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Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/12/2022, 06:42

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General

  • Target

    file.exe

  • Size

    186KB

  • MD5

    ff01efd9a32faf896caf2a47462208b4

  • SHA1

    1ca9d0f7a732306e273fa90bb63d84b19f0190a9

  • SHA256

    eb19387896d4cedb4d65a1c97603376051377a420026be5bd14a4b0ec3315d00

  • SHA512

    2a204cc50d39fbbfb584c3ce9bff98898ce1eb53365f09878edfca41ef8b2a74f00f66812aa73ca5e498536ae443f82e89dd0f7c2e4494470f62ebb26fe2d649

  • SSDEEP

    3072:HA9MScArnPrt21KeIqrC5RYl5Z93yDycKXq/Qn4jKKRw+6j4:+MtArp0KeIC5Z9iDy1Xdn4u+M

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
  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2440
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wvdcvqxn\
      2⤵
        PID:2936
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dpymlhqv.exe" C:\Windows\SysWOW64\wvdcvqxn\
        2⤵
          PID:4592
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create wvdcvqxn binPath= "C:\Windows\SysWOW64\wvdcvqxn\dpymlhqv.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2636
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description wvdcvqxn "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4800
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start wvdcvqxn
          2⤵
          • Launches sc.exe
          PID:684
        • 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:220
      • C:\Windows\SysWOW64\wvdcvqxn\dpymlhqv.exe
        C:\Windows\SysWOW64\wvdcvqxn\dpymlhqv.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1704
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:4672
          • 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:1300

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        12.1MB

        MD5

        b4ae7150699945019c0c1b43af9a019f

        SHA1

        9786bdfeda19700eb791c35990265f4a1e8ddb87

        SHA256

        72040c13d663bd1350462a95995255e4313c169b4c28f196f3fed37afe66bd76

        SHA512

        9cdc69699e342d7c427d80322f6d0654b946ccdced51b3de6558702049d9a501312fb650c947ce84781028a003cd820f37ef133a15c8788904b18242854732d3

        Download Submit

      • C:\Windows\SysWOW64\wvdcvqxn\dpymlhqv.exe
        Filesize

        12.1MB

        MD5

        b4ae7150699945019c0c1b43af9a019f

        SHA1

        9786bdfeda19700eb791c35990265f4a1e8ddb87

        SHA256

        72040c13d663bd1350462a95995255e4313c169b4c28f196f3fed37afe66bd76

        SHA512

        9cdc69699e342d7c427d80322f6d0654b946ccdced51b3de6558702049d9a501312fb650c947ce84781028a003cd820f37ef133a15c8788904b18242854732d3

        Download Submit

      • memory/1300-174-0x0000000000F40000-0x0000000001031000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1300-179-0x0000000000F40000-0x0000000001031000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1704-150-0x0000000000400000-0x0000000000464000-memory.dmp

        Filesize

        400KB

        Download

      • memory/1704-149-0x0000000000623000-0x0000000000634000-memory.dmp

        Filesize

        68KB

        Download

      • memory/2440-132-0x0000000000499000-0x00000000004AA000-memory.dmp

        Filesize

        68KB

        Download

      • memory/2440-133-0x0000000002060000-0x0000000002073000-memory.dmp

        Filesize

        76KB

        Download

      • memory/2440-144-0x0000000000499000-0x00000000004AA000-memory.dmp

        Filesize

        68KB

        Download

      • memory/2440-145-0x0000000000400000-0x0000000000464000-memory.dmp

        Filesize

        400KB

        Download

      • memory/2440-134-0x0000000000400000-0x0000000000464000-memory.dmp

        Filesize

        400KB

        Download

      • memory/2440-136-0x0000000002060000-0x0000000002073000-memory.dmp

        Filesize

        76KB

        Download

      • memory/2440-135-0x0000000000499000-0x00000000004AA000-memory.dmp

        Filesize

        68KB

        Download

      • memory/4672-154-0x0000000000D50000-0x0000000000D65000-memory.dmp

        Filesize

        84KB

        Download

      • memory/4672-153-0x0000000000D50000-0x0000000000D65000-memory.dmp

        Filesize

        84KB

        Download

      • memory/4672-152-0x0000000000D50000-0x0000000000D65000-memory.dmp

        Filesize

        84KB

        Download

      • memory/4672-155-0x0000000002C00000-0x0000000002E0F000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/4672-161-0x0000000002E10000-0x0000000002E20000-memory.dmp

        Filesize

        64KB

        Download

      • memory/4672-164-0x00000000035E0000-0x00000000035E5000-memory.dmp

        Filesize

        20KB

        Download

      • memory/4672-167-0x0000000008140000-0x000000000854B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/4672-170-0x00000000035F0000-0x00000000035F7000-memory.dmp

        Filesize

        28KB

        Download

      • memory/4672-158-0x0000000000F20000-0x0000000000F26000-memory.dmp

        Filesize

        24KB

        Download

      • memory/4672-148-0x0000000000D50000-0x0000000000D65000-memory.dmp

        Filesize

        84KB

        Download