taurus | 7f945e1d965b68e1ea68a3e9cd2263dd8b664a5cf618529dda169fb650b6505a

General

Target
INVOICES_BL_AWB_2021.exe
Size 354KB
Sample220221-nfec3shhd6
SHA256 4679648337426622a1f44b99207a036144b1e12391c36733eea10f63a02d0304
MD5 8ccf9291528b147f1ada20fe94dc822a
SHA1 3c379dfb7f6f26a067077cba102ee8d0ca992425
SHA512 549b7ea411857bea6e14a5d840ea030c5610d29306f675de16d6ae033116685f28271140485d0b2e06f7b08f8a5cd9caad2209691b64b26ab4313186bcb0b8b5
MD5 SHA1 SHA512

Score

10^/10

taurus discovery spyware stealer trojan

Malware Config

Signatures

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

Taurus Stealer Payload 3 IoCs

resource	yara_rule
behavioral2/memory/4888-132-0x00000000001C0000-0x00000000001F9000-memory.dmp	family_taurus_stealer
behavioral2/memory/1364-133-0x0000000000400000-0x000000000043A000-memory.dmp	family_taurus_stealer
behavioral2/memory/1364-134-0x0000000000400000-0x000000000043A000-memory.dmp	family_taurus_stealer

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
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4888 set thread context of 1364	4888	INVOICES_BL_AWB_2021.exe	82

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2720	timeout.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4692	svchost.exe
Token: SeCreatePagefilePrivilege	4692	svchost.exe
Token: SeShutdownPrivilege	4692	svchost.exe
Token: SeCreatePagefilePrivilege	4692	svchost.exe
Token: SeShutdownPrivilege	4692	svchost.exe
Token: SeCreatePagefilePrivilege	4692	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4888 wrote to memory of 1364	4888	INVOICES_BL_AWB_2021.exe	82
PID 4888 wrote to memory of 1364	4888	INVOICES_BL_AWB_2021.exe	82
PID 4888 wrote to memory of 1364	4888	INVOICES_BL_AWB_2021.exe	82
PID 4888 wrote to memory of 1364	4888	INVOICES_BL_AWB_2021.exe	82
PID 4888 wrote to memory of 1364	4888	INVOICES_BL_AWB_2021.exe	82
PID 4888 wrote to memory of 1364	4888	INVOICES_BL_AWB_2021.exe	82
PID 4888 wrote to memory of 1364	4888	INVOICES_BL_AWB_2021.exe	82
PID 4888 wrote to memory of 1364	4888	INVOICES_BL_AWB_2021.exe	82
PID 4888 wrote to memory of 1364	4888	INVOICES_BL_AWB_2021.exe	82
PID 1364 wrote to memory of 2240	1364	INVOICES_BL_AWB_2021.exe	83
PID 1364 wrote to memory of 2240	1364	INVOICES_BL_AWB_2021.exe	83
PID 1364 wrote to memory of 2240	1364	INVOICES_BL_AWB_2021.exe	83
PID 2240 wrote to memory of 2720	2240	cmd.exe	85
PID 2240 wrote to memory of 2720	2240	cmd.exe	85
PID 2240 wrote to memory of 2720	2240	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
"C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4888
- C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
  "C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1364
- - C:\Windows\SysWOW64\cmd.exe
    /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2240
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 3
      4⤵
      Delays execution with timeout.exe
      PID:2720

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4692

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1364-133-0x0000000000400000-0x000000000043A000-memory.dmp

Download

memory/1364-134-0x0000000000400000-0x000000000043A000-memory.dmp

Download

memory/4692-135-0x0000020516960000-0x0000020516970000-memory.dmp

Download

memory/4692-136-0x0000020516F20000-0x0000020516F30000-memory.dmp

Download

memory/4692-137-0x00000205195C0000-0x00000205195C4000-memory.dmp

Download

memory/4888-130-0x0000000003013000-0x0000000003036000-memory.dmp

Download

memory/4888-131-0x0000000003013000-0x0000000003036000-memory.dmp

Download

memory/4888-132-0x00000000001C0000-0x00000000001F9000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads