/10

discovery

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2024-09-19_c8b56e34ffd68c1a846c38cb9fa51ecf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5048	retln.exe

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	2024-09-19_c8b56e34ffd68c1a846c38cb9fa51ecf_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4564 wrote to memory of 5048	4564	2024-09-19_c8b56e34ffd68c1a846c38cb9fa51ecf_cryptolocker.exe	82
PID 4564 wrote to memory of 5048	4564	2024-09-19_c8b56e34ffd68c1a846c38cb9fa51ecf_cryptolocker.exe	82
PID 4564 wrote to memory of 5048	4564	2024-09-19_c8b56e34ffd68c1a846c38cb9fa51ecf_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_c8b56e34ffd68c1a846c38cb9fa51ecf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_c8b56e34ffd68c1a846c38cb9fa51ecf_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4564
- 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
  PID:5048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
43KB

MD5
35cc506ca56ae78515522fbdfb0b0ae1

SHA1
c1f51295b82ed961b90bf64a2571429065cbe9ff

SHA256
825fc7312313663b58ec7b24751ce08adff369ed9e03995a17d0aa3b1a4e6be8

SHA512
673e8d2f64411514e08ff377ad3c36ac08cf21bf82af57fc7385234be8be79f26ee58e18ccc37609b5b8a00a856743cb981a7ae08c962574c99aea475d5a6598

Download Submit
memory/4564-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4564-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4564-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5048-25-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download