38402d99cb922940335fbfab9611c326463acada0f64652321744072d90ebcfd

Analysis

max time kernel
140s
max time network
104s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 03:46

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General

Target

2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe
Size

71KB
MD5

60ec82c346543eedc133c636f5aaa581
SHA1

7138d57a0e3b44cd4aabed244e2a6c7b9f86d02e
SHA256

38402d99cb922940335fbfab9611c326463acada0f64652321744072d90ebcfd
SHA512

436cb6cff75a28e1bd286aaa3d38ab8ded7dbaf727a61735bb683b5992fbdb48a18febd683d68e0e5454acf788a23e8d987e6cb5ac6ba885ae1d5d2387c03f05
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTh:ZhpAyazIlyazTh

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4804	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"	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3132	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe
Token: SeDebugPrivilege	4804	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3132 wrote to memory of 4804	3132	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe	83
PID 3132 wrote to memory of 4804	3132	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe	83
PID 3132 wrote to memory of 4804	3132	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3132
- 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:4804

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

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Downloads

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

Filesize
392KB

MD5
2b421d026e51c3c2777582083568a2e6

SHA1
fb2156bac97bdd9a872440cd248f5f3199be51a1

SHA256
7e6a1b6c78c181ef7f821cb3a7835685229830342a5bbfd55fca63159fbc2962

SHA512
34f4c43782a6b0f14463faa30989437c0ee2602cdb420baa3e050ba738d02dce3c42b131b4f7684a86e86e3fdfedfb6b3b2b3d19ffc7af2c59dc7ebbdc915b27

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C:\Users\Admin\AppData\Local\Temp\D0QYeoigyrdvjJb.exe

Filesize
71KB

MD5
9e42040e2ca5acbaa8e90b57d5ea155e

SHA1
bcf82f08c857146a5bbae94d5bd11a01d5fa6325

SHA256
badcac4695735eececc2deaa7e98c38e7a2b208c1ee53e5ae2b025b04c9c3a96

SHA512
1c717422262434e3d51b488ab04de9100d64981403d0501a04d33a0c7c87130c6a7adcdbf0775666cb800c245ebafc8d8138635ec8ea63dd8e798c7b67d8544e

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads