Overview

overview

10

Static

static

1

fvbgr12345.exe

windows7_x64

10

fvbgr12345.exe

windows10_x64

10

Analysis

  • max time kernel
    152s
  • max time network
    144s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    01-10-2021 18:02

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General

  • Target

    fvbgr12345.exe

  • Size

    253KB

  • MD5

    98bea37f0a2af4ef402f7d126ffae77c

  • SHA1

    59c3a8c1014adcea29cd83480e4e5168f8b6ab3b

  • SHA256

    7249d67d49a862e577120d3125e33566c61241969b4f48d701de97a5fe0abc04

  • SHA512

    01ace3811524ebb50fe6259104c8e4d0e4feabf409fe5cca9a29cbe66691a32c56de5d8d79d14ba4ba42189fcd6b8e8b73675e3cafa1fdd027c0afd8cfe033ae

Score
10/10
formbookrv9nratspywarestealertrojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

rv9n

C2

http://www.cjspizza.net/rv9n/

Decoy

olivia-grace.show

zhuwww.com

keiretsu.xyz

olidnh.space

searuleansec.com

2fastrepair.com

brooklynmetalroof.com

scodol.com

novaprint.pro

the-loaner.com

nextroundscap.com

zbwlggs.com

internetautodealer.com

xn--tornrealestate-ekb.com

yunjiuhuo.com

skandinaviskakryptobanken.com

coxivarag.rest

ophthalmologylab.com

zzzzgjcdbqnn98.net

doeful.com

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

    trojanspywarestealerformbook
  • Formbook Payload 3 IoCs
    rat
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 60 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of FindShellTrayWindow 10 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2724
    • C:\Users\Admin\AppData\Local\Temp\fvbgr12345.exe
      "C:\Users\Admin\AppData\Local\Temp\fvbgr12345.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:652
      • C:\Users\Admin\AppData\Local\Temp\fvbgr12345.exe
        "C:\Users\Admin\AppData\Local\Temp\fvbgr12345.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:856
    • C:\Windows\SysWOW64\autoconv.exe
      "C:\Windows\SysWOW64\autoconv.exe"
      2⤵
        PID:392
      • C:\Windows\SysWOW64\NETSTAT.EXE
        "C:\Windows\SysWOW64\NETSTAT.EXE"
        2⤵
        • Suspicious use of SetThreadContext
        • Gathers network information
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:840
        • C:\Windows\SysWOW64\cmd.exe
          /c del "C:\Users\Admin\AppData\Local\Temp\fvbgr12345.exe"
          3⤵
            PID:1164

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      Command-Line Interface

      1
      T1059

      Persistence

      Privilege Escalation

      Defense Evasion

      Credential Access

      Discovery

      System Information Discovery

      2
      T1082

      Lateral Movement

      Collection

      Exfiltration

      Command and Control

      Impact

      Replay Monitor

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      Downloads

      • \Users\Admin\AppData\Local\Temp\nsk57A1.tmp\frdybz.dll
        MD5

        80f04ee6bd3616a113c9af8e1b140e32

        SHA1

        2d5e82ac557faf5f5b411b429187f3bbeaf1d66c

        SHA256

        481ab354c4d374860007496d79ec1ae934668a3286f937fc7c94ee51f86bc704

        SHA512

        122c81c3496f5aec99524370d7ad52ccad7878c58729fe8d958c15b1ef2a0162fa8dfee66aaaed3fbff572d5b1d87b437d4e7e25772fc85f3e7f7363af5b743c

        Download Submit
      • memory/840-123-0x0000000003410000-0x0000000003730000-memory.dmp
        Filesize

        3.1MB

        Download
      • memory/840-120-0x0000000000000000-mapping.dmp
        Download
      • memory/840-122-0x0000000000980000-0x00000000009AF000-memory.dmp
        Filesize

        188KB

        Download
      • memory/840-121-0x0000000001260000-0x000000000126B000-memory.dmp
        Filesize

        44KB

        Download
      • memory/840-125-0x0000000001170000-0x0000000001203000-memory.dmp
        Filesize

        588KB

        Download
      • memory/856-116-0x000000000041F120-mapping.dmp
        Download
      • memory/856-118-0x00000000006D0000-0x00000000006E4000-memory.dmp
        Filesize

        80KB

        Download
      • memory/856-117-0x00000000009C0000-0x0000000000CE0000-memory.dmp
        Filesize

        3.1MB

        Download
      • memory/856-115-0x0000000000400000-0x000000000042F000-memory.dmp
        Filesize

        188KB

        Download
      • memory/1164-124-0x0000000000000000-mapping.dmp
        Download
      • memory/2724-119-0x0000000002CA0000-0x0000000002D73000-memory.dmp
        Filesize

        844KB

        Download
      • memory/2724-126-0x0000000000D00000-0x0000000000DB3000-memory.dmp
        Filesize

        716KB

        Download