ae546bea35aeb22fec4e95e04fbd99e65610206a87a1aaa62425fcf45cf5db06

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
27/06/2024, 15:28

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General

Target

2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe
Size

131KB
MD5

b7b4f78ac1b143d4a03584357faa01f8
SHA1

f9ffe8e67de99b7e52dc62c80584fe9f5469d893
SHA256

ae546bea35aeb22fec4e95e04fbd99e65610206a87a1aaa62425fcf45cf5db06
SHA512

e6ece6e58af1bed7d5eba4eaa113fae9427b239821480649b9c28f62772ba922cf329ab980905abb334ed2a01309d02df8f854a0673cdc114e1fee68f1aa9389
SSDEEP

3072:ZhpAyazIlyazTglTl4uuUFsvcfNML7ezSYObd67F:hZMazwurL7ezXOQp

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2212	eInfcTfDg9bqW4D.exe
2928	CTS.exe

Loads dropped DLL 2 IoCs

pid	Process
2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe
2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.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"	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_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	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe
Token: SeDebugPrivilege	2928	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 2212	2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe	28
PID 2176 wrote to memory of 2212	2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe	28
PID 2176 wrote to memory of 2212	2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe	28
PID 2176 wrote to memory of 2212	2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe	28
PID 2176 wrote to memory of 2928	2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe	29
PID 2176 wrote to memory of 2928	2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe	29
PID 2176 wrote to memory of 2928	2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe	29
PID 2176 wrote to memory of 2928	2176	2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-27_b7b4f78ac1b143d4a03584357faa01f8_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Users\Admin\AppData\Local\Temp\eInfcTfDg9bqW4D.exe
  C:\Users\Admin\AppData\Local\Temp\eInfcTfDg9bqW4D.exe
  2⤵
  - Executes dropped EXE
  PID:2212
- 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:2928

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\eInfcTfDg9bqW4D.exe

Filesize
60KB

MD5
7b112b1fb864c90ec5b65eab21cb40b8

SHA1
e7b73361f722fc7cbb93ef98a8d26e34f4d49767

SHA256
751941b4e09898c31791efeb5f90fc7367c89831d4a98637ed505e40763e287b

SHA512
bf9cdeff39cc4fa48457c55ad02e3856b5b27998535aed801a469252f01e7676462332fa3f93877753e963d037472f615c1fc5fc2e996316621b4e0a180cb5f5

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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