6fa30473b6e820704f2e50ab92bc081da5688c6a4cd7a1dfdad08921f4851efa

Analysis

max time kernel
92s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
07/06/2024, 11:42

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe
Size

135KB
MD5

f7b6f03a6456642372ba5162fafd96cf
SHA1

63a21668dd16e8e27c84f6a54afffa64c98ea30a
SHA256

6fa30473b6e820704f2e50ab92bc081da5688c6a4cd7a1dfdad08921f4851efa
SHA512

17dc74a5d8561a4b2e2c81b5d3953b072c9eb8512e02e2b9fe765d5cc74ec27ebf765c12c2f6920c30fe90e0ca32af4f8ef0c4f211e9524f819fd6a81eb349e5
SSDEEP

3072:ZRpAyazIliazTEmxUwkV/LE/QlT/8MmcY8/+G:xZ8azQykVzw2Trmcd/J

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1132	Yho3aCpUrEgoy06.exe
3224	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"	2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2212	2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe
Token: SeDebugPrivilege	3224	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 1132	2212	2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe	82
PID 2212 wrote to memory of 1132	2212	2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe	82
PID 2212 wrote to memory of 1132	2212	2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe	82
PID 2212 wrote to memory of 3224	2212	2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe	83
PID 2212 wrote to memory of 3224	2212	2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe	83
PID 2212 wrote to memory of 3224	2212	2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-07_f7b6f03a6456642372ba5162fafd96cf_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Users\Admin\AppData\Local\Temp\Yho3aCpUrEgoy06.exe
  C:\Users\Admin\AppData\Local\Temp\Yho3aCpUrEgoy06.exe
  2⤵
  - Executes dropped EXE
  PID:1132
- 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:3224

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
0b6c656280dfc796c4bd8334a45aebf5

SHA1
e6299431d05ed2ba93e0262f6c97a56b37b8f2ac

SHA256
c356685899be0f2825c2b2e0b1767267a68e4e7e06c6369290be2b43ce8d6e6f

SHA512
f383dff4b15dcf522db79ec4de375b5c7376bdc71e62ede239016c5f48772b44155fb95d49a1be3447453a2f9fda9c90360c1f7e5a4758083a21dcaa1938d19a

Download Submit
C:\Users\Admin\AppData\Local\Temp\Yho3aCpUrEgoy06.exe

Filesize
64KB

MD5
e97c622b03fb2a2598bf019fbbe29f2c

SHA1
32698bd1d3a0ff6cf441770d1b2b816285068d19

SHA256
5c1af46c7300e87a73dacf6cf41ce397e3f05df6bd9c7e227b4ac59f85769160

SHA512
db70c62fb35a8e5b005f13b57c1ebbf6c465f6ff0524422294c43e27fb4aa79379dc1e300ad11dc2354405c43b192ae06b91c0f525a1f2617e4d14673651a87d

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads