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, 23:16

General

  • Target

    b88f010892a5da842122c298f857abf1f34db11f1acee92e99bcbee415636f1c.exe

  • Size

    1.6MB

  • MD5

    315e7e694737de9eb65df31aeb1de027

  • SHA1

    95a9317d38359e71504c60746c751c66fd413749

  • SHA256

    b88f010892a5da842122c298f857abf1f34db11f1acee92e99bcbee415636f1c

  • SHA512

    5827ada2d49b4f0f8f5ff533cf678c93b790427a46fb7dc9cba6e443d47377247a6fde49fdfede3a08ea08ed7ec48e0a41aa82367c4e7a94ff732b191f2f4b16

  • 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\b88f010892a5da842122c298f857abf1f34db11f1acee92e99bcbee415636f1c.exe
    "C:\Users\Admin\AppData\Local\Temp\b88f010892a5da842122c298f857abf1f34db11f1acee92e99bcbee415636f1c.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:4380
    • 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:4176
    • 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:3004
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4380 -s 1668
      2⤵
      • Program crash
      PID:5020
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:3700
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:4928
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4380 -ip 4380
        1⤵
          PID:4956
        • C:\Windows\system32\rundll32.exe
          "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
          1⤵
            PID:4440
          • C:\Windows\System32\svchost.exe
            C:\Windows\System32\svchost.exe -k UnistackSvcGroup
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3516

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                  Filesize

                  1.6MB

                  MD5

                  315e7e694737de9eb65df31aeb1de027

                  SHA1

                  95a9317d38359e71504c60746c751c66fd413749

                  SHA256

                  b88f010892a5da842122c298f857abf1f34db11f1acee92e99bcbee415636f1c

                  SHA512

                  5827ada2d49b4f0f8f5ff533cf678c93b790427a46fb7dc9cba6e443d47377247a6fde49fdfede3a08ea08ed7ec48e0a41aa82367c4e7a94ff732b191f2f4b16

                • C:\Users\Admin\AppData\Local\Temp\grandUIAL3630gSZ2VyKI\information.txt

                  Filesize

                  3KB

                  MD5

                  27516d9680c5747bbe4c419eda3d6966

                  SHA1

                  7a67752b847a68b75c6bbc87933772d50c278a3d

                  SHA256

                  35ecd800c11fa7401a62f5bf60c84c67c95646d90650237df57165fbad077331

                  SHA512

                  53c4bf4a2da2551f19a6c01c0e08815a241111eed05acdaa440d46666e8c749878b4bdfc6e67ff02bd00f0be2e88dd9f865dd1fb91686540a243b45ec1e31c1c

                • C:\Users\Admin\AppData\Local\Temp\posterBoxL3630gSZ2VyKI\QdX9ITDLyCRBWeb Data

                  Filesize

                  92KB

                  MD5

                  9ee081ca0d9c3cd479031e1ff265961b

                  SHA1

                  a2bfa65a2ddcd529a134ea08efd6965bcd0e5665

                  SHA256

                  2a260265cd76d10c19658a7db48e7f328aba6df399e28e2e73642d5904dd73b4

                  SHA512

                  6b9f28e80628042205df78d5393ba53ff9866ee25d92500a806055333f0fe3a93cb1516754b617c42a342d2852cb4f2cd37c849dbfd19bedb71aef5e642c33e6

                • C:\Users\Admin\AppData\Local\Temp\posterBoxL3630gSZ2VyKI\ZunTSaNJLBVfWeb Data

                  Filesize

                  116KB

                  MD5

                  f70aa3fa04f0536280f872ad17973c3d

                  SHA1

                  50a7b889329a92de1b272d0ecf5fce87395d3123

                  SHA256

                  8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                  SHA512

                  30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84

                • memory/3516-120-0x000001343ED90000-0x000001343ED91000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-123-0x000001343ED90000-0x000001343ED91000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-114-0x000001343ED60000-0x000001343ED61000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-115-0x000001343ED90000-0x000001343ED91000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-116-0x000001343ED90000-0x000001343ED91000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-117-0x000001343ED90000-0x000001343ED91000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-118-0x000001343ED90000-0x000001343ED91000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-119-0x000001343ED90000-0x000001343ED91000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-82-0x0000013436670000-0x0000013436680000-memory.dmp

                  Filesize

                  64KB

                • memory/3516-121-0x000001343ED90000-0x000001343ED91000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-122-0x000001343ED90000-0x000001343ED91000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-98-0x0000013436770000-0x0000013436780000-memory.dmp

                  Filesize

                  64KB

                • memory/3516-124-0x000001343ED90000-0x000001343ED91000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-125-0x000001343E9B0000-0x000001343E9B1000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-126-0x000001343E9A0000-0x000001343E9A1000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-128-0x000001343E9B0000-0x000001343E9B1000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-131-0x000001343E9A0000-0x000001343E9A1000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-134-0x000001343E8E0000-0x000001343E8E1000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-146-0x000001343EAE0000-0x000001343EAE1000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-148-0x000001343EAF0000-0x000001343EAF1000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-149-0x000001343EAF0000-0x000001343EAF1000-memory.dmp

                  Filesize

                  4KB

                • memory/3516-150-0x000001343EC00000-0x000001343EC01000-memory.dmp

                  Filesize

                  4KB