taurus | ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384

General

Target

ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe
Size

2.3MB
MD5

f259fb1b132c9b2cb699a6f2ae2bc324
SHA1

21039286b53ba1218ce9a9679daf4177c226820f
SHA256

ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384
SHA512

97ba48df6224c87c34c66508f61e47531256a908cec2b535f80c18db71694b37e5943381b0fb8ccc3171279b038901e75f79d5e3f8800ce0d9a8050931497ff4

Score

10^/10

taurus discovery evasion spyware stealer themida trojan

Malware Config

Signatures

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

Taurus Stealer payload 8 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1688-56-0x00000000008A0000-0x0000000000EAA000-memory.dmp	family_taurus_stealer
behavioral1/memory/1688-57-0x00000000008A0000-0x0000000000EAA000-memory.dmp	family_taurus_stealer
behavioral1/memory/1688-58-0x00000000008A0000-0x0000000000EAA000-memory.dmp	family_taurus_stealer
behavioral1/memory/1688-59-0x00000000008A0000-0x0000000000EAA000-memory.dmp	family_taurus_stealer
behavioral1/memory/1688-60-0x00000000008A0000-0x0000000000EAA000-memory.dmp	family_taurus_stealer
behavioral1/memory/1688-61-0x00000000779C0000-0x0000000077B40000-memory.dmp	family_taurus_stealer
behavioral1/memory/1688-62-0x00000000008A0000-0x0000000000EAA000-memory.dmp	family_taurus_stealer
behavioral1/memory/1688-66-0x00000000008A0000-0x0000000000EAA000-memory.dmp	family_taurus_stealer

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1680 cmd.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
T1081

pid	process
1680	cmd.exe

Themida packer 9 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1688-55-0x00000000008A0000-0x0000000000EAA000-memory.dmp	themida
behavioral1/memory/1688-56-0x00000000008A0000-0x0000000000EAA000-memory.dmp	themida
behavioral1/memory/1688-57-0x00000000008A0000-0x0000000000EAA000-memory.dmp	themida
behavioral1/memory/1688-58-0x00000000008A0000-0x0000000000EAA000-memory.dmp	themida
behavioral1/memory/1688-59-0x00000000008A0000-0x0000000000EAA000-memory.dmp	themida
behavioral1/memory/1688-60-0x00000000008A0000-0x0000000000EAA000-memory.dmp	themida
behavioral1/memory/1688-61-0x00000000779C0000-0x0000000077B40000-memory.dmp	themida
behavioral1/memory/1688-62-0x00000000008A0000-0x0000000000EAA000-memory.dmp	themida
behavioral1/memory/1688-66-0x00000000008A0000-0x0000000000EAA000-memory.dmp	themida

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

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe

pid process

1688 ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1700 timeout.exe

pid	process
1688	ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe

pid	process
1700	timeout.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.execmd.exe

description	pid	process	target process
PID 1688 wrote to memory of 1680	1688	ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe	cmd.exe
PID 1688 wrote to memory of 1680	1688	ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe	cmd.exe
PID 1688 wrote to memory of 1680	1688	ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe	cmd.exe
PID 1688 wrote to memory of 1680	1688	ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe	cmd.exe
PID 1680 wrote to memory of 1700	1680	cmd.exe	timeout.exe
PID 1680 wrote to memory of 1700	1680	cmd.exe	timeout.exe
PID 1680 wrote to memory of 1700	1680	cmd.exe	timeout.exe
PID 1680 wrote to memory of 1700	1680	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe
"C:\Users\Admin\AppData\Local\Temp\ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\SysWOW64\cmd.exe
  /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\ad40eb035ec2cceddb5c9876fd4d4af285194d86ebf052c9629b38cb27800384.exe
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1680
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 3
    3⤵
    - Delays execution with timeout.exe
    PID:1700

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

3

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1680-64-0x0000000000000000-mapping.dmp

Download
memory/1688-60-0x00000000008A0000-0x0000000000EAA000-memory.dmp

Filesize
6.0MB

Download
memory/1688-56-0x00000000008A0000-0x0000000000EAA000-memory.dmp

Filesize
6.0MB

Download
memory/1688-57-0x00000000008A0000-0x0000000000EAA000-memory.dmp

Filesize
6.0MB

Download
memory/1688-58-0x00000000008A0000-0x0000000000EAA000-memory.dmp

Filesize
6.0MB

Download
memory/1688-59-0x00000000008A0000-0x0000000000EAA000-memory.dmp

Filesize
6.0MB

Download
memory/1688-54-0x0000000076391000-0x0000000076393000-memory.dmp

Filesize
8KB

Download
memory/1688-61-0x00000000779C0000-0x0000000077B40000-memory.dmp

Filesize
1.5MB

Download
memory/1688-62-0x00000000008A0000-0x0000000000EAA000-memory.dmp

Filesize
6.0MB

Download
memory/1688-63-0x00000000779C0000-0x0000000077B40000-memory.dmp

Filesize
1.5MB

Download
memory/1688-55-0x00000000008A0000-0x0000000000EAA000-memory.dmp

Filesize
6.0MB

Download
memory/1688-66-0x00000000008A0000-0x0000000000EAA000-memory.dmp

Filesize
6.0MB

Download
memory/1688-67-0x00000000779C0000-0x0000000077B40000-memory.dmp

Filesize
1.5MB

Download
memory/1700-65-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads