Analysis

  • max time kernel
    99s
  • max time network
    121s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/04/2023, 16:50

General

  • Target

    f26ce3fc95a5cc436d4e15338a7ded6b.exe

  • Size

    612KB

  • MD5

    f26ce3fc95a5cc436d4e15338a7ded6b

  • SHA1

    5c246a98d7880d7136618db76e48fe5b8b85c760

  • SHA256

    b6d0953157868a8702d0503d4e5303d208b6b8653d09bd76ec03b7c6c8f2f273

  • SHA512

    3ec7fefbb2bea8079cfea9239e8f38c8d0c492cff3f1de1860c287a87a21f8fed883243e7f1201e884694702a69dab1de703c2ab64333ea03b3fb9bf89b51bde

  • SSDEEP

    12288:g3qUZCG5G0MQBmQLwgqj6jaiBdE8dsJHJPguR8H0W:7YCECTjj6NAgsJpPgrUW

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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f26ce3fc95a5cc436d4e15338a7ded6b.exe
    "C:\Users\Admin\AppData\Local\Temp\f26ce3fc95a5cc436d4e15338a7ded6b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1152
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UImAzFkCIGy.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4756
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UImAzFkCIGy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3E61.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3512
    • C:\Users\Admin\AppData\Local\Temp\f26ce3fc95a5cc436d4e15338a7ded6b.exe
      "C:\Users\Admin\AppData\Local\Temp\f26ce3fc95a5cc436d4e15338a7ded6b.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2708

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\f26ce3fc95a5cc436d4e15338a7ded6b.exe.log

    Filesize

    1KB

    MD5

    33d62ef2c354f839a8b2b987e6ee41e7

    SHA1

    d76f64ac411a61f3f232f7f9f7b179bd34042226

    SHA256

    f6a84062cb11ccf802324692c2c4c48543377cf717d98efd5de695ed6d0a97d9

    SHA512

    d68a426b2f4646bb45e2267d60680166a8effb9a461e5a07756ba13a3bdf36b27e6e9777d945d03a62362e6976e92214c53ffc7c4f03ec28d3fcfc9a442c5e3c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dow1kb4s.jub.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp3E61.tmp

    Filesize

    1KB

    MD5

    a4065694e7521599168f846671845955

    SHA1

    de86f0674d2ec3e6dcc6e2e929ef8eb4f0e27887

    SHA256

    6dace91a607ea6536ee0de285e8e1310d1f2cbf2e66cd55d5e7f025bd2767eba

    SHA512

    1d6f4b884f2913a4322b0644de35bfccbe023cc45f1667d866fcc48a474eb5da100b8b2b70f0b96044158f427349f2932ffddaf1f6bc0b3ee56e62ea873d0bf4

  • memory/1152-134-0x00000000053B0000-0x0000000005954000-memory.dmp

    Filesize

    5.6MB

  • memory/1152-135-0x0000000004EA0000-0x0000000004F32000-memory.dmp

    Filesize

    584KB

  • memory/1152-136-0x0000000004E70000-0x0000000004E7A000-memory.dmp

    Filesize

    40KB

  • memory/1152-137-0x0000000004E40000-0x0000000004E50000-memory.dmp

    Filesize

    64KB

  • memory/1152-138-0x0000000004E40000-0x0000000004E50000-memory.dmp

    Filesize

    64KB

  • memory/1152-139-0x0000000008370000-0x000000000840C000-memory.dmp

    Filesize

    624KB

  • memory/1152-133-0x0000000000540000-0x00000000005E0000-memory.dmp

    Filesize

    640KB

  • memory/2708-162-0x0000000002950000-0x0000000002960000-memory.dmp

    Filesize

    64KB

  • memory/2708-147-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2708-192-0x0000000002950000-0x0000000002960000-memory.dmp

    Filesize

    64KB

  • memory/2708-185-0x0000000006610000-0x00000000067D2000-memory.dmp

    Filesize

    1.8MB

  • memory/2708-184-0x00000000063C0000-0x0000000006410000-memory.dmp

    Filesize

    320KB

  • memory/4756-164-0x00000000022C0000-0x00000000022D0000-memory.dmp

    Filesize

    64KB

  • memory/4756-179-0x0000000007420000-0x0000000007A9A000-memory.dmp

    Filesize

    6.5MB

  • memory/4756-157-0x0000000005480000-0x00000000054E6000-memory.dmp

    Filesize

    408KB

  • memory/4756-163-0x0000000005A70000-0x0000000005A8E000-memory.dmp

    Filesize

    120KB

  • memory/4756-165-0x00000000022C0000-0x00000000022D0000-memory.dmp

    Filesize

    64KB

  • memory/4756-167-0x0000000006050000-0x0000000006082000-memory.dmp

    Filesize

    200KB

  • memory/4756-168-0x0000000070D60000-0x0000000070DAC000-memory.dmp

    Filesize

    304KB

  • memory/4756-178-0x0000000006030000-0x000000000604E000-memory.dmp

    Filesize

    120KB

  • memory/4756-180-0x00000000022C0000-0x00000000022D0000-memory.dmp

    Filesize

    64KB

  • memory/4756-144-0x0000000000AD0000-0x0000000000B06000-memory.dmp

    Filesize

    216KB

  • memory/4756-182-0x0000000006D70000-0x0000000006D8A000-memory.dmp

    Filesize

    104KB

  • memory/4756-181-0x000000007F4B0000-0x000000007F4C0000-memory.dmp

    Filesize

    64KB

  • memory/4756-183-0x0000000006DF0000-0x0000000006DFA000-memory.dmp

    Filesize

    40KB

  • memory/4756-151-0x00000000053A0000-0x0000000005406000-memory.dmp

    Filesize

    408KB

  • memory/4756-146-0x0000000004D00000-0x0000000005328000-memory.dmp

    Filesize

    6.2MB

  • memory/4756-186-0x0000000007000000-0x0000000007096000-memory.dmp

    Filesize

    600KB

  • memory/4756-187-0x0000000006FB0000-0x0000000006FBE000-memory.dmp

    Filesize

    56KB

  • memory/4756-188-0x00000000070C0000-0x00000000070DA000-memory.dmp

    Filesize

    104KB

  • memory/4756-189-0x00000000070A0000-0x00000000070A8000-memory.dmp

    Filesize

    32KB

  • memory/4756-150-0x0000000004AC0000-0x0000000004AE2000-memory.dmp

    Filesize

    136KB