c633fecb35c492dc22642a00d4aab8a003be084197cbb7e669613dc5d15df489

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
04/06/2024, 17:26

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General

Target

2024-06-04_44976294bb1b928a214c8e4b8e6decfe_bkransomware.exe
Size

71KB
MD5

44976294bb1b928a214c8e4b8e6decfe
SHA1

eed0563267e21fe98c0a2d3700acc7c3e3bb162b
SHA256

c633fecb35c492dc22642a00d4aab8a003be084197cbb7e669613dc5d15df489
SHA512

bb468ba2e0b3ce574fb4997d860b33c495aa61152bd03bd240a6c0354d83a7ab3094ab0923180538414e47f44bd75d56a8e38cb25d72c0bda37eae6cd4810863
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTa:ZRpAyazIliazTa

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2076	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"	2024-06-04_44976294bb1b928a214c8e4b8e6decfe_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-04_44976294bb1b928a214c8e4b8e6decfe_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2236	2024-06-04_44976294bb1b928a214c8e4b8e6decfe_bkransomware.exe
Token: SeDebugPrivilege	2076	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2076	2236	2024-06-04_44976294bb1b928a214c8e4b8e6decfe_bkransomware.exe	28
PID 2236 wrote to memory of 2076	2236	2024-06-04_44976294bb1b928a214c8e4b8e6decfe_bkransomware.exe	28
PID 2236 wrote to memory of 2076	2236	2024-06-04_44976294bb1b928a214c8e4b8e6decfe_bkransomware.exe	28
PID 2236 wrote to memory of 2076	2236	2024-06-04_44976294bb1b928a214c8e4b8e6decfe_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-04_44976294bb1b928a214c8e4b8e6decfe_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_44976294bb1b928a214c8e4b8e6decfe_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236
- 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:2076

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\DNGtVjPzDKqCE7c.exe

Filesize
71KB

MD5
a566eee162cb986ba9ef741a987ffeb7

SHA1
6abec7a1967990e4f4f5915c92f6b04a2a6eb146

SHA256
1d5b44f3e43dcce12e3ffdc395fcfd71e805620a2c0bb39de0c60c51af319cb8

SHA512
aa341fe13c7774caa5f74b36e739d293d485deb8f4a8133d844266504f5e8b9b9c8c2cfcc7ed24021bc936421403f371eac61770c9f84b849568f7fc633ce930

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads