Analysis

  • max time kernel
    299s
  • max time network
    298s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27/03/2025, 13:11

General

  • Target

    vstdlib_s64.dll

  • Size

    10.0MB

  • MD5

    897e2193493cfd989d82f6a559bf1b2a

  • SHA1

    df837bc19bf863ce466588ca3121fed884922b90

  • SHA256

    92958c2e2d940de78a7f5352b00890f291d568816a8fe1b2bf8c572941644ec0

  • SHA512

    761d12c8ebf7df3bbdc7cddf1220065a4e13780057c99b2e43bd653f1c00154ad9e1c8f2236373d54c985ee710c8847813223d244ad170c678593b3ce8e97996

  • SSDEEP

    98304:nt/DDvVWLvBmmZCPPSVHxySAknm58mQzKSawKlhW1TS28kvGGp:t1WLvBzCSVHxySAknm58mHw6hKVGGp

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gt23

Decoy

awkeyesunspotsunfire.top

valbardrc.store

idadari29nice.makeup

haymu.shop

hybf2025.sbs

obbiny.xyz

dlecore.xyz

rabbeat.live

irelily.vip

oahnyn.shop

om-massfadq.top

lizalyn.work

irlo.shop

hostsolver.store

ylastpics.info

adfgt.xyz

cis.club

iskol.fun

riceflashradarlab.xyz

enovhojecnhi.shop

Signatures

  • Formbook

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

  • Formbook family
  • Formbook payload 4 IoCs
  • Adds policy Run key to start application 2 TTPs 1 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Drops file in Windows directory 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 57 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious behavior: MapViewOfSection 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 15 IoCs
  • Suspicious use of FindShellTrayWindow 30 IoCs
  • Suspicious use of SendNotifyMessage 23 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    PID:1204
    • C:\Windows\system32\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\vstdlib_s64.dll,#1
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1284
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
        3⤵
          PID:1220
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
          3⤵
            PID:2932
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
            3⤵
              PID:2328
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
              3⤵
                PID:2336
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
                3⤵
                  PID:1924
                • C:\Windows\System32\calc.exe
                  "C:\Windows\System32\calc.exe"
                  3⤵
                    PID:2296
                  • C:\Windows\System32\svchost.exe
                    "C:\Windows\System32\svchost.exe"
                    3⤵
                      PID:2440
                    • C:\Windows\System32\cmd.exe
                      "C:\Windows\System32\cmd.exe"
                      3⤵
                        PID:2976
                      • C:\Windows\System32\notepad.exe
                        "C:\Windows\System32\notepad.exe"
                        3⤵
                          PID:2696
                        • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
                          "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
                          3⤵
                          • Suspicious use of SetThreadContext
                          • System Location Discovery: System Language Discovery
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious behavior: MapViewOfSection
                          • Suspicious use of AdjustPrivilegeToken
                          • Suspicious use of WriteProcessMemory
                          PID:2320
                          • C:\Windows\SysWOW64\autoconv.exe
                            "C:\Windows\SysWOW64\autoconv.exe"
                            4⤵
                              PID:2640
                            • C:\Windows\SysWOW64\autoconv.exe
                              "C:\Windows\SysWOW64\autoconv.exe"
                              4⤵
                                PID:2632
                              • C:\Windows\SysWOW64\autoconv.exe
                                "C:\Windows\SysWOW64\autoconv.exe"
                                4⤵
                                  PID:2968
                                • C:\Windows\SysWOW64\autoconv.exe
                                  "C:\Windows\SysWOW64\autoconv.exe"
                                  4⤵
                                    PID:2628
                                  • C:\Windows\SysWOW64\autoconv.exe
                                    "C:\Windows\SysWOW64\autoconv.exe"
                                    4⤵
                                      PID:2308
                                    • C:\Windows\SysWOW64\autoconv.exe
                                      "C:\Windows\SysWOW64\autoconv.exe"
                                      4⤵
                                        PID:2744
                                      • C:\Windows\SysWOW64\autoconv.exe
                                        "C:\Windows\SysWOW64\autoconv.exe"
                                        4⤵
                                          PID:2772
                                        • C:\Windows\SysWOW64\autoconv.exe
                                          "C:\Windows\SysWOW64\autoconv.exe"
                                          4⤵
                                            PID:2652
                                          • C:\Windows\SysWOW64\autoconv.exe
                                            "C:\Windows\SysWOW64\autoconv.exe"
                                            4⤵
                                              PID:2720
                                            • C:\Windows\SysWOW64\autoconv.exe
                                              "C:\Windows\SysWOW64\autoconv.exe"
                                              4⤵
                                                PID:1968
                                              • C:\Windows\SysWOW64\autoconv.exe
                                                "C:\Windows\SysWOW64\autoconv.exe"
                                                4⤵
                                                  PID:2608
                                                • C:\Windows\SysWOW64\wuapp.exe
                                                  "C:\Windows\SysWOW64\wuapp.exe"
                                                  4⤵
                                                  • Adds policy Run key to start application
                                                  • Adds Run key to start application
                                                  • Suspicious use of SetThreadContext
                                                  • System Location Discovery: System Language Discovery
                                                  • Modifies Internet Explorer settings
                                                  • Suspicious behavior: EnumeratesProcesses
                                                  • Suspicious behavior: MapViewOfSection
                                                  • Suspicious use of AdjustPrivilegeToken
                                                  • Suspicious use of WriteProcessMemory
                                                  PID:2616
                                                  • C:\Program Files\Mozilla Firefox\Firefox.exe
                                                    "C:\Program Files\Mozilla Firefox\Firefox.exe"
                                                    5⤵
                                                      PID:2136
                                            • C:\Windows\explorer.exe
                                              explorer.exe
                                              1⤵
                                              • Boot or Logon Autostart Execution: Active Setup
                                              • Drops file in Windows directory
                                              • Modifies registry class
                                              • Suspicious behavior: GetForegroundWindowSpam
                                              • Suspicious use of AdjustPrivilegeToken
                                              • Suspicious use of FindShellTrayWindow
                                              • Suspicious use of SendNotifyMessage
                                              PID:3068

                                            Network

                                            MITRE ATT&CK Enterprise v15

                                            Replay Monitor

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                                            Downloads

                                            • C:\Users\Admin\AppData\Roaming\50O70UT1\50Ologim.jpeg

                                              Filesize

                                              27KB

                                              MD5

                                              45917bf41b53bae1253f6c204ff7d996

                                              SHA1

                                              51a7091c486d3c07ca7f2b2c5a1bb62e842f62d2

                                              SHA256

                                              ac262babaaee1cb9091931d0e168d0ec4e4e047d79584198171774317f6bd3d3

                                              SHA512

                                              2aed2fac0aeff7498fec2e64713bd9b91106bef0a7a901399b51a1ea60466cca0c8bb41b21ddcf21c2c3d66efd61d26ff1572f45c07054547410a8614c5bc8e2

                                            • C:\Users\Admin\AppData\Roaming\50O70UT1\50Ologrf.ini

                                              Filesize

                                              40B

                                              MD5

                                              2f245469795b865bdd1b956c23d7893d

                                              SHA1

                                              6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

                                              SHA256

                                              1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

                                              SHA512

                                              909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

                                            • C:\Users\Admin\AppData\Roaming\50O70UT1\50Ologri.ini

                                              Filesize

                                              40B

                                              MD5

                                              d63a82e5d81e02e399090af26db0b9cb

                                              SHA1

                                              91d0014c8f54743bba141fd60c9d963f869d76c9

                                              SHA256

                                              eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

                                              SHA512

                                              38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

                                            • C:\Users\Admin\AppData\Roaming\50O70UT1\50Ologrv.ini

                                              Filesize

                                              40B

                                              MD5

                                              ba3b6bc807d4f76794c4b81b09bb9ba5

                                              SHA1

                                              24cb89501f0212ff3095ecc0aba97dd563718fb1

                                              SHA256

                                              6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

                                              SHA512

                                              ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

                                            • memory/1204-29-0x00000000050F0000-0x000000000524B000-memory.dmp

                                              Filesize

                                              1.4MB

                                            • memory/1204-35-0x00000000025F0000-0x00000000025F1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/1204-33-0x0000000002970000-0x0000000002971000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/1204-32-0x0000000004290000-0x0000000004345000-memory.dmp

                                              Filesize

                                              724KB

                                            • memory/1204-24-0x00000000050F0000-0x000000000524B000-memory.dmp

                                              Filesize

                                              1.4MB

                                            • memory/1204-28-0x0000000004290000-0x0000000004345000-memory.dmp

                                              Filesize

                                              724KB

                                            • memory/1220-0-0x0000000000400000-0x000000000042F000-memory.dmp

                                              Filesize

                                              188KB

                                            • memory/1220-1-0x0000000000400000-0x000000000042F000-memory.dmp

                                              Filesize

                                              188KB

                                            • memory/2320-26-0x0000000000400000-0x000000000042F000-memory.dmp

                                              Filesize

                                              188KB

                                            • memory/2320-27-0x00000000001D0000-0x00000000001E5000-memory.dmp

                                              Filesize

                                              84KB

                                            • memory/2320-22-0x0000000000400000-0x000000000042F000-memory.dmp

                                              Filesize

                                              188KB

                                            • memory/2320-23-0x0000000000180000-0x0000000000195000-memory.dmp

                                              Filesize

                                              84KB

                                            • memory/2320-20-0x0000000000950000-0x0000000000C53000-memory.dmp

                                              Filesize

                                              3.0MB

                                            • memory/2320-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2320-19-0x0000000000400000-0x000000000042F000-memory.dmp

                                              Filesize

                                              188KB

                                            • memory/2616-31-0x0000000000F50000-0x0000000000F5B000-memory.dmp

                                              Filesize

                                              44KB

                                            • memory/2616-36-0x00000000000D0000-0x00000000000FF000-memory.dmp

                                              Filesize

                                              188KB

                                            • memory/2616-30-0x0000000000F50000-0x0000000000F5B000-memory.dmp

                                              Filesize

                                              44KB

                                            • memory/3068-42-0x0000000006CE0000-0x0000000006DB7000-memory.dmp

                                              Filesize

                                              860KB

                                            • memory/3068-61-0x0000000002600000-0x0000000002610000-memory.dmp

                                              Filesize

                                              64KB