Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2023 01:02

General

  • Target

    Balance invoice.exe

  • Size

    665KB

  • MD5

    96f35afff27509e6f78a8add621120a7

  • SHA1

    1b095ff5a3ca286029c72dca0bdca94eeffac305

  • SHA256

    ba5b23fdbec77442d3d5e9e87ea46dba8ce7df395fa5668edabe9be96eebae10

  • SHA512

    c27e90ce2e782f7a8dc3923e324aa654d9cd68554214438b9680003f98d1b0f9288cb7b2c601ccc084a82aa1db0e30ab89e485361c84e1b5521d13c9911fb6b2

  • SSDEEP

    12288:Aqc3+GCueH5qNvmL3z8pucAmKE4uqSAs1xVHel9C+0RU2IWUkRmLhR:A/uG2qc36uuKEBPNHelY+0pzNmz

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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
  • 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Balance invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\Balance invoice.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2892
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\AiCuUAmhRTLtO.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2872
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AiCuUAmhRTLtO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC1E8.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2344
    • C:\Users\Admin\AppData\Local\Temp\Balance invoice.exe
      "C:\Users\Admin\AppData\Local\Temp\Balance invoice.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4256

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0krnjyiv.awy.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpC1E8.tmp

    Filesize

    1KB

    MD5

    fa846a9a4700bc3ddcdc7d45c6ec5f13

    SHA1

    22bf90dc2230c4e2f08d759a9a9b94894fe790b7

    SHA256

    851b623200a8967e632f9bb094fa87ebc456c9ee7ef48d0d84d91236c74c1d36

    SHA512

    6fb2b9d676b89aaba50978f41b33eb69eafc81808e051442b1f265da60323b0cc5edbd218b3e86e930ba1d456a93e0d9672a341e8a12b7d060aed57e972c009a

  • memory/2872-58-0x00000000074C0000-0x0000000007B3A000-memory.dmp

    Filesize

    6.5MB

  • memory/2872-21-0x0000000002310000-0x0000000002320000-memory.dmp

    Filesize

    64KB

  • memory/2872-71-0x0000000075300000-0x0000000075AB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2872-67-0x00000000071A0000-0x00000000071A8000-memory.dmp

    Filesize

    32KB

  • memory/2872-40-0x00000000056C0000-0x0000000005A14000-memory.dmp

    Filesize

    3.3MB

  • memory/2872-65-0x00000000071C0000-0x00000000071DA000-memory.dmp

    Filesize

    104KB

  • memory/2872-64-0x00000000070C0000-0x00000000070D4000-memory.dmp

    Filesize

    80KB

  • memory/2872-63-0x00000000070B0000-0x00000000070BE000-memory.dmp

    Filesize

    56KB

  • memory/2872-15-0x0000000002230000-0x0000000002266000-memory.dmp

    Filesize

    216KB

  • memory/2872-16-0x0000000075300000-0x0000000075AB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2872-62-0x0000000007080000-0x0000000007091000-memory.dmp

    Filesize

    68KB

  • memory/2872-19-0x0000000004EB0000-0x00000000054D8000-memory.dmp

    Filesize

    6.2MB

  • memory/2872-61-0x0000000007100000-0x0000000007196000-memory.dmp

    Filesize

    600KB

  • memory/2872-42-0x0000000005BC0000-0x0000000005C0C000-memory.dmp

    Filesize

    304KB

  • memory/2872-60-0x0000000006EF0000-0x0000000006EFA000-memory.dmp

    Filesize

    40KB

  • memory/2872-59-0x0000000006E80000-0x0000000006E9A000-memory.dmp

    Filesize

    104KB

  • memory/2872-20-0x0000000002310000-0x0000000002320000-memory.dmp

    Filesize

    64KB

  • memory/2872-57-0x0000000006190000-0x0000000006233000-memory.dmp

    Filesize

    652KB

  • memory/2872-26-0x0000000004C90000-0x0000000004CB2000-memory.dmp

    Filesize

    136KB

  • memory/2872-45-0x0000000006140000-0x0000000006172000-memory.dmp

    Filesize

    200KB

  • memory/2872-28-0x0000000004E30000-0x0000000004E96000-memory.dmp

    Filesize

    408KB

  • memory/2872-46-0x0000000071690000-0x00000000716DC000-memory.dmp

    Filesize

    304KB

  • memory/2872-56-0x0000000006110000-0x000000000612E000-memory.dmp

    Filesize

    120KB

  • memory/2872-44-0x000000007EE50000-0x000000007EE60000-memory.dmp

    Filesize

    64KB

  • memory/2872-43-0x0000000002310000-0x0000000002320000-memory.dmp

    Filesize

    64KB

  • memory/2872-41-0x0000000005B60000-0x0000000005B7E000-memory.dmp

    Filesize

    120KB

  • memory/2892-18-0x0000000075300000-0x0000000075AB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2892-9-0x00000000064E0000-0x000000000654A000-memory.dmp

    Filesize

    424KB

  • memory/2892-5-0x00000000050A0000-0x00000000050AA000-memory.dmp

    Filesize

    40KB

  • memory/2892-6-0x00000000060E0000-0x00000000060FA000-memory.dmp

    Filesize

    104KB

  • memory/2892-7-0x0000000006100000-0x0000000006108000-memory.dmp

    Filesize

    32KB

  • memory/2892-25-0x0000000075300000-0x0000000075AB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2892-0-0x0000000000460000-0x000000000050C000-memory.dmp

    Filesize

    688KB

  • memory/2892-1-0x0000000075300000-0x0000000075AB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2892-2-0x00000000053C0000-0x0000000005964000-memory.dmp

    Filesize

    5.6MB

  • memory/2892-8-0x0000000006110000-0x000000000611A000-memory.dmp

    Filesize

    40KB

  • memory/2892-4-0x0000000005120000-0x0000000005130000-memory.dmp

    Filesize

    64KB

  • memory/2892-3-0x0000000004EF0000-0x0000000004F82000-memory.dmp

    Filesize

    584KB

  • memory/2892-10-0x0000000008B00000-0x0000000008B9C000-memory.dmp

    Filesize

    624KB

  • memory/4256-27-0x0000000075300000-0x0000000075AB0000-memory.dmp

    Filesize

    7.7MB

  • memory/4256-22-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/4256-36-0x0000000005520000-0x0000000005586000-memory.dmp

    Filesize

    408KB

  • memory/4256-68-0x0000000006EB0000-0x0000000007072000-memory.dmp

    Filesize

    1.8MB

  • memory/4256-72-0x0000000075300000-0x0000000075AB0000-memory.dmp

    Filesize

    7.7MB

  • memory/4256-66-0x0000000006C90000-0x0000000006CE0000-memory.dmp

    Filesize

    320KB

  • memory/4256-34-0x0000000005630000-0x0000000005640000-memory.dmp

    Filesize

    64KB

  • memory/4256-73-0x0000000005630000-0x0000000005640000-memory.dmp

    Filesize

    64KB