705a1f47993b93cf4c84e20e6912333da02c98f0df3bc6c33e15736171fc3bfe

Analysis

max time kernel
134s
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
23-05-2024 19:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-23_c2f878ac348a0fd1778a6a17cef809c3_bkransomware.exe
Size

71KB
MD5

c2f878ac348a0fd1778a6a17cef809c3
SHA1

a4de2e11ecd9bd9ca2e78334b8fffa7039780cb0
SHA256

705a1f47993b93cf4c84e20e6912333da02c98f0df3bc6c33e15736171fc3bfe
SHA512

8269eea8539b4f0f28408a76322002e182a005e95799351f4ad4b87ccf0535e3e4e032fbf9dd11c3d472317e3c0c6a4e9e0d20b2e1809b1b02784d1fec497f0c
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTu/:ZhpAyazIlyazT+

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1320	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"	2024-05-23_c2f878ac348a0fd1778a6a17cef809c3_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	2024-05-23_c2f878ac348a0fd1778a6a17cef809c3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2916	2024-05-23_c2f878ac348a0fd1778a6a17cef809c3_bkransomware.exe
Token: SeDebugPrivilege	1320	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 1320	2916	2024-05-23_c2f878ac348a0fd1778a6a17cef809c3_bkransomware.exe	82
PID 2916 wrote to memory of 1320	2916	2024-05-23_c2f878ac348a0fd1778a6a17cef809c3_bkransomware.exe	82
PID 2916 wrote to memory of 1320	2916	2024-05-23_c2f878ac348a0fd1778a6a17cef809c3_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-23_c2f878ac348a0fd1778a6a17cef809c3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_c2f878ac348a0fd1778a6a17cef809c3_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2916
- 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:1320

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

Loading Replay Monitor...

Downloads

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

Filesize
394KB

MD5
ad6d292eaebf79f43f8640e602b10531

SHA1
feabb700571716ed4854ddbf04efa7d8bb2992b9

SHA256
76e4040fc88c9495e2b19556fe424b67cb79424d05d20f2633ccb930709ae0fc

SHA512
48f537395d0692003dac44ce9de35bac36d47fa2d179491d74fd70491261fcbaa5585f2b8fb4418e9c770c4a9d53fa035c937daed5c48f03eaa2f2b538043685

Download Submit
C:\Users\Admin\AppData\Local\Temp\RVUxrxjeEYM1QiK.exe

Filesize
71KB

MD5
581cb099981a8da3bd10082c355d040f

SHA1
f5bfdb52c8451148c87d112e4617fe72c5c82c49

SHA256
1bbb1f89180925348cc0f5f96ed5b2badb056e7ef55300564afcda0c5e418d24

SHA512
224ac42a8c03f51cafada0d27789a8277891ab6729f3b5b1c2da7a478541ad6029083c5dbdbd9878018e3ecd41684898da88dd9e55cf8905dc3ab2e449d737fa

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads