Overview

overview

10

Static

static

10

ae30f8849f...ba.exe

windows7-x64

10

ae30f8849f...ba.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    140s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    08/09/2024, 01:17

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General

  • Target

    ae30f8849f76c8517dbb9922a570efd8b2a502292df7f768bfdeebab92aa52ba.exe

  • Size

    71KB

  • MD5

    26ebbf2fff571c90b3af42785d65db3a

  • SHA1

    20ddf85b7a5d92dd7e41fd22237556460f56e98b

  • SHA256

    ae30f8849f76c8517dbb9922a570efd8b2a502292df7f768bfdeebab92aa52ba

  • SHA512

    71b444041b967a33a89cf6c31090e86045f5f683dc577d1eae2696cbdae569e70a061968c1f9ba36d9515be14e2369020c74a2ea2ed2798a77778dfc06c050d9

  • SSDEEP

    1536:Dkes21VCy1nTxSYg3CXTjFWL9SdpIHUc:DDVCyFxSYACXF/pI0

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
  • 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 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ae30f8849f76c8517dbb9922a570efd8b2a502292df7f768bfdeebab92aa52ba.exe
    "C:\Users\Admin\AppData\Local\Temp\ae30f8849f76c8517dbb9922a570efd8b2a502292df7f768bfdeebab92aa52ba.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1192
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bdrzjjxs\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1244
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mtadsgzj.exe" C:\Windows\SysWOW64\bdrzjjxs\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2416
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create bdrzjjxs binPath= "C:\Windows\SysWOW64\bdrzjjxs\mtadsgzj.exe /d\"C:\Users\Admin\AppData\Local\Temp\ae30f8849f76c8517dbb9922a570efd8b2a502292df7f768bfdeebab92aa52ba.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1740
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description bdrzjjxs "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2740
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start bdrzjjxs
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2768
    • 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:1920
  • C:\Windows\SysWOW64\bdrzjjxs\mtadsgzj.exe
    C:\Windows\SysWOW64\bdrzjjxs\mtadsgzj.exe /d"C:\Users\Admin\AppData\Local\Temp\ae30f8849f76c8517dbb9922a570efd8b2a502292df7f768bfdeebab92aa52ba.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2876
    • 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:2760

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

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Downloads

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

    12.8MB

    MD5

    4bc4a5a6ca6007218b8e4faba17680ec

    SHA1

    c865350a8ea0f2cae37ba351a1b9b566f960394e

    SHA256

    14183268773ac8ee6d17ef654b07f5732a52e9aae89fe975d400d936793d3e03

    SHA512

    23b27c2e5a11d04da367c7c606166edaaa348f605f17330830135eea0de93c52c395fc5a648528cd98386196cc510b78df97240f6a5001a2934a9869e670a85f

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  • memory/2760-6-0x0000000000090000-0x00000000000A5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2760-5-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2760-3-0x0000000000090000-0x00000000000A5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2760-8-0x0000000000090000-0x00000000000A5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2760-9-0x0000000000090000-0x00000000000A5000-memory.dmp

    Filesize

    84KB

    Download