6cc1847243cedb7ffdb1929f7aae59746327a06ede6e489b1a34a1db7b1543ba

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 06:57

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General

Target

2024-05-09_c590cb6aca2658ace501ae4406785aeb_bkransomware.exe
Size

76KB
MD5

c590cb6aca2658ace501ae4406785aeb
SHA1

161cb930faa239231e20cd1c48d181eb192d914f
SHA256

6cc1847243cedb7ffdb1929f7aae59746327a06ede6e489b1a34a1db7b1543ba
SHA512

7c31ce02ea8b0924aada7447ba940401dfa5ffe50ded4845ad876fbaab45f2a7f81164da3076e317625cf59cdb150e9eebcf92213fb06177fa793ef159f3680c
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTI7rJKg:ZhpAyazIlyazTI7J

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1116	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"	2024-05-09_c590cb6aca2658ace501ae4406785aeb_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-09_c590cb6aca2658ace501ae4406785aeb_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2032	2024-05-09_c590cb6aca2658ace501ae4406785aeb_bkransomware.exe
Token: SeDebugPrivilege	1116	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 1116	2032	2024-05-09_c590cb6aca2658ace501ae4406785aeb_bkransomware.exe	28
PID 2032 wrote to memory of 1116	2032	2024-05-09_c590cb6aca2658ace501ae4406785aeb_bkransomware.exe	28
PID 2032 wrote to memory of 1116	2032	2024-05-09_c590cb6aca2658ace501ae4406785aeb_bkransomware.exe	28
PID 2032 wrote to memory of 1116	2032	2024-05-09_c590cb6aca2658ace501ae4406785aeb_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-09_c590cb6aca2658ace501ae4406785aeb_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_c590cb6aca2658ace501ae4406785aeb_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2032
- 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:1116

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\yVDvWRnfG2Q3PfS.exe

Filesize
76KB

MD5
e7098ce4fbc4bb6eb83b24366a7fe50d

SHA1
412e346cb4cfc96108add96bb7cbc6736989e2e2

SHA256
8760764b2af92ae45d44a457675baaabbe2c6a33d2768fe0ff1c2ee271858475

SHA512
6ebd808ef6a9843ad452e02afa33620e459e20e51611eb238253c810a307c90c48cda48f21d8f59860e683b9872de2870ca6b7260ebb082aa6aea69fccf00ac2

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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