38c40baede7dd1c61af8ed36195f224d8cde106a7a6e7e1a12e9d3a2b111d24a

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
07-06-2024 04:22

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General

Target

2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe
Size

71KB
MD5

166adf259cee1b16f6f3009627263977
SHA1

e917fd37f5d3b8443dfb9d9325861f8ff2315d75
SHA256

38c40baede7dd1c61af8ed36195f224d8cde106a7a6e7e1a12e9d3a2b111d24a
SHA512

57456760d645773a5a7c14abc17065b10465c6bd2f91b3dd7fe7fc127d1fc620c7642be4ff5fa22e182b7bba0c1048b8c93f9d3bacb231be173426d3566022f4
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTv7:ZRpAyazIliazTT

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
5020	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_166adf259cee1b16f6f3009627263977_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	896	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe
Token: SeDebugPrivilege	5020	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 896 wrote to memory of 5020	896	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe	82
PID 896 wrote to memory of 5020	896	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe	82
PID 896 wrote to memory of 5020	896	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:896
- 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:5020

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

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Downloads

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

Filesize
394KB

MD5
16be9a12c01d93c531dcd764b6dcc1ca

SHA1
eef54d4ee423e5ddcdb1ec2ab8195dfb69389fba

SHA256
65e423b40863bd8650339fd8b5043cc25a7222f5ea6e8cc5701d8afa8b86c98b

SHA512
f4002e2891608d34e8cd5a76f031695febbd7e0b736356c4aa7b1548a6543cc9450722df7b1518060f065049d276503c3c85deed706998df550bb589a0e3f0a0

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C:\Users\Admin\AppData\Local\Temp\kluuNTOtnqdJy2c.exe

Filesize
71KB

MD5
173e66242e09d6a5825ac86e2aa21138

SHA1
4420282623e68821c7677cef8d5726cdad45ba97

SHA256
73cd76a11555a8e8fa26f793b1e2406de84edf24da8bf58720ddc2e42b7eb399

SHA512
08598c70e25b4a8632a9d5eeb781efa12812de65eafd2212177dea9b937f2bfb7a033731aabc42810dca9fd58a608dcb86f4500203019007b16af2b4042b4b14

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads