f1d388cceac1e99bf609819626a68705ad1b8467b4e2aa419dc3b019b72d892d

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
10/05/2024, 07:44

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General

Target

2024-05-10_a4bf1d818e0caceb5f6cfbe6055c4e89_bkransomware.exe
Size

71KB
MD5

a4bf1d818e0caceb5f6cfbe6055c4e89
SHA1

ba90ffe11455fdf6e56d6c08eadeaaee7d59a128
SHA256

f1d388cceac1e99bf609819626a68705ad1b8467b4e2aa419dc3b019b72d892d
SHA512

144a0dd1a5094646497b118c79db7955fa9aa425a451712eb8cc9d7b6d09297a59cd7b250ff9966f0d0af5bbc537c235b0082fde763cb02e32944a708aa35fcc
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTM:ZhpAyazIlyazTM

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1724	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_a4bf1d818e0caceb5f6cfbe6055c4e89_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_a4bf1d818e0caceb5f6cfbe6055c4e89_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2844	2024-05-10_a4bf1d818e0caceb5f6cfbe6055c4e89_bkransomware.exe
Token: SeDebugPrivilege	1724	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 1724	2844	2024-05-10_a4bf1d818e0caceb5f6cfbe6055c4e89_bkransomware.exe	28
PID 2844 wrote to memory of 1724	2844	2024-05-10_a4bf1d818e0caceb5f6cfbe6055c4e89_bkransomware.exe	28
PID 2844 wrote to memory of 1724	2844	2024-05-10_a4bf1d818e0caceb5f6cfbe6055c4e89_bkransomware.exe	28
PID 2844 wrote to memory of 1724	2844	2024-05-10_a4bf1d818e0caceb5f6cfbe6055c4e89_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-10_a4bf1d818e0caceb5f6cfbe6055c4e89_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_a4bf1d818e0caceb5f6cfbe6055c4e89_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2844
- 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:1724

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\5Qb7D1tqJn6OUHp.exe

Filesize
71KB

MD5
84fafbe7729dfa0c7c1b9306471b4131

SHA1
466472ef0869e73aa9792801c8147bf9953b49d0

SHA256
4cf44a7ec504177f88162c7acc0ffe1cd7a6f3aec50617c4009d7627a973aa65

SHA512
2afe7ad8d258551f234189326ce5f349972e76c0842ae5f8d55d3a9bbb9989cdf2375b97e836529fed18392f8bc825eeb18315d8daa00ba6270d0bece5de15d7

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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