8c4834ab9f6104353d567d6dde6bdaad6d1f9e006211570a66736d846ce1def0

Analysis

max time kernel
150s
max time network
150s
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, 03:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-09-19_f7d9fdf1ede6df26191272ac9ce04d3d_cryptolocker.exe
Size

34KB
MD5

f7d9fdf1ede6df26191272ac9ce04d3d
SHA1

465b71e46532379f231a318970b62504ed19a137
SHA256

8c4834ab9f6104353d567d6dde6bdaad6d1f9e006211570a66736d846ce1def0
SHA512

6df6dd3059773e631a80fdcad1fd6090593213e5243ff00e42c79cdb5c60561c3165d8b78a9a7fb373c2010b921a07cadfa0a9c89e5e8577a03489de548092ac
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgYKm:b/yC4GyNM01GuQMNXw2PSjSKkcJYKm

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	2024-09-19_f7d9fdf1ede6df26191272ac9ce04d3d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4088	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_f7d9fdf1ede6df26191272ac9ce04d3d_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 232 wrote to memory of 4088	232	2024-09-19_f7d9fdf1ede6df26191272ac9ce04d3d_cryptolocker.exe	82
PID 232 wrote to memory of 4088	232	2024-09-19_f7d9fdf1ede6df26191272ac9ce04d3d_cryptolocker.exe	82
PID 232 wrote to memory of 4088	232	2024-09-19_f7d9fdf1ede6df26191272ac9ce04d3d_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_f7d9fdf1ede6df26191272ac9ce04d3d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_f7d9fdf1ede6df26191272ac9ce04d3d_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:232
- 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:4088

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

Loading Replay Monitor...

Downloads

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

Filesize
34KB

MD5
c23853e6262212bb32f28fc4ffabe5ae

SHA1
fda5e78c41cce8cf9ea7d3a7fb73482ebb9eba37

SHA256
2e5ff680003970d9092ffd7fba689afe4e86bcc21341f5b642c1b950d5cea999

SHA512
7e943251229df216f7ebe833ff149cb81ae401af3866d91092bccd745d95ea2fefb94c57d91b092ab1e9af9ea9a3a06e552d48d01260d3621b53c1467ac21f7e

Download Submit
memory/232-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/232-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/232-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4088-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download