Overview

overview

10

Static

static

3

537afa1151...fe.exe

windows7-x64

10

537afa1151...fe.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-09-2024 18:14

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General

  • Target

    537afa11519e38a93a1270a859040f804ab2c894d451d58d80c7e497b78549fe.exe

  • Size

    400KB

  • MD5

    56bcd07602b26cd5c6224dd22bb26b7c

  • SHA1

    c7bd8d8c02a310beaf6abd1c58edaa9d02b5f2a2

  • SHA256

    537afa11519e38a93a1270a859040f804ab2c894d451d58d80c7e497b78549fe

  • SHA512

    a3eb4d77155f9d9533e7969ea737c537776e108e7d943269d21fcc6dc63a58e46d13135549c659d86a6de9123f8add18c49beee14c470b7c57ef3646bef57b7b

  • SSDEEP

    6144:mPAbuY32ftPCe4n79+JtUKzBqddIs00jUS0l/g5VfcA:mcuY32ftPCb79KAUs00j10lWVf

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Signatures

  • Tofsee

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

    trojantofsee
  • 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\537afa11519e38a93a1270a859040f804ab2c894d451d58d80c7e497b78549fe.exe
    "C:\Users\Admin\AppData\Local\Temp\537afa11519e38a93a1270a859040f804ab2c894d451d58d80c7e497b78549fe.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2080
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tqkcavql\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1944
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qzfqodv.exe" C:\Windows\SysWOW64\tqkcavql\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2408
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create tqkcavql binPath= "C:\Windows\SysWOW64\tqkcavql\qzfqodv.exe /d\"C:\Users\Admin\AppData\Local\Temp\537afa11519e38a93a1270a859040f804ab2c894d451d58d80c7e497b78549fe.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2944
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description tqkcavql "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2328
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start tqkcavql
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2892
    • 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:2772
  • C:\Windows\SysWOW64\tqkcavql\qzfqodv.exe
    C:\Windows\SysWOW64\tqkcavql\qzfqodv.exe /d"C:\Users\Admin\AppData\Local\Temp\537afa11519e38a93a1270a859040f804ab2c894d451d58d80c7e497b78549fe.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2920
    • 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:3004

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\qzfqodv.exe
    Filesize

    12.4MB

    MD5

    9553b4cee3191751d003ba1b98231a57

    SHA1

    a59ea47d38d3170d30e242f7941bbfbad86bddf6

    SHA256

    a5e1950f6f47aeb1dc0e677a59bb1d56ab3274fdd1f2c5c2d026c9aea18bf3cb

    SHA512

    a8599bdf9cc4008a1c3c1879d6a6aeca1329a1952688a9c1631d4441beaa70a5cc23720f88194fbd1361ced9126bb0865d71d71a50f20467c22c8f2f516b304e

    Download Submit

  • memory/2080-11-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2080-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

    Filesize

    76KB

    Download

  • memory/2080-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2080-1-0x0000000000290000-0x0000000000390000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/2080-8-0x0000000000400000-0x00000000005F8000-memory.dmp

    Filesize

    2.0MB

    Download

  • memory/2080-9-0x00000000001B0000-0x00000000001C3000-memory.dmp

    Filesize

    76KB

    Download

  • memory/2080-10-0x0000000000290000-0x0000000000390000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/2920-18-0x0000000000400000-0x00000000005F8000-memory.dmp

    Filesize

    2.0MB

    Download

  • memory/3004-46-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-43-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3004-15-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/3004-19-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/3004-28-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-25-0x00000000001A0000-0x00000000001A6000-memory.dmp

    Filesize

    24KB

    Download

  • memory/3004-24-0x0000000001A30000-0x0000000001C3F000-memory.dmp

    Filesize

    2.1MB

    Download

  • memory/3004-21-0x0000000001A30000-0x0000000001C3F000-memory.dmp

    Filesize

    2.1MB

    Download

  • memory/3004-37-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-36-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/3004-45-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-47-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-44-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-12-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/3004-42-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-41-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-40-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-39-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-52-0x00000000053C0000-0x00000000057CB000-memory.dmp

    Filesize

    4.0MB

    Download

  • memory/3004-51-0x00000000001D0000-0x00000000001D5000-memory.dmp

    Filesize

    20KB

    Download

  • memory/3004-48-0x00000000001D0000-0x00000000001D5000-memory.dmp

    Filesize

    20KB

    Download

  • memory/3004-56-0x00000000001E0000-0x00000000001E7000-memory.dmp

    Filesize

    28KB

    Download

  • memory/3004-55-0x00000000053C0000-0x00000000057CB000-memory.dmp

    Filesize

    4.0MB

    Download

  • memory/3004-38-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-35-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-34-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-33-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-32-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3004-31-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

    Download