Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/12/2023, 23:18

General

  • Target

    3feeb88c54bfb189b3b36057f16e019d6f0fe30d5db288d3b502a02dbd276dc2.exe

  • Size

    1.6MB

  • MD5

    ff01bbe54ac5a71e07941087f55a5938

  • SHA1

    b221f82264abd877f58d0599f81786edf7e2c9c2

  • SHA256

    3feeb88c54bfb189b3b36057f16e019d6f0fe30d5db288d3b502a02dbd276dc2

  • SHA512

    5c4f445389cae04a7c239ca1cbdf0c2d4bc50d76ea48630c8f85c7ab50df0cf4718e3da82bb2ce30a61a194de07780dc522390b7f1115688bd901d4d6135f634

  • SSDEEP

    49152:80ceOGgUYYEmluRKYoFh4kGWusbQnIyDi1E1uonTKi/OjCCNG:1XOGgUYC4RKXFhrusbaDkE1u

Malware Config

Signatures

  • Drops startup file 1 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3feeb88c54bfb189b3b36057f16e019d6f0fe30d5db288d3b502a02dbd276dc2.exe
    "C:\Users\Admin\AppData\Local\Temp\3feeb88c54bfb189b3b36057f16e019d6f0fe30d5db288d3b502a02dbd276dc2.exe"
    1⤵
    • Drops startup file
    • Accesses Microsoft Outlook profiles
    • Adds Run key to start application
    • Drops file in System32 directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:436
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 HR" /sc HOURLY /rl HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:5008
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 LG" /sc ONLOGON /rl HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:4568
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 1572
      2⤵
      • Program crash
      PID:3104
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:656
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:4364
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 436 -ip 436
        1⤵
          PID:4184
        • C:\Windows\system32\rundll32.exe
          "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
          1⤵
            PID:1572
          • C:\Windows\System32\svchost.exe
            C:\Windows\System32\svchost.exe -k UnistackSvcGroup
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2920

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                  Filesize

                  1.6MB

                  MD5

                  ff01bbe54ac5a71e07941087f55a5938

                  SHA1

                  b221f82264abd877f58d0599f81786edf7e2c9c2

                  SHA256

                  3feeb88c54bfb189b3b36057f16e019d6f0fe30d5db288d3b502a02dbd276dc2

                  SHA512

                  5c4f445389cae04a7c239ca1cbdf0c2d4bc50d76ea48630c8f85c7ab50df0cf4718e3da82bb2ce30a61a194de07780dc522390b7f1115688bd901d4d6135f634

                • C:\Users\Admin\AppData\Local\Temp\grandUIAS2qyfjj10s4qb\information.txt

                  Filesize

                  3KB

                  MD5

                  69616b466cfa5cad383e9690f8ebfcf8

                  SHA1

                  ca4f5efb1a2dab1e85885a3d414fd8e49027e9f2

                  SHA256

                  8d97f35a8bb8a11c0575f775b79d178f9d4f5fcb9190e2671834a1fcefe3a531

                  SHA512

                  1018d7ae98e020c21fb373bc3617ec9ab6ecd80f01a91228ee16ff12200cdeff5dc496d31e82a02528a058cabbe7347ffbae8f40e10047d9b1738d2b100a0d1b

                • C:\Users\Admin\AppData\Local\Temp\posterBoxS2qyfjj10s4qb\QdX9ITDLyCRBWeb Data

                  Filesize

                  92KB

                  MD5

                  5bca7f96843d97e2c39afbb8b5f9865b

                  SHA1

                  e64666a5d705a768e2351621577a386400111251

                  SHA256

                  e25c46923271e687a972edfcf511d7685c24ce2e509a5b10d0ba4cd6f2bfeab2

                  SHA512

                  40771d495b407c0ede8ad3e5d8e77cf588a607426f0597f0c10a81ec7b2614f28a66a1c5ff36bf8bf6905bdc6b537d8cc5a749725adfc57f72ec3c9ee17f76d3

                • C:\Users\Admin\AppData\Local\Temp\posterBoxS2qyfjj10s4qb\ZunTSaNJLBVfWeb Data

                  Filesize

                  116KB

                  MD5

                  f70aa3fa04f0536280f872ad17973c3d

                  SHA1

                  50a7b889329a92de1b272d0ecf5fce87395d3123

                  SHA256

                  8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                  SHA512

                  30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84

                • memory/2920-120-0x000001DEBDE80000-0x000001DEBDE81000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-123-0x000001DEBDE80000-0x000001DEBDE81000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-114-0x000001DEBDE50000-0x000001DEBDE51000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-115-0x000001DEBDE80000-0x000001DEBDE81000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-116-0x000001DEBDE80000-0x000001DEBDE81000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-117-0x000001DEBDE80000-0x000001DEBDE81000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-118-0x000001DEBDE80000-0x000001DEBDE81000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-119-0x000001DEBDE80000-0x000001DEBDE81000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-82-0x000001DEB5760000-0x000001DEB5770000-memory.dmp

                  Filesize

                  64KB

                • memory/2920-121-0x000001DEBDE80000-0x000001DEBDE81000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-122-0x000001DEBDE80000-0x000001DEBDE81000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-98-0x000001DEB5860000-0x000001DEB5870000-memory.dmp

                  Filesize

                  64KB

                • memory/2920-124-0x000001DEBDE80000-0x000001DEBDE81000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-125-0x000001DEBDAA0000-0x000001DEBDAA1000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-126-0x000001DEBDA90000-0x000001DEBDA91000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-128-0x000001DEBDAA0000-0x000001DEBDAA1000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-131-0x000001DEBDA90000-0x000001DEBDA91000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-134-0x000001DEBD9D0000-0x000001DEBD9D1000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-146-0x000001DEBDBD0000-0x000001DEBDBD1000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-148-0x000001DEBDBE0000-0x000001DEBDBE1000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-149-0x000001DEBDBE0000-0x000001DEBDBE1000-memory.dmp

                  Filesize

                  4KB

                • memory/2920-150-0x000001DEBDCF0000-0x000001DEBDCF1000-memory.dmp

                  Filesize

                  4KB