Resubmissions

16-02-2022 14:43

220216-r31flsdagq 10

16-02-2022 14:37

220216-rzmeksdagk 10

16-02-2022 14:22

220216-rpkg8sdafl 10

Analysis

  • max time kernel
    1801s
  • max time network
    1801s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    16-02-2022 14:37

General

  • Target

    DELIVERY DOCUMENTS.exe

  • Size

    707KB

  • MD5

    427ef5f4e1143ad34c33b26dc4681661

  • SHA1

    673fb1a58e4707ad783d03ca97b3fbd8b4cad73a

  • SHA256

    cd4ee025ad3406b7e572952d42465eee19649cef6c0d3a6acbb0e972096988f4

  • SHA512

    b225afbb07853516f1b741e833e1a63026c0dc5adbb0c3fcfb48f8c6681bc770558499df3d3f5c17df45395dedc3624a1e8fa6498395ac20a82f44e27a61dfbb

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

zqzw

Decoy

laurentmathieu.com

nohohonndana.com

hhmc.info

shophallows.com

blazebunk.com

goodbridge.xyz

flakycloud.com

bakermckenziegroups.com

formation-adistance.com

lovingearthbotanicals.com

tbrservice.plus

heritagehousehotels.com

drwbuildersco.com

lacsghb.com

wain3x.com

dadreview.club

continiutycp.com

cockgirls.com

48mpt.xyz

033skz.xyz

Signatures

  • Formbook

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

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • suricata: ET MALWARE FormBook CnC Checkin (POST) M2

    suricata: ET MALWARE FormBook CnC Checkin (POST) M2

  • Xloader Payload 3 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 5 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 8 IoCs
  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:3024
    • C:\Users\Admin\AppData\Local\Temp\DELIVERY DOCUMENTS.exe
      "C:\Users\Admin\AppData\Local\Temp\DELIVERY DOCUMENTS.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2384
      • C:\Users\Admin\AppData\Local\Temp\DELIVERY DOCUMENTS.exe
        "{path}"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        PID:4688
    • C:\Windows\SysWOW64\NETSTAT.EXE
      "C:\Windows\SysWOW64\NETSTAT.EXE"
      2⤵
      • Adds policy Run key to start application
      • Suspicious use of SetThreadContext
      • Drops file in Program Files directory
      • Gathers network information
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2020
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\DELIVERY DOCUMENTS.exe"
        3⤵
          PID:4572
        • C:\Windows\SysWOW64\cmd.exe
          /c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
          3⤵
            PID:524
          • C:\Program Files\Mozilla Firefox\Firefox.exe
            "C:\Program Files\Mozilla Firefox\Firefox.exe"
            3⤵
              PID:888
          • C:\Program Files (x86)\Pkz7pann8\ljtpuotcd8.exe
            "C:\Program Files (x86)\Pkz7pann8\ljtpuotcd8.exe"
            2⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1240
            • C:\Program Files (x86)\Pkz7pann8\ljtpuotcd8.exe
              "{path}"
              3⤵
              • Executes dropped EXE
              PID:3964
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
          1⤵
          • Drops file in Windows directory
          • Suspicious use of AdjustPrivilegeToken
          PID:1876
        • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
          C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
          1⤵
          • Drops file in Windows directory
          • Suspicious use of AdjustPrivilegeToken
          PID:2220

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Execution

        Command-Line Interface

        1
        T1059

        Persistence

        Registry Run Keys / Startup Folder

        1
        T1060

        Defense Evasion

        Modify Registry

        2
        T1112

        Credential Access

        Credentials in Files

        1
        T1081

        Discovery

        System Information Discovery

        1
        T1082

        Collection

        Data from Local System

        1
        T1005

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files (x86)\Pkz7pann8\ljtpuotcd8.exe
          MD5

          427ef5f4e1143ad34c33b26dc4681661

          SHA1

          673fb1a58e4707ad783d03ca97b3fbd8b4cad73a

          SHA256

          cd4ee025ad3406b7e572952d42465eee19649cef6c0d3a6acbb0e972096988f4

          SHA512

          b225afbb07853516f1b741e833e1a63026c0dc5adbb0c3fcfb48f8c6681bc770558499df3d3f5c17df45395dedc3624a1e8fa6498395ac20a82f44e27a61dfbb

        • C:\Program Files (x86)\Pkz7pann8\ljtpuotcd8.exe
          MD5

          427ef5f4e1143ad34c33b26dc4681661

          SHA1

          673fb1a58e4707ad783d03ca97b3fbd8b4cad73a

          SHA256

          cd4ee025ad3406b7e572952d42465eee19649cef6c0d3a6acbb0e972096988f4

          SHA512

          b225afbb07853516f1b741e833e1a63026c0dc5adbb0c3fcfb48f8c6681bc770558499df3d3f5c17df45395dedc3624a1e8fa6498395ac20a82f44e27a61dfbb

        • C:\Program Files (x86)\Pkz7pann8\ljtpuotcd8.exe
          MD5

          427ef5f4e1143ad34c33b26dc4681661

          SHA1

          673fb1a58e4707ad783d03ca97b3fbd8b4cad73a

          SHA256

          cd4ee025ad3406b7e572952d42465eee19649cef6c0d3a6acbb0e972096988f4

          SHA512

          b225afbb07853516f1b741e833e1a63026c0dc5adbb0c3fcfb48f8c6681bc770558499df3d3f5c17df45395dedc3624a1e8fa6498395ac20a82f44e27a61dfbb

        • C:\Users\Admin\AppData\Local\Temp\DB1
          MD5

          b608d407fc15adea97c26936bc6f03f6

          SHA1

          953e7420801c76393902c0d6bb56148947e41571

          SHA256

          b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

          SHA512

          cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

        • memory/1240-157-0x00000000019F0000-0x00000000019F1000-memory.dmp
          Filesize

          4KB

        • memory/1240-156-0x0000000072D0E000-0x0000000072D0F000-memory.dmp
          Filesize

          4KB

        • memory/1876-135-0x000001E949190000-0x000001E9491A0000-memory.dmp
          Filesize

          64KB

        • memory/1876-164-0x000001E94BD30000-0x000001E94BD31000-memory.dmp
          Filesize

          4KB

        • memory/1876-162-0x000001E94BD70000-0x000001E94BD71000-memory.dmp
          Filesize

          4KB

        • memory/1876-161-0x000001E94BE30000-0x000001E94BE34000-memory.dmp
          Filesize

          16KB

        • memory/1876-136-0x000001E949720000-0x000001E949730000-memory.dmp
          Filesize

          64KB

        • memory/1876-137-0x000001E94BE10000-0x000001E94BE14000-memory.dmp
          Filesize

          16KB

        • memory/2020-149-0x0000000000CD0000-0x0000000000CF9000-memory.dmp
          Filesize

          164KB

        • memory/2020-151-0x0000000001340000-0x00000000013D0000-memory.dmp
          Filesize

          576KB

        • memory/2020-150-0x0000000001460000-0x00000000017AA000-memory.dmp
          Filesize

          3.3MB

        • memory/2020-148-0x0000000000E30000-0x0000000000E3B000-memory.dmp
          Filesize

          44KB

        • memory/2384-133-0x0000000005210000-0x00000000052A2000-memory.dmp
          Filesize

          584KB

        • memory/2384-130-0x0000000000500000-0x00000000005B8000-memory.dmp
          Filesize

          736KB

        • memory/2384-131-0x000000007476E000-0x000000007476F000-memory.dmp
          Filesize

          4KB

        • memory/2384-132-0x0000000005170000-0x000000000520C000-memory.dmp
          Filesize

          624KB

        • memory/2384-134-0x0000000002A90000-0x0000000002A91000-memory.dmp
          Filesize

          4KB

        • memory/3024-147-0x00000000098B0000-0x0000000009A19000-memory.dmp
          Filesize

          1.4MB

        • memory/3024-152-0x000000000AB80000-0x000000000ACF7000-memory.dmp
          Filesize

          1.5MB

        • memory/3024-143-0x00000000097A0000-0x00000000098AF000-memory.dmp
          Filesize

          1.1MB

        • memory/3964-160-0x0000000001940000-0x0000000001C8A000-memory.dmp
          Filesize

          3.3MB

        • memory/4688-146-0x0000000000F60000-0x0000000000F71000-memory.dmp
          Filesize

          68KB

        • memory/4688-145-0x000000000041D000-0x000000000041E000-memory.dmp
          Filesize

          4KB

        • memory/4688-144-0x0000000000400000-0x0000000000429000-memory.dmp
          Filesize

          164KB

        • memory/4688-142-0x0000000000EF0000-0x0000000000F01000-memory.dmp
          Filesize

          68KB

        • memory/4688-140-0x0000000001000000-0x000000000134A000-memory.dmp
          Filesize

          3.3MB

        • memory/4688-141-0x000000000041D000-0x000000000041E000-memory.dmp
          Filesize

          4KB

        • memory/4688-138-0x0000000000400000-0x0000000000429000-memory.dmp
          Filesize

          164KB