taurus | ebbf1f05b4ebc687893c9989688b139424d0fe6242ab490c7282b7bd6299c187

General

Target

f20ea2a9b943dab70be96193ab07a3c2_JaffaCakes118.exe
Size

271KB
MD5

f20ea2a9b943dab70be96193ab07a3c2
SHA1

934d21e7f3906b32940754658d0e63ec977eb129
SHA256

ebbf1f05b4ebc687893c9989688b139424d0fe6242ab490c7282b7bd6299c187
SHA512

3a7733f794f1b2e4e869a3e54811730654dce369b628ff26aae365ccca0f04e5ce428f7eeef21aa371c6cc2eaafd21dd75b8f4b6038a7a8f745cae4e5e77f5e0
SSDEEP

6144:7xSkFxmBijzOoivDUeJcw/omHxfDOyDKJ:gkbmBijKfXKu9zDI

Score

10^/10

taurus credential_access discovery spyware stealer trojan

Malware Config

Signatures

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

Taurus Stealer payload 8 IoCs

resource	yara_rule
behavioral2/memory/3892-2-0x0000000007C20000-0x0000000007C55000-memory.dmp	family_taurus_stealer
behavioral2/memory/3892-3-0x0000000000400000-0x0000000000437000-memory.dmp	family_taurus_stealer
behavioral2/memory/3892-10-0x0000000000400000-0x0000000005FE6000-memory.dmp	family_taurus_stealer
behavioral2/memory/3892-12-0x0000000007C20000-0x0000000007C55000-memory.dmp	family_taurus_stealer
behavioral2/memory/3892-13-0x0000000000400000-0x0000000000437000-memory.dmp	family_taurus_stealer
behavioral2/memory/3892-16-0x0000000000400000-0x0000000005FE6000-memory.dmp	family_taurus_stealer
behavioral2/memory/3892-21-0x0000000000400000-0x0000000000437000-memory.dmp	family_taurus_stealer
behavioral2/memory/3892-20-0x0000000000400000-0x0000000005FE6000-memory.dmp	family_taurus_stealer

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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
T1552.001
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2036	3892	WerFault.exe	81

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f20ea2a9b943dab70be96193ab07a3c2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4404	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3892 wrote to memory of 4792	3892	f20ea2a9b943dab70be96193ab07a3c2_JaffaCakes118.exe	91
PID 3892 wrote to memory of 4792	3892	f20ea2a9b943dab70be96193ab07a3c2_JaffaCakes118.exe	91
PID 3892 wrote to memory of 4792	3892	f20ea2a9b943dab70be96193ab07a3c2_JaffaCakes118.exe	91
PID 4792 wrote to memory of 4404	4792	cmd.exe	94
PID 4792 wrote to memory of 4404	4792	cmd.exe	94
PID 4792 wrote to memory of 4404	4792	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\f20ea2a9b943dab70be96193ab07a3c2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f20ea2a9b943dab70be96193ab07a3c2_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3892
- C:\Windows\SysWOW64\cmd.exe
  /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\f20ea2a9b943dab70be96193ab07a3c2_JaffaCakes118.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4792
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3892 -s 1736
  2⤵
  - Program crash
  PID:2036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3892 -ip 3892
1⤵
PID:740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

3

T1552

Credentials In Files

2

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Browser Information Discovery

Query Registry

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3892-1-0x0000000006380000-0x0000000006480000-memory.dmp

Filesize
1024KB

Download
memory/3892-2-0x0000000007C20000-0x0000000007C55000-memory.dmp

Filesize
212KB

Download
memory/3892-3-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3892-10-0x0000000000400000-0x0000000005FE6000-memory.dmp

Filesize
91.9MB

Download
memory/3892-11-0x0000000006380000-0x0000000006480000-memory.dmp

Filesize
1024KB

Download
memory/3892-12-0x0000000007C20000-0x0000000007C55000-memory.dmp

Filesize
212KB

Download
memory/3892-13-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3892-16-0x0000000000400000-0x0000000005FE6000-memory.dmp

Filesize
91.9MB

Download
memory/3892-21-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3892-20-0x0000000000400000-0x0000000005FE6000-memory.dmp

Filesize
91.9MB

Download

Analysis

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