taurus_stealer | 38e6f4d8f53e8a38950594d9588cb00218bf46113c51b5241771181a521b9c75

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7v20201028
submitted
09-03-2021 13:03

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General

Target

updatewin.exe
Size

208KB
MD5

9010fa92cc83afe00fab38703e6ffa77
SHA1

4d603ec27d02d84a65d1555c2df0896d7675fafc
SHA256

38e6f4d8f53e8a38950594d9588cb00218bf46113c51b5241771181a521b9c75
SHA512

a39ea249da189fedd5f8d1c13d03693626c70ba08c69c4ec76396d3475c5480e98c8dba1da0b74089252d8d781fc050e4eed9346b648ccbb42e22cf6d15399e8

Score

10^/10

taurus_stealer discovery spyware stealer trojan

Malware Config

Signatures

Taurus Stealer
Taurus is an infostealer first seen in June 2020.
trojan stealer taurus_stealer

Deletes itself 1 IoCs

pid	Process
1548	cmd.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1088	timeout.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	1596	updatewin.exe
Token: SeBackupPrivilege	1596	updatewin.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 1548	1596	updatewin.exe	31
PID 1596 wrote to memory of 1548	1596	updatewin.exe	31
PID 1596 wrote to memory of 1548	1596	updatewin.exe	31
PID 1596 wrote to memory of 1548	1596	updatewin.exe	31
PID 1596 wrote to memory of 1548	1596	updatewin.exe	31
PID 1596 wrote to memory of 1548	1596	updatewin.exe	31
PID 1596 wrote to memory of 1548	1596	updatewin.exe	31
PID 1548 wrote to memory of 1088	1548	cmd.exe	33
PID 1548 wrote to memory of 1088	1548	cmd.exe	33
PID 1548 wrote to memory of 1088	1548	cmd.exe	33
PID 1548 wrote to memory of 1088	1548	cmd.exe	33
PID 1548 wrote to memory of 1088	1548	cmd.exe	33
PID 1548 wrote to memory of 1088	1548	cmd.exe	33
PID 1548 wrote to memory of 1088	1548	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\updatewin.exe
"C:\Users\Admin\AppData\Local\Temp\updatewin.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\SysWOW64\cmd.exe
  /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\updatewin.exe
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1548
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 3
    3⤵
    - Delays execution with timeout.exe
    PID:1088

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1132-3-0x000007FEF7540000-0x000007FEF77BA000-memory.dmp

Filesize
2.5MB

Download
memory/1596-2-0x0000000075781000-0x0000000075783000-memory.dmp

Filesize
8KB

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