Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    29-10-2021 18:23

General

  • Target

    Rfq#001.exe

  • Size

    266KB

  • MD5

    8f558dc1338758e9fda83eab8ba9e7a9

  • SHA1

    abbc4650a4ba5a91ffa99bbd0c1238d0e6e166a7

  • SHA256

    cd89124cf3f0de7157d5f500b1dd20603a19ed890773d9cb9b1d1ea5b5372005

  • SHA512

    d67fc009cc4d95f604540927601e9558432940b2bcefc126967f2dca4aefaa52761758c464cbe7ae42b6fb75305d721a814dbfedf48867df54d6cd733f9803df

Score
10/10

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

unzn

C2

http://www.davanamays.com/unzn/

Decoy

xiulf.com

highcountrymortar.com

523561.com

marketingagency.tools

ganmovie.net

nationaalcontactpunt.com

sirrbter.com

begizas.xyz

missimi-fashion.com

munixc.info

daas.support

spaceworbc.com

faithtruthresolve.com

gymkub.com

thegrayverse.xyz

artisanmakefurniture.com

029tryy.com

ijuubx.biz

iphone13promax.club

techuniversus.com

Signatures

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • Xloader Payload 3 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 60 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:3020
    • C:\Users\Admin\AppData\Local\Temp\Rfq#001.exe
      "C:\Users\Admin\AppData\Local\Temp\Rfq#001.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2724
      • C:\Users\Admin\AppData\Local\Temp\Rfq#001.exe
        "C:\Users\Admin\AppData\Local\Temp\Rfq#001.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:3104
    • 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:3956
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\Rfq#001.exe"
        3⤵
          PID:1304

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Command-Line Interface

    1
    T1059

    Discovery

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Local\Temp\nskC381.tmp\yaxgxn.dll
      MD5

      b8ecf1e913206c0ecdf268d2b81d4c49

      SHA1

      9696ff333c746290b27bc16b54b3fd3d8ee3f4b2

      SHA256

      60e1d0dd0ff15ea6d5c4abcae31e7c6f643dac85d3ac5d2d29c1f8a13e6275a0

      SHA512

      27c6ac947bda457ae6c003aea3b00febdb936bf52f069b418ac67ede4d8a6f11ed1623e84daa4b81d161f0702c07631c3b0f635fb076b48b0486a621b96dec86

    • memory/1304-123-0x0000000000000000-mapping.dmp
    • memory/3020-128-0x00000000067C0000-0x0000000006927000-memory.dmp
      Filesize

      1.4MB

    • memory/3020-121-0x0000000005F40000-0x00000000060A1000-memory.dmp
      Filesize

      1.4MB

    • memory/3104-116-0x0000000000400000-0x0000000000429000-memory.dmp
      Filesize

      164KB

    • memory/3104-117-0x000000000041D430-mapping.dmp
    • memory/3104-120-0x00000000009E0000-0x00000000009F1000-memory.dmp
      Filesize

      68KB

    • memory/3104-119-0x0000000000A20000-0x0000000000D40000-memory.dmp
      Filesize

      3.1MB

    • memory/3956-122-0x0000000000000000-mapping.dmp
    • memory/3956-126-0x00000000034F0000-0x0000000003810000-memory.dmp
      Filesize

      3.1MB

    • memory/3956-125-0x0000000000BC0000-0x0000000000BE9000-memory.dmp
      Filesize

      164KB

    • memory/3956-127-0x0000000003350000-0x00000000033E0000-memory.dmp
      Filesize

      576KB

    • memory/3956-124-0x0000000000E10000-0x0000000000E1B000-memory.dmp
      Filesize

      44KB