Analysis

  • max time kernel
    182s
  • max time network
    192s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    08-12-2022 12:09

General

  • Target

    3b33c707e522fc9e706c62687387ddbc.exe

  • Size

    336KB

  • MD5

    3b33c707e522fc9e706c62687387ddbc

  • SHA1

    d98eb37e12d6d7b03fd94933ab5f7dc445c67477

  • SHA256

    7c0561d38ad8d30935cc4750ef54f86ae0e8fedd0858278b6a202cf9589ae4d5

  • SHA512

    7591fdefeff5a11fea8726d784a62229de33378f54cd27841647c53983fca87f055e40f6743bd62d7bb0493bd11b4d3a4c19529f890d924f6872d804b19c8695

  • SSDEEP

    6144:9kwOU0Tna911TEwbdaqga1lpGC1xA67/jYUUEU6LrgJxet8ZJ8EGlu:Cf41y3ajpPA678UrU6LrgfeU8EGY

Malware Config

Extracted

Family

formbook

Campaign

ctap

Decoy

7fuiHU5O7pBugItrXtDlRbQzVNAypQ==

Ioe4Ezkvrkk5SljtGsXC

7SdYmzWqxYzoB10eYg==

87z12VKpqmy0nXHtGsXC

frPRoZR38nhTXl/tGsXC

JybcU3xwAWn21yEPd4XnKA==

B6LTKeV3SeQZAg==

9iFOJSEVtE+I6ea4tn6M72ANGm3K

bROuHdVCVl63QIZuI2etey+ugP0=

25FDh/Be3fhaReK+BwZm9aY+og==

ipYbazKawI7oB10eYg==

Y3ONgI2GHcStmm5WhEZCsE/GlNJovg==

NMjp1U2zzpPoB10eYg==

ZZOygHxoGkBxNTz1RnI=

Hy1dkswBcyQh

94qXZbB1+8ciD4Q=

JUhyQ8Fxl+4gBA==

7wuj4eTJFutgR7+k1R8mIA==

Nj3QJ1RBulY2AMS/1R8mIA==

LjFXk8zI5vgdq8N6ropiNA==

Extracted

Family

xloader

Version

3.Æ…

Campaign

ctap

Decoy

7fuiHU5O7pBugItrXtDlRbQzVNAypQ==

Ioe4Ezkvrkk5SljtGsXC

7SdYmzWqxYzoB10eYg==

87z12VKpqmy0nXHtGsXC

frPRoZR38nhTXl/tGsXC

JybcU3xwAWn21yEPd4XnKA==

B6LTKeV3SeQZAg==

9iFOJSEVtE+I6ea4tn6M72ANGm3K

bROuHdVCVl63QIZuI2etey+ugP0=

25FDh/Be3fhaReK+BwZm9aY+og==

ipYbazKawI7oB10eYg==

Y3ONgI2GHcStmm5WhEZCsE/GlNJovg==

NMjp1U2zzpPoB10eYg==

ZZOygHxoGkBxNTz1RnI=

Hy1dkswBcyQh

94qXZbB1+8ciD4Q=

JUhyQ8Fxl+4gBA==

7wuj4eTJFutgR7+k1R8mIA==

Nj3QJ1RBulY2AMS/1R8mIA==

LjFXk8zI5vgdq8N6ropiNA==

Signatures

  • Formbook

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

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 3 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • 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 21 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1296
    • C:\Users\Admin\AppData\Local\Temp\3b33c707e522fc9e706c62687387ddbc.exe
      "C:\Users\Admin\AppData\Local\Temp\3b33c707e522fc9e706c62687387ddbc.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1292
      • C:\Users\Admin\AppData\Local\Temp\pxzpa.exe
        "C:\Users\Admin\AppData\Local\Temp\pxzpa.exe" C:\Users\Admin\AppData\Local\Temp\bvfschl.llo
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2000
        • C:\Users\Admin\AppData\Local\Temp\pxzpa.exe
          "C:\Users\Admin\AppData\Local\Temp\pxzpa.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:996
          • C:\Windows\SysWOW64\autoconv.exe
            "C:\Windows\SysWOW64\autoconv.exe"
            5⤵
              PID:1204
            • C:\Windows\SysWOW64\ipconfig.exe
              "C:\Windows\SysWOW64\ipconfig.exe"
              5⤵
              • Loads dropped DLL
              • Suspicious use of SetThreadContext
              • Gathers network information
              • Modifies Internet Explorer settings
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:832
              • C:\Program Files\Mozilla Firefox\Firefox.exe
                "C:\Program Files\Mozilla Firefox\Firefox.exe"
                6⤵
                  PID:1884

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Command-Line Interface

      1
      T1059

      Defense Evasion

      Modify Registry

      1
      T1112

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      3
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\bvfschl.llo
        Filesize

        5KB

        MD5

        234ecaa2516da7694806821607cb957f

        SHA1

        5e24bc4f64658bd2c9bbfed88ca6d39d1f84f278

        SHA256

        4559491a1389e02acd69695203a90b6692df27d34a3095ba7f4f753562754f56

        SHA512

        1a0fb05636f903ea3b583ec022b3d1182ee7c7a872abfc99822b633cb7bb2a305200406093430e308ecaaba28b5ed2ed84223812962863592d4d2cd399b18f8c

      • C:\Users\Admin\AppData\Local\Temp\puacwrlc.q
        Filesize

        185KB

        MD5

        ae560924ece971bea500b39cf812665d

        SHA1

        db73b123c1edb1cde8925d784f1f793aacf26f6e

        SHA256

        176f6aaf297901b7100ab3164b6229042dc858876c48c04b7efeef2e71798176

        SHA512

        67fdbe987fa13481daccc6432034ddf4a33f1033a469adbfa347d8361a9290e5dcb183a45085486ef90d1409f991494c26902d85c1c8bf29ee98753dcbb1a8e1

      • C:\Users\Admin\AppData\Local\Temp\pxzpa.exe
        Filesize

        281KB

        MD5

        ca0cca1b24cac955c84585eeefab6944

        SHA1

        517916bf6278c0584e8c50e2deeb5d75c67a413b

        SHA256

        aa4e786e9913c83ff743a8dfce23200f1c9b10a0040bd0d6507194c373607585

        SHA512

        28194e9239b47707438c2e1637d27506335253d5ba051b15e856a0afa1f88984f793c8c8a87b28b322efa7bae7db47d6f0a8f12091275f4cc16a1226ab4bb488

      • C:\Users\Admin\AppData\Local\Temp\pxzpa.exe
        Filesize

        281KB

        MD5

        ca0cca1b24cac955c84585eeefab6944

        SHA1

        517916bf6278c0584e8c50e2deeb5d75c67a413b

        SHA256

        aa4e786e9913c83ff743a8dfce23200f1c9b10a0040bd0d6507194c373607585

        SHA512

        28194e9239b47707438c2e1637d27506335253d5ba051b15e856a0afa1f88984f793c8c8a87b28b322efa7bae7db47d6f0a8f12091275f4cc16a1226ab4bb488

      • C:\Users\Admin\AppData\Local\Temp\pxzpa.exe
        Filesize

        281KB

        MD5

        ca0cca1b24cac955c84585eeefab6944

        SHA1

        517916bf6278c0584e8c50e2deeb5d75c67a413b

        SHA256

        aa4e786e9913c83ff743a8dfce23200f1c9b10a0040bd0d6507194c373607585

        SHA512

        28194e9239b47707438c2e1637d27506335253d5ba051b15e856a0afa1f88984f793c8c8a87b28b322efa7bae7db47d6f0a8f12091275f4cc16a1226ab4bb488

      • \Users\Admin\AppData\Local\Temp\pxzpa.exe
        Filesize

        281KB

        MD5

        ca0cca1b24cac955c84585eeefab6944

        SHA1

        517916bf6278c0584e8c50e2deeb5d75c67a413b

        SHA256

        aa4e786e9913c83ff743a8dfce23200f1c9b10a0040bd0d6507194c373607585

        SHA512

        28194e9239b47707438c2e1637d27506335253d5ba051b15e856a0afa1f88984f793c8c8a87b28b322efa7bae7db47d6f0a8f12091275f4cc16a1226ab4bb488

      • \Users\Admin\AppData\Local\Temp\pxzpa.exe
        Filesize

        281KB

        MD5

        ca0cca1b24cac955c84585eeefab6944

        SHA1

        517916bf6278c0584e8c50e2deeb5d75c67a413b

        SHA256

        aa4e786e9913c83ff743a8dfce23200f1c9b10a0040bd0d6507194c373607585

        SHA512

        28194e9239b47707438c2e1637d27506335253d5ba051b15e856a0afa1f88984f793c8c8a87b28b322efa7bae7db47d6f0a8f12091275f4cc16a1226ab4bb488

      • \Users\Admin\AppData\Local\Temp\sqlite3.dll
        Filesize

        895KB

        MD5

        1eb6acf76a15b74b38333af47dc1218d

        SHA1

        a3fbc817f59b6a8899dc338cc15a75cdd17dfff1

        SHA256

        a5ef3a78eb333b0e6dca194ea711dcbb036119a788ecfe125f05176fb0fb70a3

        SHA512

        717931aa928de150abbb70d523c7dbd472bfa6c511ab55e0b50df8d9661d33635156ed7b750285fa383cdd4064f225ea022f0bead3e066ee2beba84ef5731c15

      • memory/832-77-0x00000000000D0000-0x00000000000FD000-memory.dmp
        Filesize

        180KB

      • memory/832-78-0x0000000000BB0000-0x0000000000EB3000-memory.dmp
        Filesize

        3.0MB

      • memory/832-76-0x0000000000FB0000-0x0000000000FBA000-memory.dmp
        Filesize

        40KB

      • memory/832-74-0x0000000000000000-mapping.dmp
      • memory/832-79-0x0000000000970000-0x00000000009FF000-memory.dmp
        Filesize

        572KB

      • memory/832-81-0x00000000000D0000-0x00000000000FD000-memory.dmp
        Filesize

        180KB

      • memory/996-70-0x00000000003F0000-0x0000000000400000-memory.dmp
        Filesize

        64KB

      • memory/996-68-0x0000000000170000-0x0000000000180000-memory.dmp
        Filesize

        64KB

      • memory/996-67-0x0000000000880000-0x0000000000B83000-memory.dmp
        Filesize

        3.0MB

      • memory/996-72-0x0000000000400000-0x000000000042F000-memory.dmp
        Filesize

        188KB

      • memory/996-73-0x0000000000401000-0x000000000042F000-memory.dmp
        Filesize

        184KB

      • memory/996-66-0x0000000000401000-0x000000000042F000-memory.dmp
        Filesize

        184KB

      • memory/996-65-0x0000000000400000-0x000000000042F000-memory.dmp
        Filesize

        188KB

      • memory/996-63-0x00000000004012B0-mapping.dmp
      • memory/1292-54-0x0000000075531000-0x0000000075533000-memory.dmp
        Filesize

        8KB

      • memory/1296-71-0x0000000006B60000-0x0000000006CAD000-memory.dmp
        Filesize

        1.3MB

      • memory/1296-80-0x0000000006CB0000-0x0000000006E35000-memory.dmp
        Filesize

        1.5MB

      • memory/1296-69-0x0000000004ED0000-0x0000000005025000-memory.dmp
        Filesize

        1.3MB

      • memory/1296-82-0x0000000006CB0000-0x0000000006E35000-memory.dmp
        Filesize

        1.5MB

      • memory/2000-56-0x0000000000000000-mapping.dmp