8419acf61acbf6418a8c8908f8e8cf50483f3a0972b1f5339fbeb8b508f4dd61

Analysis

max time kernel
132s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01-06-2024 06:23

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General

Target

2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe
Size

71KB
MD5

00a331d03de7fc87c812fb558132986e
SHA1

f3c6a6c61d1444d8260e981c09a3da2da0896949
SHA256

8419acf61acbf6418a8c8908f8e8cf50483f3a0972b1f5339fbeb8b508f4dd61
SHA512

10e05d8f4d7e96af8d650cd5b752a37e30c42ae8dde9b2ac8801398ef180792ac7289903890e2a76bd96e49a45c4ed8a4b922e103054c5090f8c4ee32200a55a
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTFK:ZRpAyazIliazTg

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1068	CTS.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1776	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe
Token: SeDebugPrivilege	1068	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1776 wrote to memory of 1068	1776	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe	83
PID 1776 wrote to memory of 1068	1776	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe	83
PID 1776 wrote to memory of 1068	1776	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  PID:1068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
43d57c6f366eee94e440c2c9334aeffb

SHA1
9d6ad9db5fe4c89eaa4f75ea4e9f0590889311bb

SHA256
c2eccc9cfb2fc4359cf7b4cf54506f0ba49f7cdd750f63c53f4b3054860bbec5

SHA512
f842dcc313424ed87ccf6857fb635cca3484238189c11e8c40ae9e89bfda405647bee8ae5cdc2c10a72a2b8d33a0ceaf5a5d58b2911fe64f0d89bb19ad3d7d95

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C:\Users\Admin\AppData\Local\Temp\fnZu0Q4D5meW9Tb.exe

Filesize
71KB

MD5
7ae9cc75e0e0f74a6342487067bd0551

SHA1
15717ff6469344cb6357c0889713d8652a086914

SHA256
2f2e8f91aa092277c535c5aec6cce14ce715a7fea5e5182f5cf57861219b1c98

SHA512
bea69d2a6919cb489b2d12f03666b9be33fa52c2ab8cdc765267194a05ee8eb879c2e78472be0eb2778125fe9e858151adc8bf051974d308752d59f8adac3021

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads