taurus | 83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b

General

Target
83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b.exe
Size 505KB
Sample220302-gr5k3sdda8
SHA256 83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b
MD5 13b24673d1ed4ffce62b623c5842ab37
SHA1 fdcd364e3148b2301d778ebe98a00741feca798c
SHA512 476d3fcfca990c9828691e07a2a07ffe069d5a6f91d32292987df2994d112eedf11cc55526ff0fcc71bf9ea508a5453caf2520ec7e35f7f255032f87780f1d43
MD5 SHA1 SHA512

Score

10^/10

taurus discovery spyware stealer trojan upx

Malware Config

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 3764 created 3216	3764	WerFault.exe	54

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

Taurus Stealer Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3216-134-0x00000000032D0000-0x0000000003306000-memory.dmp	family_taurus_stealer
behavioral2/memory/3216-135-0x0000000000400000-0x0000000000437000-memory.dmp	family_taurus_stealer

Executes dropped EXE 1 IoCs

pid	Process
1344	83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0bmgr.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000600000001ecea-131.dat	upx
behavioral2/files/0x000600000001ecea-130.dat	upx

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1312	3216	WerFault.exe	54

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4036	timeout.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1312	WerFault.exe
1312	WerFault.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	1312	WerFault.exe
Token: SeBackupPrivilege	1312	WerFault.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3216 wrote to memory of 1344	3216	83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b.exe	57
PID 3216 wrote to memory of 1344	3216	83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b.exe	57
PID 3216 wrote to memory of 1344	3216	83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b.exe	57
PID 3216 wrote to memory of 1620	3216	83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b.exe	72
PID 3216 wrote to memory of 1620	3216	83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b.exe	72
PID 3216 wrote to memory of 1620	3216	83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b.exe	72
PID 1620 wrote to memory of 4036	1620	cmd.exe	75
PID 1620 wrote to memory of 4036	1620	cmd.exe	75
PID 1620 wrote to memory of 4036	1620	cmd.exe	75
PID 3764 wrote to memory of 3216	3764	WerFault.exe	54
PID 3764 wrote to memory of 3216	3764	WerFault.exe	54

C:\Users\Admin\AppData\Local\Temp\83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b.exe
"C:\Users\Admin\AppData\Local\Temp\83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3216
- C:\Users\Admin\AppData\Local\Temp\83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0bmgr.exe
  C:\Users\Admin\AppData\Local\Temp\83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0bmgr.exe
  2⤵
  - Executes dropped EXE
  PID:1344
- C:\Windows\SysWOW64\cmd.exe
  /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\83d364c969b64ac72b8f8eb1e66d60c6915d10d385190d29ba6df82c67167f0b.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1620
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 3
    3⤵
    - Delays execution with timeout.exe
    PID:4036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3216 -s 1336
  2⤵
  - Program crash
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3216 -ip 3216
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3764

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

3

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/3216-132-0x00000000033BC000-0x00000000033DD000-memory.dmp

Download

memory/3216-133-0x00000000033BC000-0x00000000033DD000-memory.dmp

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memory/3216-134-0x00000000032D0000-0x0000000003306000-memory.dmp

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memory/3216-135-0x0000000000400000-0x0000000000437000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads