Overview

overview

7

Static

static

3

Cat Goes F...ng.exe

windows10-ltsc_2021-x64

3

Cat Goes F...43.dll

windows10-ltsc_2021-x64

3

Cat Goes F...er.exe

windows10-ltsc_2021-x64

3

Cat Goes F...pi.dll

windows10-ltsc_2021-x64

3

Cat Goes F...nt.dll

windows10-ltsc_2021-x64

3

Cat Goes F...64.dll

windows10-ltsc_2021-x64

1

STEAMRIP ...es.url

windows10-ltsc_2021-x64

1

_CommonRed...64.exe

windows10-ltsc_2021-x64

7

_CommonRed...up.exe

windows10-ltsc_2021-x64

7

_CommonRed...up.exe

windows10-ltsc_2021-x64

6

_CommonRed...st.exe

windows10-ltsc_2021-x64

6

_CommonRed...st.msi

windows10-ltsc_2021-x64

7

Sharing

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General

  • Target
    Cat.Goes.Fishing-SteamRIP.com.rar
  • Size 55.7MB
  • Sample260827-1bqlrsdm91
  • SHA256 fb22b134998cd146818a0b1636c42ba9fe2bf4fc4db924cbde4960b08056a093
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
discoveryexecutionpersistenceprivilege_escalationransomware

Malware Config

Targets

    • Target
      Cat Goes Fishing/Cat Goes Fishing.exe
    • Size 4.0MB
    • SHA256 20a00c3a7110a83f18c900437588b1ffa272b43a174ea74ed00413ad153809e2
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral1
    • Target
      Cat Goes Fishing/D3DX9_43.dll
    • Size 1.9MB
    • SHA256 0b28546be22c71834501f7d7185ede5d79742457331c7ee09efc14490dd64f5f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral2
    • Target
      Cat Goes Fishing/__Launcher.exe
    • Size 98KB
    • SHA256 015d1aca21c5f6dcc9beaa34ddbdf70795e22c5ac63ee58c80e5df7773ee243d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral3
    • Target
      Cat Goes Fishing/steam_api.dll
    • Size 219KB
    • SHA256 af17df745250d1814eaa274fff7b0faeb43381e6762e026267e5859778477abd
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral4
    • Target
      Cat Goes Fishing/steamclient.dll
    • Size 2.1MB
    • SHA256 387617a117d845353d324f58a2db551647e48db729f94caebf0b8abd83f74a8f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral5
    • Target
      Cat Goes Fishing/steamclient64.dll
    • Size 2.6MB
    • SHA256 e5b8fb20f2a7e30786b73d99c755ce80cdbc50553728eba7eb60e748ab67ef74
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    behavioral6
    • Target
      STEAMRIP ยป Free Pre-installed Steam Games.url
    • Size 219B
    • SHA256 4572f3812daf7bcd347d1a36834c5a9fec1f530093adf688a6ecd9e6092cbf76
    • MD5 SHA1 SHA512 TLSH
    Score
    1/10
    behavioral7
    • Target
      _CommonRedist/VisualCppRedist_AIO_x86_x64.exe
    • Size 30.1MB
    • SHA256 3c188e4651bcc07df2bdb06d69585158797b1bafb91557b09217621628cd5b23
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    7/10
    discoveryexecutionpersistenceransomware

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

    • Executes a VBScript file via the Windows Script Host.

      execution
    behavioral8
    • Target
      _CommonRedist/dotNetFx40_Full_setup.exe
    • Size 868KB
    • SHA256 fa1afff978325f8818ce3a559d67a58297d9154674de7fd8eb03656d93104425
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    7/10
    discovery

    • Executes dropped EXE

    • Loads dropped DLL

    behavioral9
    • Target
      _CommonRedist/dxwebsetup.exe
    • Size 288KB
    • SHA256 2cf71d098c608c56e07f4655855a886c3102553f648df88458df616b26fd612f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    6/10
    discoverypersistence

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral10
    • Target
      _CommonRedist/oalinst.exe
    • Size 790KB
    • SHA256 b8f39714d41e009f75efb183c37100f2cbabb71784bbd243be881ac5b42d86fd
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    6/10
    discovery

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Drops file in System32 directory

    behavioral11
    • Target
      _CommonRedist/xnafx40_redist.msi
    • Size 6.7MB
    • SHA256 47260420773a20443fb1e38a89b7f39c5237a80a842de598e6c8f7f90a3bbd6d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    7/10
    discoverypersistenceprivilege_escalationransomware

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

    behavioral12

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

Visual Basic

1
T1059.005

Windows Command Shell

1
T1059.003

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Event Triggered Execution

1
T1546

Installer Packages

1
T1546.016

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Event Triggered Execution

1
T1546

Installer Packages

1
T1546.016

Defense Evasion

Modify Registry

2
T1112

System Binary Proxy Execution

1
T1218

Msiexec

1
T1218.007

Credential Access

Discovery

Peripheral Device Discovery

2
T1120

Query Registry

5
T1012

System Information Discovery

5
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks