Overview

overview

10

Static

static

10

002d23802f...a9.elf

ubuntu-24.04-amd64

006e75ccf3...e6.exe

windows7-x64

3

006e75ccf3...e6.exe

windows10-2004-x64

3

010b63314e...17.exe

windows7-x64

10

010b63314e...17.exe

windows10-2004-x64

10

017f252187...45.exe

windows7-x64

10

017f252187...45.exe

windows10-2004-x64

10

$PLUGINSDI...em.dll

windows7-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

Unmonument...GL.dll

windows7-x64

1

Unmonument...GL.dll

windows10-2004-x64

1

025a7cc996...12.exe

windows7-x64

10

025a7cc996...12.exe

windows10-2004-x64

10

026a0d5ada...ed.exe

windows7-x64

10

026a0d5ada...ed.exe

windows10-2004-x64

10

0296e49137...b6.exe

windows7-x64

10

0296e49137...b6.exe

windows10-2004-x64

10

0382436149...62.exe

windows7-x64

10

0382436149...62.exe

windows10-2004-x64

10

039b7cbbe0...f4.exe

windows7-x64

039b7cbbe0...f4.exe

windows10-2004-x64

03a0e7298d...43.exe

windows7-x64

10

03a0e7298d...43.exe

windows10-2004-x64

10

044d4141fa...83.apk

android-9-x86

6

044d4141fa...83.apk

android-10-x64

6

044d4141fa...83.apk

android-11-x64

1

0488488429...83.exe

windows7-x64

10

0488488429...83.exe

windows10-2004-x64

10

04ba453903...df.elf

ubuntu-22.04-amd64

8

054c0c0eb0...5c.exe

windows7-x64

10

054c0c0eb0...5c.exe

windows10-2004-x64

10

058c3a111c...0bc.js

windows7-x64

10

Resubmissions

10-11-2024 21:28

241110-1bhk6avgrr 10

Analysis

  • max time kernel
    150s
  • max time network
    194s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • submitted
    10-11-2024 21:28

Sharing

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General

  • Target

    038243614941cbef3abaa0524ae4c26cef4b8c902b0f674ebc77b04b1e035662.exe

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    trojantofsee
  • Tofsee family
    tofsee
  • Windows security bypass 2 TTPs 1 IoCs
    evasiontrojan
  • Creates new service(s) 2 TTPs
    persistenceexecution
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

    discovery
  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\038243614941cbef3abaa0524ae4c26cef4b8c902b0f674ebc77b04b1e035662.exe
    "C:\Users\Admin\AppData\Local\Temp\038243614941cbef3abaa0524ae4c26cef4b8c902b0f674ebc77b04b1e035662.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mmvqgeok\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1816
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ehqbbxxu.exe" C:\Windows\SysWOW64\mmvqgeok\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2368
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create mmvqgeok binPath= "C:\Windows\SysWOW64\mmvqgeok\ehqbbxxu.exe /d\"C:\Users\Admin\AppData\Local\Temp\038243614941cbef3abaa0524ae4c26cef4b8c902b0f674ebc77b04b1e035662.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1296
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description mmvqgeok "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2916
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start mmvqgeok
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2776
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2748
  • C:\Windows\SysWOW64\mmvqgeok\ehqbbxxu.exe
    C:\Windows\SysWOW64\mmvqgeok\ehqbbxxu.exe /d"C:\Users\Admin\AppData\Local\Temp\038243614941cbef3abaa0524ae4c26cef4b8c902b0f674ebc77b04b1e035662.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2928
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:2976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Modify Registry

2
T1112

Credential Access

Discovery

System Information Discovery

1
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ehqbbxxu.exe
    Filesize

    12.8MB

    MD5

    046142dec59d0b2bea2eafbdccb8e3c6

    SHA1

    5a81bf2a2505976e975957d4dfe26588a0cdff6d

    SHA256

    842f15f2d4c0829417c7ed2ad0f3a8ea74ea1a5bb7aa431de42cdc31392c6429

    SHA512

    9c9f3ea1161ce857df6e578f73cabc62c6a91f97d28433a46cc975e8022ff7c0be0b545a855256cb6ca6e83c5f4a93e229f8b2d7220ce9467fa8f9beaf78000f

    Download Submit

  • memory/1736-9-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

    Download

  • memory/1736-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

    Download

  • memory/1736-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/1736-1-0x0000000000760000-0x0000000000860000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/1736-8-0x0000000000400000-0x0000000000597000-memory.dmp

    Filesize

    1.6MB

    Download

  • memory/1736-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2928-17-0x0000000000400000-0x0000000000597000-memory.dmp

    Filesize

    1.6MB

    Download

  • memory/2976-31-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-35-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2976-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2976-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2976-20-0x0000000001C60000-0x0000000001E6F000-memory.dmp

    Filesize

    2.1MB

    Download

  • memory/2976-27-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-24-0x00000000000A0000-0x00000000000A6000-memory.dmp

    Filesize

    24KB

    Download

  • memory/2976-23-0x0000000001C60000-0x0000000001E6F000-memory.dmp

    Filesize

    2.1MB

    Download

  • memory/2976-30-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2976-33-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-32-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-36-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-37-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2976-34-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-55-0x0000000000180000-0x0000000000187000-memory.dmp

    Filesize

    28KB

    Download

  • memory/2976-51-0x0000000005850000-0x0000000005C5B000-memory.dmp

    Filesize

    4.0MB

    Download

  • memory/2976-50-0x00000000000C0000-0x00000000000C5000-memory.dmp

    Filesize

    20KB

    Download

  • memory/2976-47-0x00000000000C0000-0x00000000000C5000-memory.dmp

    Filesize

    20KB

    Download

  • memory/2976-46-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-45-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-44-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-43-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-42-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-54-0x0000000005850000-0x0000000005C5B000-memory.dmp

    Filesize

    4.0MB

    Download

  • memory/2976-41-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-40-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-39-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2976-38-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

    Download