Malware Analysis Report

2024-10-23 17:13

Sample ID 210727-xnabk1w3x2
Target 2bc33.exe
SHA256 2bc33396eeb4553f5c5187d16d426d71bc7156c9bcc7c7fd7bce43b29447e6ab
Tags
taurus discovery spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2bc33396eeb4553f5c5187d16d426d71bc7156c9bcc7c7fd7bce43b29447e6ab

Threat Level: Known bad

The file 2bc33.exe was found to be: Known bad.

Malicious Activity Summary

taurus discovery spyware stealer trojan

Taurus Stealer

Taurus Stealer Payload

Deletes itself

Reads user/profile data of web browsers

Accesses 2FA software files, possible credential harvesting

Checks installed software on the system

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-07-27 13:05

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-07-27 13:05

Reported

2021-07-27 13:08

Platform

win7v20210408

Max time kernel

43s

Max time network

68s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2bc33.exe"

Signatures

Taurus Stealer

trojan stealer taurus

Taurus Stealer Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses 2FA software files, possible credential harvesting

spyware stealer

Checks installed software on the system

discovery

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2bc33.exe

"C:\Users\Admin\AppData\Local\Temp\2bc33.exe"

C:\Windows\SysWOW64\cmd.exe

/c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\2bc33.exe

C:\Windows\SysWOW64\timeout.exe

timeout /t 3

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 legend0.ru udp

Files

memory/1240-60-0x0000000074D91000-0x0000000074D93000-memory.dmp

memory/1240-61-0x0000000000220000-0x0000000000258000-memory.dmp

memory/1240-62-0x0000000000400000-0x0000000000851000-memory.dmp

memory/864-63-0x0000000000000000-mapping.dmp

memory/1848-64-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-07-27 13:05

Reported

2021-07-27 13:07

Platform

win10v20210410

Max time kernel

10s

Max time network

112s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2bc33.exe"

Signatures

Taurus Stealer

trojan stealer taurus

Taurus Stealer Payload

Description Indicator Process Target
N/A N/A N/A N/A

Reads user/profile data of web browsers

spyware stealer

Accesses 2FA software files, possible credential harvesting

spyware stealer

Checks installed software on the system

discovery

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2256 wrote to memory of 3060 N/A C:\Users\Admin\AppData\Local\Temp\2bc33.exe C:\Windows\SysWOW64\cmd.exe
PID 2256 wrote to memory of 3060 N/A C:\Users\Admin\AppData\Local\Temp\2bc33.exe C:\Windows\SysWOW64\cmd.exe
PID 2256 wrote to memory of 3060 N/A C:\Users\Admin\AppData\Local\Temp\2bc33.exe C:\Windows\SysWOW64\cmd.exe
PID 3060 wrote to memory of 1328 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3060 wrote to memory of 1328 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3060 wrote to memory of 1328 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2bc33.exe

"C:\Users\Admin\AppData\Local\Temp\2bc33.exe"

C:\Windows\SysWOW64\cmd.exe

/c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\2bc33.exe

C:\Windows\SysWOW64\timeout.exe

timeout /t 3

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 legend0.ru udp

Files

memory/2256-114-0x00000000008F0000-0x0000000000A3A000-memory.dmp

memory/2256-115-0x0000000000400000-0x0000000000851000-memory.dmp

memory/3060-116-0x0000000000000000-mapping.dmp

memory/1328-117-0x0000000000000000-mapping.dmp