Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-1703_x64
  • resource
    win10-20220901-en
  • resource tags

    arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
  • submitted
    27-01-2023 11:31

General

  • Target

    64a8c9065258f70f7567b5d52da2738c6e63580cc64a95273b454f45addf50f5.exe

  • Size

    228KB

  • MD5

    8b37c8c2c2beefd373d98526c700109a

  • SHA1

    e5acac1ffd8ced2e30313a0e93129524dd91c952

  • SHA256

    64a8c9065258f70f7567b5d52da2738c6e63580cc64a95273b454f45addf50f5

  • SHA512

    f41ff902b633f2119c584290f3089922a828d546b1a484659225d2426c70f961993e305c911896d1abf738d87bfcd31dc51d18b1d9e692099d74644e6b2963eb

  • SSDEEP

    6144:/Ya6qkxtNGqZnjsvzTXRDK6wgQ7js0YXQzf8PWFJMNXYSZm3k:/YUkEqZQH9KJgis0uRYSYk

Malware Config

Extracted

Family

formbook

Campaign

u8ow

Decoy

uzhDDUNgg10rOh8rkUMGYiLuNnRWl9gwMQ==

bfkA4IUaSgYi7IA=

ezX5yHeR21O3h2RCgQ==

x3E4ntHeLMGQm0kdTi6PJtjOVS6Em8UaKA==

xJuAYwcZLAfqrVazWjvkirgFxDSf

qrGugLdannLYegX5dCtFMA==

i61nMddueAYi7IA=

RoNMKNhtdDWpeiYoaB37TPiHTLo=

RFj3UHHrDtAktSZhYku36opnsaMbNA==

lx0g+6RPl4jwwNPRPuTD

MyEQ4oGk6vXrMM4V

0IVWH0rfKe1J4nn6J9XB

SYVlN3Zrnq2OaWpDiQ==

fNa0jy3P8KQK25rpmwqd0t8=

UZuSZpW+9ffX9KXzmgqd0t8=

Vxf85YCWvYNZjkcDdCtFMA==

0gG1EzLP7/DrMM4V

WExRGVAEE6YS5tJkTxMhR636+A==

6Tv7U4QdURt1KUI+gw==

ooR7RXgsXPtaEutnaQ3efjIXmfJePavzIA==

Signatures

  • Formbook

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

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • Xloader payload 5 IoCs
  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 54 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3068
    • C:\Users\Admin\AppData\Local\Temp\64a8c9065258f70f7567b5d52da2738c6e63580cc64a95273b454f45addf50f5.exe
      "C:\Users\Admin\AppData\Local\Temp\64a8c9065258f70f7567b5d52da2738c6e63580cc64a95273b454f45addf50f5.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:344
      • C:\Users\Admin\AppData\Local\Temp\rlgffyq.exe
        "C:\Users\Admin\AppData\Local\Temp\rlgffyq.exe" C:\Users\Admin\AppData\Local\Temp\mewbf.gv
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:4624
        • C:\Users\Admin\AppData\Local\Temp\rlgffyq.exe
          "C:\Users\Admin\AppData\Local\Temp\rlgffyq.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:4040
    • C:\Windows\SysWOW64\msdt.exe
      "C:\Windows\SysWOW64\msdt.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Drops file in Program Files directory
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1492
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\rlgffyq.exe"
        3⤵
          PID:4252
        • 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:4976
          • C:\Program Files\Mozilla Firefox\Firefox.exe
            "C:\Program Files\Mozilla Firefox\Firefox.exe"
            3⤵
              PID:4740
          • C:\Program Files (x86)\Npdwhan\Cookiesarmdpv.exe
            "C:\Program Files (x86)\Npdwhan\Cookiesarmdpv.exe"
            2⤵
            • Executes dropped EXE
            PID:4936
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 412
              3⤵
              • Program crash
              PID:4508

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Persistence

        Registry Run Keys / Startup Folder

        1
        T1060

        Defense Evasion

        Modify Registry

        2
        T1112

        Credential Access

        Credentials in Files

        1
        T1081

        Discovery

        Query Registry

        1
        T1012

        System Information Discovery

        2
        T1082

        Collection

        Data from Local System

        1
        T1005

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files (x86)\Npdwhan\Cookiesarmdpv.exe
          Filesize

          6KB

          MD5

          44a7bf46a9c01d3e0486c93767b6cc0f

          SHA1

          3cc13566319f0d73f4931a101799862907cd361d

          SHA256

          b016acfefe7a25f43ec9f9e89bff4d03ea9470941e283b10599acb6769cf76b9

          SHA512

          e36053cba4c316a26a72857959c12db9813f1c1187c03d2ecfb545fb54fde6286302054b353a6aead3bb15429ffb6bc2d1bee68cb65cf8df7c0994ff3ffe0602

        • C:\Program Files (x86)\Npdwhan\Cookiesarmdpv.exe
          Filesize

          6KB

          MD5

          44a7bf46a9c01d3e0486c93767b6cc0f

          SHA1

          3cc13566319f0d73f4931a101799862907cd361d

          SHA256

          b016acfefe7a25f43ec9f9e89bff4d03ea9470941e283b10599acb6769cf76b9

          SHA512

          e36053cba4c316a26a72857959c12db9813f1c1187c03d2ecfb545fb54fde6286302054b353a6aead3bb15429ffb6bc2d1bee68cb65cf8df7c0994ff3ffe0602

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

          40KB

          MD5

          b608d407fc15adea97c26936bc6f03f6

          SHA1

          953e7420801c76393902c0d6bb56148947e41571

          SHA256

          b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

          SHA512

          cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

        • C:\Users\Admin\AppData\Local\Temp\mewbf.gv
          Filesize

          5KB

          MD5

          3c244d8bf6174dbc41727abc9ece7acf

          SHA1

          797f05cbef6c579880841488a2ef85a8064db9fa

          SHA256

          fa3e5994908aed3ee28a15d4f45f396603fd9026db11a342a90c590f5d48a85b

          SHA512

          93030940192dcbe0e83895c89de7d57998199fdd6dc71d4dd76d62b2fbadff9aa2a43aea5797bc3d1b17afeda64104a202bde6255647f04a6cb42b8f5282b253

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

          6KB

          MD5

          44a7bf46a9c01d3e0486c93767b6cc0f

          SHA1

          3cc13566319f0d73f4931a101799862907cd361d

          SHA256

          b016acfefe7a25f43ec9f9e89bff4d03ea9470941e283b10599acb6769cf76b9

          SHA512

          e36053cba4c316a26a72857959c12db9813f1c1187c03d2ecfb545fb54fde6286302054b353a6aead3bb15429ffb6bc2d1bee68cb65cf8df7c0994ff3ffe0602

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

          6KB

          MD5

          44a7bf46a9c01d3e0486c93767b6cc0f

          SHA1

          3cc13566319f0d73f4931a101799862907cd361d

          SHA256

          b016acfefe7a25f43ec9f9e89bff4d03ea9470941e283b10599acb6769cf76b9

          SHA512

          e36053cba4c316a26a72857959c12db9813f1c1187c03d2ecfb545fb54fde6286302054b353a6aead3bb15429ffb6bc2d1bee68cb65cf8df7c0994ff3ffe0602

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

          6KB

          MD5

          44a7bf46a9c01d3e0486c93767b6cc0f

          SHA1

          3cc13566319f0d73f4931a101799862907cd361d

          SHA256

          b016acfefe7a25f43ec9f9e89bff4d03ea9470941e283b10599acb6769cf76b9

          SHA512

          e36053cba4c316a26a72857959c12db9813f1c1187c03d2ecfb545fb54fde6286302054b353a6aead3bb15429ffb6bc2d1bee68cb65cf8df7c0994ff3ffe0602

        • C:\Users\Admin\AppData\Local\Temp\zkoclolbinv.obd
          Filesize

          196KB

          MD5

          7ae7dcc7e63caee1fd3da08154fa103d

          SHA1

          c2c152ce21732ad9be3c06d28de2aa28340a095a

          SHA256

          5395f4b1e2cdd4ab2cc06957df8e8f4264cfea3fbd7e6970ab9e9a6f0ff2d58b

          SHA512

          c707b92084a8bde6c11bfa36519389c017cda33b8e1223a116e3055549d7c713f05d16113f739e466c9d3d03dbc8b32058eee43c3caace8e8a6ab4adfb6c232b

        • memory/344-142-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-133-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-130-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-131-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-132-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-121-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-134-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-135-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-136-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-137-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-138-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-139-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-140-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-141-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-120-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-143-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-144-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-145-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-146-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-147-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-148-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-149-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-150-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-151-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-153-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-154-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-155-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-156-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-152-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-157-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-128-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-159-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-160-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-162-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-161-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-163-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-164-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-165-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-166-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-122-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-123-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-158-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-129-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-124-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-125-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-126-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/344-127-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/1492-279-0x0000000004F50000-0x0000000005270000-memory.dmp
          Filesize

          3.1MB

        • memory/1492-281-0x0000000004BE0000-0x0000000004D71000-memory.dmp
          Filesize

          1.6MB

        • memory/1492-226-0x0000000000000000-mapping.dmp
        • memory/1492-271-0x00000000009F0000-0x0000000000B63000-memory.dmp
          Filesize

          1.4MB

        • memory/1492-272-0x0000000003030000-0x000000000305C000-memory.dmp
          Filesize

          176KB

        • memory/1492-283-0x0000000003030000-0x000000000305C000-memory.dmp
          Filesize

          176KB

        • memory/1492-284-0x0000000004BE0000-0x0000000004D71000-memory.dmp
          Filesize

          1.6MB

        • memory/3068-282-0x0000000005C70000-0x0000000005E00000-memory.dmp
          Filesize

          1.6MB

        • memory/3068-285-0x0000000005C70000-0x0000000005E00000-memory.dmp
          Filesize

          1.6MB

        • memory/3068-225-0x00000000033E0000-0x00000000034C6000-memory.dmp
          Filesize

          920KB

        • memory/4040-224-0x0000000000880000-0x0000000000A0E000-memory.dmp
          Filesize

          1.6MB

        • memory/4040-214-0x0000000000400000-0x000000000042C000-memory.dmp
          Filesize

          176KB

        • memory/4040-215-0x0000000000BB0000-0x0000000000ED0000-memory.dmp
          Filesize

          3.1MB

        • memory/4040-227-0x0000000000400000-0x000000000042C000-memory.dmp
          Filesize

          176KB

        • memory/4040-200-0x0000000000420000-mapping.dmp
        • memory/4252-273-0x0000000000000000-mapping.dmp
        • memory/4624-172-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-171-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-169-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-178-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-181-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-182-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-167-0x0000000000000000-mapping.dmp
        • memory/4624-183-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-180-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-185-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-173-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-174-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-176-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-184-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-186-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-179-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-170-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4624-177-0x0000000077170000-0x00000000772FE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-320-0x0000000000000000-mapping.dmp
        • memory/4976-302-0x0000000000000000-mapping.dmp