Analysis

  • max time kernel
    119s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    21/10/2023, 11:41

General

  • Target

    IHFa.exe

  • Size

    691KB

  • MD5

    a5e2855d36d6ce0be8ca37e320b9fc5b

  • SHA1

    f245322d30a9940e8cd90eb6c9a62970a0163223

  • SHA256

    ec3c5f87dd51127d36272f399759f9e7493a81e37844827b4b1a99685f8340e7

  • SHA512

    498f4291d78e0209dc19fde3ba7516ca958c9ef16da96be4c740f3ff7e88dde6835dfaffcd8e4c287f739b98295748cf23103d67633dcb7360c427ae37b8fb0d

  • SSDEEP

    12288:l5b5yzvbYmBH/NBNfkhOp84xsyVjurAgNexeSlZyMg1WgoJUdaJX5dznbeEP:JebY0fNBNfkQp8rSiU4OgoJUM4

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\IHFa.exe
    "C:\Users\Admin\AppData\Local\Temp\IHFa.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\BkvkLQU.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2976
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BkvkLQU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp361E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3044
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2784

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmp361E.tmp

          Filesize

          1KB

          MD5

          13da903a1afdefba35c6d3ada4f00b82

          SHA1

          32c2f8146bb6bd24665d694524e4b0752a3870b5

          SHA256

          9f498ef1340f019dae3dff1037917fdf71b964e67668fd73e7f8abe970034369

          SHA512

          75c612d28f7bc9ce97b1431a2fd3e060f8b9e2e8a91b7eca844fec0834140daf7c1296614ba5c3c7bf3631c9afd3d4120ef9c1216b16ad6544fb531ec9f36f84

        • memory/2272-0-0x0000000000C80000-0x0000000000D32000-memory.dmp

          Filesize

          712KB

        • memory/2272-1-0x0000000074050000-0x000000007473E000-memory.dmp

          Filesize

          6.9MB

        • memory/2272-2-0x00000000048C0000-0x0000000004900000-memory.dmp

          Filesize

          256KB

        • memory/2272-3-0x0000000000410000-0x000000000042C000-memory.dmp

          Filesize

          112KB

        • memory/2272-4-0x0000000000300000-0x000000000030C000-memory.dmp

          Filesize

          48KB

        • memory/2272-5-0x0000000074050000-0x000000007473E000-memory.dmp

          Filesize

          6.9MB

        • memory/2272-6-0x00000000048C0000-0x0000000004900000-memory.dmp

          Filesize

          256KB

        • memory/2272-7-0x00000000003F0000-0x0000000000400000-memory.dmp

          Filesize

          64KB

        • memory/2272-8-0x0000000005210000-0x000000000528A000-memory.dmp

          Filesize

          488KB

        • memory/2272-29-0x0000000074050000-0x000000007473E000-memory.dmp

          Filesize

          6.9MB

        • memory/2784-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2784-35-0x0000000004880000-0x00000000048C0000-memory.dmp

          Filesize

          256KB

        • memory/2784-21-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2784-18-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2784-25-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2784-27-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2784-16-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2784-30-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2784-40-0x0000000004880000-0x00000000048C0000-memory.dmp

          Filesize

          256KB

        • memory/2784-20-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2784-33-0x0000000072D50000-0x000000007343E000-memory.dmp

          Filesize

          6.9MB

        • memory/2784-39-0x0000000072D50000-0x000000007343E000-memory.dmp

          Filesize

          6.9MB

        • memory/2976-32-0x0000000002540000-0x0000000002580000-memory.dmp

          Filesize

          256KB

        • memory/2976-36-0x0000000002540000-0x0000000002580000-memory.dmp

          Filesize

          256KB

        • memory/2976-37-0x000000006E480000-0x000000006EA2B000-memory.dmp

          Filesize

          5.7MB

        • memory/2976-34-0x000000006E480000-0x000000006EA2B000-memory.dmp

          Filesize

          5.7MB

        • memory/2976-31-0x000000006E480000-0x000000006EA2B000-memory.dmp

          Filesize

          5.7MB