8bf85a7d95c94c9063caa705a33d760627a3a6e9da2fffa033c366d9eab684d2

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11/05/2024, 03:45

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General

Target

2024-05-11_59c7153d3f1018ca39a558d67534ee40_bkransomware.exe
Size

71KB
MD5

59c7153d3f1018ca39a558d67534ee40
SHA1

8669b393c6e54c84fa990c26d872605cd8560629
SHA256

8bf85a7d95c94c9063caa705a33d760627a3a6e9da2fffa033c366d9eab684d2
SHA512

539169a523f05bbedb71a7df517ff8a96d4c56ad1457c6b026fbad394a5d1403d8c445ee525a1d83176dffa13c457b1192ae6ed38241bb492df90a7888a3a9d2
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTfk:ZhpAyazIlyazTfk

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2020	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"	2024-05-11_59c7153d3f1018ca39a558d67534ee40_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	2024-05-11_59c7153d3f1018ca39a558d67534ee40_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2380	2024-05-11_59c7153d3f1018ca39a558d67534ee40_bkransomware.exe
Token: SeDebugPrivilege	2020	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2020	2380	2024-05-11_59c7153d3f1018ca39a558d67534ee40_bkransomware.exe	28
PID 2380 wrote to memory of 2020	2380	2024-05-11_59c7153d3f1018ca39a558d67534ee40_bkransomware.exe	28
PID 2380 wrote to memory of 2020	2380	2024-05-11_59c7153d3f1018ca39a558d67534ee40_bkransomware.exe	28
PID 2380 wrote to memory of 2020	2380	2024-05-11_59c7153d3f1018ca39a558d67534ee40_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-11_59c7153d3f1018ca39a558d67534ee40_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_59c7153d3f1018ca39a558d67534ee40_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2380
- 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:2020

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\2a88lkQibzC9u3s.exe

Filesize
71KB

MD5
7778c06ddde67b3bf6de481fb0437b16

SHA1
33f744c98151ba1c9a656e23c82a47c0bd94cc3f

SHA256
9ffd211564e4ab8378b4bda573663daac4e4230b42a1cd139163cabc3a717042

SHA512
e45a4d580bab81c1fb56fa5384c5c530abe62c5f56ffbab10cdf5f0e3e5e20fada7bdab67b1daec0eb0368899c6594d22d350db17fc6545950f8611da516b1fc

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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