Analysis

  • max time kernel
    120s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    01-10-2024 08:04

General

  • Target

    scan_file34975UU.scr.exe

  • Size

    748KB

  • MD5

    9c41200534d2961710d7686f23fd8853

  • SHA1

    e427669e7752d41b7a833c796bb4028f7260f04d

  • SHA256

    b066d69e936c241d52a4dc708223002e8843385d5e04faece3016abd4027c215

  • SHA512

    32bb1f6f63734451652f65cff8d0acf9b61a8037c27570d73fb4a1b022d3fe046f9b71135741357dfcfc9733656cff5ed8d02c55b949accce718a7dd17fcd8fc

  • SSDEEP

    12288:5697qm4w3LOFEQ+0/Vl4L29bhHxe4io6l7EOfhiaaE5qIGkR:Y2mJ3RKjFVwl4+nqId

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.fosna.net
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    (=8fPSH$KO_!

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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 3 TTPs

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

  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\scan_file34975UU.scr.exe
    "C:\Users\Admin\AppData\Local\Temp\scan_file34975UU.scr.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2676
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\scan_file34975UU.scr.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2632
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\JhrcdGxufUIh.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2628
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JhrcdGxufUIh" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC11D.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1300
    • C:\Users\Admin\AppData\Local\Temp\scan_file34975UU.scr.exe
      "C:\Users\Admin\AppData\Local\Temp\scan_file34975UU.scr.exe"
      2⤵
        PID:1928
      • C:\Users\Admin\AppData\Local\Temp\scan_file34975UU.scr.exe
        "C:\Users\Admin\AppData\Local\Temp\scan_file34975UU.scr.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1976

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpC11D.tmp

      Filesize

      1KB

      MD5

      2d8cc84a097ab2fec19fb95a0a900080

      SHA1

      9c77f2d87ab9c9e126cc4ede39fd56e99390f605

      SHA256

      9cdd5f3c8d1d5af552c27cb7d07f4779e1c03e857c31e60d8294c068e8727bea

      SHA512

      cf288bd97ca7faef56bfd20e09a877c78f540961703ab729078280700d1786fffa924acc5076108e0bf68b06d4afae95386253ebc8b65eba090c00245074b901

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\EQ2DVKEEY9RGWG1WO6ZB.temp

      Filesize

      7KB

      MD5

      b1a5cf115b4949301995a69e717148f8

      SHA1

      3bec6363909fff491995dd2fe9f0ab02f8c83395

      SHA256

      493ebf716acab807a04e025d315763a08938f69b4dd04339e6a284d04b0f131d

      SHA512

      b46910da4a7298f0a630c8764a04451a78974b843386016522ef9822332e6abc954eb3c8cbf8ffd4621c0554f1a5492e301710432b25cfc860a12a500aa80fff

    • memory/1976-30-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1976-28-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1976-25-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1976-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1976-29-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1976-23-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1976-21-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1976-19-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2676-6-0x0000000000C70000-0x0000000000CF4000-memory.dmp

      Filesize

      528KB

    • memory/2676-1-0x0000000001090000-0x000000000114C000-memory.dmp

      Filesize

      752KB

    • memory/2676-0-0x00000000742BE000-0x00000000742BF000-memory.dmp

      Filesize

      4KB

    • memory/2676-2-0x00000000742B0000-0x000000007499E000-memory.dmp

      Filesize

      6.9MB

    • memory/2676-3-0x0000000000490000-0x00000000004AE000-memory.dmp

      Filesize

      120KB

    • memory/2676-5-0x00000000742B0000-0x000000007499E000-memory.dmp

      Filesize

      6.9MB

    • memory/2676-4-0x00000000742BE000-0x00000000742BF000-memory.dmp

      Filesize

      4KB

    • memory/2676-31-0x00000000742B0000-0x000000007499E000-memory.dmp

      Filesize

      6.9MB