Analysis

  • max time kernel
    150s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    21-10-2021 17:28

General

  • Target

    order 0091.com.exe

  • Size

    427KB

  • MD5

    c6d40c961c2a1940c29ff433fc9217ee

  • SHA1

    a55d2f584620864fe9eb49e7647bb86fc2c20050

  • SHA256

    cf0d36f933310c07f1554db7e6e8a2e79c01ee933717e13f96ae841302306512

  • SHA512

    97c9df9f0492303c86a94e0fb25edac5cbd23e30cc4bcddc00ef47f7b70a7642da57f144bfa505a3ef0cad2de7f8d4fe464e58df931aeb54861e57c84f65fff7

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
  • Deletes itself 1 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 31 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1400
    • C:\Users\Admin\AppData\Local\Temp\order 0091.com.exe
      "C:\Users\Admin\AppData\Local\Temp\order 0091.com.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1100
      • C:\Users\Admin\AppData\Local\Temp\order 0091.com.exe
        "C:\Users\Admin\AppData\Local\Temp\order 0091.com.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:628
    • C:\Windows\SysWOW64\systray.exe
      "C:\Windows\SysWOW64\systray.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1700
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\order 0091.com.exe"
        3⤵
        • Deletes itself
        PID:1288

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\nstC7A4.tmp\brfrqelhtqi.dll
    MD5

    08f8c05553706af957306d9cce346ebb

    SHA1

    bc1ccb5f00c582752d4a5103b122fe5299dad8d4

    SHA256

    628e6ecd0231ccdefd6d684a8d0f07ff16f0213ae04e29adb7ff94853cce2cc3

    SHA512

    3dd9ea6672f45734931e194b066fe042a4d79e6cdd8a8999b874b7a4eaacf09d123e77d996be795b0d6e131fd9555e17fd4af445c1ad8c9a9cd3cb5f0ec1e0a1

  • memory/628-59-0x0000000000890000-0x0000000000B93000-memory.dmp
    Filesize

    3.0MB

  • memory/628-56-0x0000000000400000-0x000000000042F000-memory.dmp
    Filesize

    188KB

  • memory/628-57-0x000000000041F200-mapping.dmp
  • memory/628-60-0x0000000000340000-0x0000000000355000-memory.dmp
    Filesize

    84KB

  • memory/1100-54-0x00000000751A1000-0x00000000751A3000-memory.dmp
    Filesize

    8KB

  • memory/1288-65-0x0000000000000000-mapping.dmp
  • memory/1400-61-0x0000000006A30000-0x0000000006B29000-memory.dmp
    Filesize

    996KB

  • memory/1400-68-0x0000000007980000-0x0000000007AAA000-memory.dmp
    Filesize

    1.2MB

  • memory/1700-62-0x0000000000000000-mapping.dmp
  • memory/1700-63-0x0000000000490000-0x0000000000495000-memory.dmp
    Filesize

    20KB

  • memory/1700-64-0x0000000000110000-0x000000000013F000-memory.dmp
    Filesize

    188KB

  • memory/1700-66-0x0000000001E00000-0x0000000002103000-memory.dmp
    Filesize

    3.0MB

  • memory/1700-67-0x0000000000540000-0x00000000005D4000-memory.dmp
    Filesize

    592KB