Analysis

  • max time kernel
    151s
  • max time network
    143s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    08-10-2021 23:31

General

  • Target

    Bulk Order_doc.exe

  • Size

    257KB

  • MD5

    96ff74bbd90b3cdae0266ab65e843532

  • SHA1

    272907b9ba208989d0eb3e2da04eb1db0c693079

  • SHA256

    7e3651ea716be4751d8402bdbce0d4457e186e515b0bc88763383677d968e345

  • SHA512

    d8e12b5711b16f05b7640164a7039cf735aae3fe8a1cd1bf3b7af00ace945ea735020e83f40e0168b387f1cd24fabe74d94d93b6718a4dfb85fecb57ca46b9a2

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dn7r

C2

http://www.yourherogarden.net/dn7r/

Decoy

eventphotographerdfw.com

thehalalcoinstaking.com

philipfaziofineart.com

intercoh.com

gaiaseyephotography.com

chatbotforrealestate.com

lovelancemg.com

marlieskasberger.com

elcongoenespanol.info

lepirecredit.com

distribution-concept.com

e99game.com

exit11festival.com

twodollartoothbrushclub.com

cocktailsandlawn.com

performimprove.network

24horas-telefono-11840.com

cosmossify.com

kellenleote.com

perovskite.energy

Signatures

  • Formbook

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

  • Formbook 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.

  • 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:2972
    • C:\Users\Admin\AppData\Local\Temp\Bulk Order_doc.exe
      "C:\Users\Admin\AppData\Local\Temp\Bulk Order_doc.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1796
      • C:\Users\Admin\AppData\Local\Temp\Bulk Order_doc.exe
        "C:\Users\Admin\AppData\Local\Temp\Bulk Order_doc.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:3792
    • C:\Windows\SysWOW64\control.exe
      "C:\Windows\SysWOW64\control.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3496
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\Bulk Order_doc.exe"
        3⤵
          PID:3692

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Local\Temp\nsxB102.tmp\ezdrozcvjii.dll
      MD5

      929773e03b75ef165818c3aac557d026

      SHA1

      118777c4c92c57e48be311a864e9de9fcc399e1e

      SHA256

      147017f2ec63cf901fcec0caebf164087428758c29a64e9145c590624325caba

      SHA512

      2dffcaeb730cb99b43faffde29c7a20bb313d92864e57986a5c3a531f8affe4b34d4bc1622539518ca3d6e775beaa964f6add1ab4acbdad4476cc905aa1b4854

    • memory/2972-128-0x0000000005680000-0x00000000057EF000-memory.dmp
      Filesize

      1.4MB

    • memory/2972-121-0x00000000030E0000-0x00000000031AD000-memory.dmp
      Filesize

      820KB

    • memory/3496-123-0x0000000001380000-0x00000000013A0000-memory.dmp
      Filesize

      128KB

    • memory/3496-127-0x0000000004A80000-0x0000000004B14000-memory.dmp
      Filesize

      592KB

    • memory/3496-126-0x0000000004CE0000-0x0000000005000000-memory.dmp
      Filesize

      3.1MB

    • memory/3496-122-0x0000000000000000-mapping.dmp
    • memory/3496-124-0x0000000000B30000-0x0000000000B5F000-memory.dmp
      Filesize

      188KB

    • memory/3692-125-0x0000000000000000-mapping.dmp
    • memory/3792-119-0x0000000000990000-0x0000000000CB0000-memory.dmp
      Filesize

      3.1MB

    • memory/3792-120-0x0000000000900000-0x0000000000915000-memory.dmp
      Filesize

      84KB

    • memory/3792-117-0x000000000041F200-mapping.dmp
    • memory/3792-116-0x0000000000400000-0x000000000042F000-memory.dmp
      Filesize

      188KB