c4795d2ed959f9cb67890b1898f58f364e3149b8dfaa1320fb5871b26f0759b2

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
31-05-2024 19:58

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General

Target

2024-05-31_bd7554a86d74b970cadb13153e8160de_bkransomware.exe
Size

72KB
MD5

bd7554a86d74b970cadb13153e8160de
SHA1

e308e94af5863a5fbe51a33ef17c6023e2134bb8
SHA256

c4795d2ed959f9cb67890b1898f58f364e3149b8dfaa1320fb5871b26f0759b2
SHA512

34d9cf42d36c7f382e740c9c44e32705a423f68ad8e2a0cb35a383b458fcf0297780705c3369e7ce8fab669a7ba8b8ae78c512081763794684265c14ba71b602
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTo:ZhpAyazIlyazTo

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2836	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"	2024-05-31_bd7554a86d74b970cadb13153e8160de_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-31_bd7554a86d74b970cadb13153e8160de_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2440	2024-05-31_bd7554a86d74b970cadb13153e8160de_bkransomware.exe
Token: SeDebugPrivilege	2836	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 2836	2440	2024-05-31_bd7554a86d74b970cadb13153e8160de_bkransomware.exe	28
PID 2440 wrote to memory of 2836	2440	2024-05-31_bd7554a86d74b970cadb13153e8160de_bkransomware.exe	28
PID 2440 wrote to memory of 2836	2440	2024-05-31_bd7554a86d74b970cadb13153e8160de_bkransomware.exe	28
PID 2440 wrote to memory of 2836	2440	2024-05-31_bd7554a86d74b970cadb13153e8160de_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_bd7554a86d74b970cadb13153e8160de_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_bd7554a86d74b970cadb13153e8160de_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2440
- 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:2836

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\S5jlU1I2FnZs9Op.exe

Filesize
72KB

MD5
14f7be9c498d37ea1107370b9f8624de

SHA1
c29464f7b7eaee9960c3dfb93691af588fcd8812

SHA256
15b0702f2800041e979f402c158dc24688e4900f5185f587faa2926555d87dde

SHA512
7e1022024d3387f70e5a12a65037d07d2ff95346513dabc80240d398d2629a983ee1946622efd6e7c2b54cbc0eba6759b24ccdb2641e455bbebc77d5f313ea50

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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