3bacf23201cf6ff5400085f78bf933ac52c58c080d15ad989d4d264d9c292be0

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01-06-2024 01:27

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General

Target

2024-06-01_095e5235968fe6085e727fe802a955b3_bkransomware.exe
Size

71KB
MD5

095e5235968fe6085e727fe802a955b3
SHA1

8fdb05f3aeb6bb074076d814da6cee2f124b4275
SHA256

3bacf23201cf6ff5400085f78bf933ac52c58c080d15ad989d4d264d9c292be0
SHA512

09a533302d1b0454bc4e85bfd28185c72874f3c55600e17077b5b188caccf84dbf8fd1d92bd9c12320eb36fec5bb33012f2935ab7fc95bd421cc5abd9bc649a0
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTR:ZRpAyazIliazTR

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
220	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_095e5235968fe6085e727fe802a955b3_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-01_095e5235968fe6085e727fe802a955b3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1512	2024-06-01_095e5235968fe6085e727fe802a955b3_bkransomware.exe
Token: SeDebugPrivilege	220	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 220	1512	2024-06-01_095e5235968fe6085e727fe802a955b3_bkransomware.exe	82
PID 1512 wrote to memory of 220	1512	2024-06-01_095e5235968fe6085e727fe802a955b3_bkransomware.exe	82
PID 1512 wrote to memory of 220	1512	2024-06-01_095e5235968fe6085e727fe802a955b3_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-01_095e5235968fe6085e727fe802a955b3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_095e5235968fe6085e727fe802a955b3_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1512
- 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:220

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
392KB

MD5
4c743ee3a32ede6b5488179806d66609

SHA1
2fadc4a11910580d0d3febd663286fc57d1fa4e8

SHA256
bae76e5084e533dc34823294f818f27e4349268017cc0bce6788acbfdb0aef7b

SHA512
35de156e7697dc524fefa4540ba0027366965f279163af29e954e3448922e166eae119ffd985fc5ba91fead3e46212c67c29e02605257dbdfbf782bf0d0f8058

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C:\Users\Admin\AppData\Local\Temp\KEF6AdFIfvq55mb.exe

Filesize
71KB

MD5
7a70fdb62bc09fb6c7bb3b874470a9a4

SHA1
1acd3de9354bea85024c553deed30a65d97635bd

SHA256
5848fffefa59a98ef23d8d7f7d769f401192633e3625a1edbee45ba54c9c4e0c

SHA512
79b81de0752ea28e18ae51abb571de18cbb00c718c008b5c2d669124889958bcc45e4c49f116033caef4bf662b3ef84af8123a123573ca1a4b392a96db0cb69e

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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