Analysis

  • max time kernel
    143s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/08/2023, 15:43

General

  • Target

    revised_invoice.exe

  • Size

    828KB

  • MD5

    aba5cc62cc5479e1f5f5c733d750520a

  • SHA1

    02670702f7c840e382edabab7933b5079112b2fe

  • SHA256

    f6bdba555d1356168f7f1581949ab5ca8d6b20e9a6495e0cfcef8d3b129638a0

  • SHA512

    2e17f86ff811d65d42a16424f439fb6cf236bd5785eb282830242755a081ef9bdefec051aeb5e853d2e326c36cccb0f97178269b562a736b17f10436280edcb5

  • SSDEEP

    12288:QEKaJFds+DAOBwjoe1qtWiRW95ZZUiGTrj4z1/c7:5dYjoeYWJdZvd/O

Malware Config

Extracted

Family

snakekeylogger

Credentials

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 2 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.

  • 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).

  • 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 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\revised_invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\revised_invoice.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\VCYZNOqT.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2140
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VCYZNOqT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9EE.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2808
    • C:\Users\Admin\AppData\Local\Temp\revised_invoice.exe
      "C:\Users\Admin\AppData\Local\Temp\revised_invoice.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4428

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\revised_invoice.exe.log

          Filesize

          1KB

          MD5

          8ec831f3e3a3f77e4a7b9cd32b48384c

          SHA1

          d83f09fd87c5bd86e045873c231c14836e76a05c

          SHA256

          7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

          SHA512

          26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_swmjikkp.3r1.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmp9EE.tmp

          Filesize

          1KB

          MD5

          3926b5405542bcbb989f14889a355546

          SHA1

          2ff13fa0386f83398140d04f4d1652a2ad7e73cf

          SHA256

          808197375c48812974adb4c788aebebee9555e2f9e36604c4c7018d868c51692

          SHA512

          a0cec773d47d35b704db19bc234686a45d6ed849c67d08d605898dd70e1e77959430ff5410455035c74d12f3a3ba3d0d196cd60a676d3e48e8b6c665b078520c

        • memory/1576-139-0x00000000050C0000-0x000000000515C000-memory.dmp

          Filesize

          624KB

        • memory/1576-137-0x0000000004FC0000-0x0000000004FD0000-memory.dmp

          Filesize

          64KB

        • memory/1576-138-0x0000000004E30000-0x0000000004E3A000-memory.dmp

          Filesize

          40KB

        • memory/1576-136-0x0000000004E40000-0x0000000004ED2000-memory.dmp

          Filesize

          584KB

        • memory/1576-140-0x0000000074550000-0x0000000074D00000-memory.dmp

          Filesize

          7.7MB

        • memory/1576-141-0x0000000004FC0000-0x0000000004FD0000-memory.dmp

          Filesize

          64KB

        • memory/1576-133-0x0000000000340000-0x0000000000416000-memory.dmp

          Filesize

          856KB

        • memory/1576-135-0x0000000005310000-0x00000000058B4000-memory.dmp

          Filesize

          5.6MB

        • memory/1576-134-0x0000000074550000-0x0000000074D00000-memory.dmp

          Filesize

          7.7MB

        • memory/1576-156-0x0000000074550000-0x0000000074D00000-memory.dmp

          Filesize

          7.7MB

        • memory/2140-169-0x0000000005D70000-0x0000000005DD6000-memory.dmp

          Filesize

          408KB

        • memory/2140-174-0x000000006FF80000-0x000000006FFCC000-memory.dmp

          Filesize

          304KB

        • memory/2140-152-0x0000000005310000-0x0000000005938000-memory.dmp

          Filesize

          6.2MB

        • memory/2140-149-0x0000000002940000-0x0000000002950000-memory.dmp

          Filesize

          64KB

        • memory/2140-199-0x0000000074550000-0x0000000074D00000-memory.dmp

          Filesize

          7.7MB

        • memory/2140-150-0x0000000002940000-0x0000000002950000-memory.dmp

          Filesize

          64KB

        • memory/2140-195-0x00000000078B0000-0x00000000078B8000-memory.dmp

          Filesize

          32KB

        • memory/2140-158-0x0000000005AC0000-0x0000000005AE2000-memory.dmp

          Filesize

          136KB

        • memory/2140-148-0x0000000074550000-0x0000000074D00000-memory.dmp

          Filesize

          7.7MB

        • memory/2140-146-0x0000000004CA0000-0x0000000004CD6000-memory.dmp

          Filesize

          216KB

        • memory/2140-164-0x0000000005B90000-0x0000000005BF6000-memory.dmp

          Filesize

          408KB

        • memory/2140-170-0x0000000004FE0000-0x0000000004FFE000-memory.dmp

          Filesize

          120KB

        • memory/2140-171-0x0000000002940000-0x0000000002950000-memory.dmp

          Filesize

          64KB

        • memory/2140-172-0x000000007F1E0000-0x000000007F1F0000-memory.dmp

          Filesize

          64KB

        • memory/2140-173-0x0000000006840000-0x0000000006872000-memory.dmp

          Filesize

          200KB

        • memory/2140-194-0x00000000078C0000-0x00000000078DA000-memory.dmp

          Filesize

          104KB

        • memory/2140-184-0x0000000006820000-0x000000000683E000-memory.dmp

          Filesize

          120KB

        • memory/2140-185-0x0000000007C10000-0x000000000828A000-memory.dmp

          Filesize

          6.5MB

        • memory/2140-186-0x0000000006910000-0x000000000692A000-memory.dmp

          Filesize

          104KB

        • memory/2140-187-0x0000000074550000-0x0000000074D00000-memory.dmp

          Filesize

          7.7MB

        • memory/2140-188-0x00000000075F0000-0x00000000075FA000-memory.dmp

          Filesize

          40KB

        • memory/2140-189-0x00000000077F0000-0x0000000007886000-memory.dmp

          Filesize

          600KB

        • memory/2140-193-0x00000000077C0000-0x00000000077CE000-memory.dmp

          Filesize

          56KB

        • memory/2140-191-0x0000000002940000-0x0000000002950000-memory.dmp

          Filesize

          64KB

        • memory/2140-192-0x0000000002940000-0x0000000002950000-memory.dmp

          Filesize

          64KB

        • memory/4428-190-0x00000000066F0000-0x00000000068B2000-memory.dmp

          Filesize

          1.8MB

        • memory/4428-151-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/4428-157-0x00000000054F0000-0x0000000005500000-memory.dmp

          Filesize

          64KB

        • memory/4428-196-0x0000000074550000-0x0000000074D00000-memory.dmp

          Filesize

          7.7MB

        • memory/4428-155-0x0000000074550000-0x0000000074D00000-memory.dmp

          Filesize

          7.7MB

        • memory/4428-200-0x00000000054F0000-0x0000000005500000-memory.dmp

          Filesize

          64KB