38402d99cb922940335fbfab9611c326463acada0f64652321744072d90ebcfd

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-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
2196	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"	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.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	2040	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe
Token: SeDebugPrivilege	2196	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 2196	2040	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe	28
PID 2040 wrote to memory of 2196	2040	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe	28
PID 2040 wrote to memory of 2196	2040	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe	28
PID 2040 wrote to memory of 2196	2040	2024-05-10_60ec82c346543eedc133c636f5aaa581_bkransomware.exe	28

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:2040
- 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:2196

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\Temp\tvcBtiAqYKPWawW.exe

Filesize
71KB

MD5
4f251eb7812234403663110ea2882126

SHA1
834880ea0f65f96d37ed9b9f9230bfa9e30da866

SHA256
12ece570351f8d81a022cf8cf0c1b39578e34742609470a4d4f4866a8cfccf73

SHA512
04865e965816479057c49148814236e74b712b53de05c464df42cd6bffb01d8234a198036a4757e3c3df01b9cd9c39c35fb3d1a75298eb2453d6adea7cbd07c2

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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