d444727f4bdd22e3f9f287a36edfea26b0c19a71cb0b688e55824793334e4ff4

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06/06/2024, 09:07

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General

Target

2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe
Size

214KB
MD5

69b8ec7d989d036aa20840a54f3f71f2
SHA1

332ffd529d90548493343577ecf7fed4896ea75f
SHA256

d444727f4bdd22e3f9f287a36edfea26b0c19a71cb0b688e55824793334e4ff4
SHA512

5e73838b265c99d8212cac3553634a308fa0ae68ba0b90d7080168022530a1e38b5b04d56d3b7ecb2f455e9028ab13bb0397a34a4597a1e8b7738a2c119958d0
SSDEEP

6144:xZ8azrfbksLXgy6SixE8DH1jhIQMXqqJebFRfKE:xC08sLQfnr1tkqlbFp

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1908	ytD0FwlQCyiOz9V.exe
2168	CTS.exe

Loads dropped DLL 1 IoCs

pid	Process
1740	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_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"	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_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	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1740	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe
Token: SeDebugPrivilege	2168	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 1908	1740	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe	28
PID 1740 wrote to memory of 1908	1740	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe	28
PID 1740 wrote to memory of 1908	1740	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe	28
PID 1740 wrote to memory of 1908	1740	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe	28
PID 1740 wrote to memory of 2168	1740	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe	30
PID 1740 wrote to memory of 2168	1740	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe	30
PID 1740 wrote to memory of 2168	1740	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe	30
PID 1740 wrote to memory of 2168	1740	2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-06_69b8ec7d989d036aa20840a54f3f71f2_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:1740
- C:\Users\Admin\AppData\Local\Temp\ytD0FwlQCyiOz9V.exe
  C:\Users\Admin\AppData\Local\Temp\ytD0FwlQCyiOz9V.exe
  2⤵
  - Executes dropped EXE
  PID:1908
- 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:2168

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\ytD0FwlQCyiOz9V.exe

Filesize
143KB

MD5
b27ea830fb39bc056e65f9a2260ae216

SHA1
b69e40ee5cabe0721d2d1e9fbdd4088fd87592d6

SHA256
fb7fab836f744d669451dcd38aa7d2a9c74c6af893c258d079439b58abce70d8

SHA512
22cad79d90a949174828ee5e3ce621113591c7c991c55c1a6a44a4555002adeb3bcbd9bab6cfbbfdefd663b76ac2dae96d70a01c527b312c7e8d223334a30219

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/1908-12-0x000007FEF5B03000-0x000007FEF5B04000-memory.dmp

Filesize
4KB

Download
memory/1908-14-0x00000000002A0000-0x00000000002C8000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads