824b105f9759660673334a4972aafa5c1da141972cebbb2eba1d543737a984c3

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
28/06/2024, 22:27

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General

Target

2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe
Size

71KB
MD5

ca67324f74fd9598267e995779dacf28
SHA1

0d2a8aad15de4ad9348d600b0f5587beabf6edee
SHA256

824b105f9759660673334a4972aafa5c1da141972cebbb2eba1d543737a984c3
SHA512

a0d72fec04254b577e322c4d6c0ea2bc22452270d24bfd104052387f7007de827046d660e25d9e47e761e49954fc60c6cc1dc6e6cc844ad0306aa26932995a34
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT0:ZhpAyazIlyazT0

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2936	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"	2024-06-28_ca67324f74fd9598267e995779dacf28_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	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1576	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe
Token: SeDebugPrivilege	2936	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 2936	1576	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe	28
PID 1576 wrote to memory of 2936	1576	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe	28
PID 1576 wrote to memory of 2936	1576	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe	28
PID 1576 wrote to memory of 2936	1576	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1576
- 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:2936

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\bPfCyzNcDc1iour.exe

Filesize
71KB

MD5
39a975894233e9961baa6c8ca76cb481

SHA1
2a3becd677561c9fa4ad5ca419e887352bfb115a

SHA256
94348a93aad7b155c4d88421647720dcc766c479497e4f27287e0d88a384ed20

SHA512
7772d9fb51847ec33fb608d6f3ba5bbcb0f368f21c3decb71f90bfab55978da8c9761e04973ccf943d7ebb961919a73ec0dce88beff7247569e2099d56d5d1ed

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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