Analysis

  • max time kernel
    146s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    28-09-2021 10:03

General

  • Target

    REVISED OFFER.exe

  • Size

    1MB

  • MD5

    a23d32321c572b877246453f426494d2

  • SHA1

    23f03a3533053b06acc915bcb33e9a8ebfdfa010

  • SHA256

    9748d96e1143a06277d9cc3e9398d366fe3fa21c4316b8134462c42a0020fe87

  • SHA512

    356ddaaf71c6d409450a558a51d8c43a8edcccf283fdf24d1c7d81a10bf21123e1b1abffae63694219bb7b2192704fd885d8a8a7409e481a6629763b7d5e2555

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

c2ue

C2

http://www.heidevelop.xyz/c2ue/

Decoy

isportdata.com

stellarex.energy

hsucollections.com

menuhaisan.com

joe-tzu.com

lumichargemktg.com

uae.tires

rapidcae.com

softwaresystemsolutions.com

s-galaxy.website

daewon-talks.net

northgamesnetwork.com

catalogue-bouyguestele.com

criativanet.com

theseasonalshift.com

actionfoto.online

openmaildoe.com

trashpenguin.com

ennopure.net

azurermine.com

Signatures

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Xloader Payload ⋅ 3 IoCs
  • Deletes itself ⋅ 1 IoCs
  • Suspicious use of SetThreadContext ⋅ 3 IoCs
  • Suspicious behavior: EnumeratesProcesses ⋅ 23 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
    Suspicious use of FindShellTrayWindow
    Suspicious use of SendNotifyMessage
    Suspicious use of WriteProcessMemory
    PID:1244
    • C:\Users\Admin\AppData\Local\Temp\REVISED OFFER.exe
      "C:\Users\Admin\AppData\Local\Temp\REVISED OFFER.exe"
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:1324
      • C:\Users\Admin\AppData\Local\Temp\REVISED OFFER.exe
        "{path}"
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of AdjustPrivilegeToken
        PID:948
    • C:\Windows\SysWOW64\NAPSTAT.EXE
      "C:\Windows\SysWOW64\NAPSTAT.EXE"
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:960
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\REVISED OFFER.exe"
        Deletes itself
        PID:668

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

          Discovery

            Execution

              Exfiltration

                Impact

                  Initial Access

                    Lateral Movement

                      Persistence

                        Privilege Escalation

                          Replay Monitor

                          00:00 00:00

                          Downloads

                          • memory/668-66-0x0000000000000000-mapping.dmp
                          • memory/948-60-0x0000000000400000-0x0000000000429000-memory.dmp
                          • memory/948-63-0x00000000001C0000-0x00000000001D1000-memory.dmp
                          • memory/948-62-0x0000000000AE0000-0x0000000000DE3000-memory.dmp
                          • memory/948-61-0x000000000041D3A0-mapping.dmp
                          • memory/960-67-0x0000000000320000-0x0000000000366000-memory.dmp
                          • memory/960-65-0x0000000000000000-mapping.dmp
                          • memory/960-68-0x00000000000C0000-0x00000000000E9000-memory.dmp
                          • memory/960-69-0x0000000001FA0000-0x00000000022A3000-memory.dmp
                          • memory/960-70-0x0000000075661000-0x0000000075663000-memory.dmp
                          • memory/960-71-0x0000000001EF0000-0x0000000001F80000-memory.dmp
                          • memory/1244-64-0x00000000062F0000-0x000000000645F000-memory.dmp
                          • memory/1244-72-0x0000000004AB0000-0x0000000004B77000-memory.dmp
                          • memory/1324-59-0x0000000000890000-0x00000000008BB000-memory.dmp
                          • memory/1324-58-0x0000000008480000-0x00000000084FE000-memory.dmp
                          • memory/1324-57-0x0000000000550000-0x000000000055E000-memory.dmp
                          • memory/1324-56-0x0000000004C20000-0x0000000004C21000-memory.dmp
                          • memory/1324-54-0x0000000000960000-0x0000000000961000-memory.dmp