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Analysis

  • max time kernel
    55s
  • max time network
    58s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2022, 07:41

General

  • Target

    7b083e02dacacc8c7e04a9cf71c96ede50190d031e6fd9c5c21db08e80efb474.exe

  • Size

    7.4MB

  • MD5

    042d8f91b6cf63017646706b74561b27

  • SHA1

    4bfe69b43b1bfe28702a7ef44cc68127b0b5ae05

  • SHA256

    7b083e02dacacc8c7e04a9cf71c96ede50190d031e6fd9c5c21db08e80efb474

  • SHA512

    73f68f192ec224a138da103eabb0c885b3a07bfb0bd4f5f5774d1294d614535ffefa58d404c1e9b1e0e9268456a198b81b79008b5dcefdfcd12c1c228e186b92

  • SSDEEP

    196608:pAnqVdHABvooPl0+cTY3tZLJejmOAWx1AtdmCimv/SHqUUHv/Swv/SW45qUUpcQE:+wQ5N0+mYZ1itLAdWm8q/Hz5aq/RC7p

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 6 IoCs
  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 5 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 11 IoCs
  • Executes dropped EXE 5 IoCs
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 5 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7b083e02dacacc8c7e04a9cf71c96ede50190d031e6fd9c5c21db08e80efb474.exe
    "C:\Users\Admin\AppData\Local\Temp\7b083e02dacacc8c7e04a9cf71c96ede50190d031e6fd9c5c21db08e80efb474.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Users\Admin\AppData\Local\Temp\cvtres.exe
      C:\Users\Admin\AppData\Local\Temp\\cvtres.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2016
      • C:\Users\Admin\AppData\Local\Temp\cvtres.exe
        "C:\Users\Admin\AppData\Local\Temp\cvtres.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:556
        • C:\Users\Admin\AppData\Local\Temp\cvtres.exe
          "C:\Users\Admin\AppData\Local\Temp\cvtres.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
          4⤵
          • Executes dropped EXE
          PID:996
        • C:\Users\Admin\AppData\Local\Temp\cvtres.exe
          "C:\Users\Admin\AppData\Local\Temp\cvtres.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data1.dmp
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:432
        • C:\Users\Admin\AppData\Local\Temp\cvtres.exe
          "C:\Users\Admin\AppData\Local\Temp\cvtres.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data2.dmp
          4⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook accounts
          PID:1572

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • C:\Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • C:\Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • C:\Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • C:\Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • C:\Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • \Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • \Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • \Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • \Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • \Users\Admin\AppData\Local\Temp\cvtres.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • memory/432-110-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/432-114-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/432-102-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/432-92-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/432-94-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/556-76-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/556-70-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/556-81-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/556-82-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/556-72-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/556-69-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/556-78-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/556-109-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/556-73-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/556-74-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/556-75-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/996-85-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/996-122-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/996-100-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/996-117-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/996-87-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/1572-113-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1572-123-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1572-105-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1572-103-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1572-118-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1572-112-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1736-119-0x0000000075010000-0x00000000755BB000-memory.dmp

    Filesize

    5.7MB

  • memory/1736-115-0x0000000075010000-0x00000000755BB000-memory.dmp

    Filesize

    5.7MB

  • memory/1736-54-0x0000000076411000-0x0000000076413000-memory.dmp

    Filesize

    8KB

  • memory/1736-124-0x0000000000406000-0x0000000000417000-memory.dmp

    Filesize

    68KB

  • memory/2016-56-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2016-116-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2016-57-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2016-59-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2016-120-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2016-121-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2016-61-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB