Analysis

  • max time kernel
    87s
  • max time network
    76s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    20/12/2022, 15:54

General

  • Target

    PLT20941.EXE.exe

  • Size

    856KB

  • MD5

    23f3d648155345927d423e5928556386

  • SHA1

    2da92044feb908ab873dcbaa64fa659e89214678

  • SHA256

    26f0b09b268b03208b04f2744735ca23fa683238c944a065216fccdab0b5816a

  • SHA512

    1ca2c7a60a43643723b3ae0062d2b92c93a85f91f00d9fefde45cf325a2eabd3f3f38f36b84fdd5d9da445865346efd85fed7d4bef1681624bbe5a6a2f290dc8

  • SSDEEP

    12288:k+bdz707a1k+H1csok/sZa4Rb6Wox2cHss/S+PNc42xtAq:fbB7z15HuVRb0x2cHs6Sqm42nAq

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5923109311:AAGkEmGrMsQyQ8A-GmsvDBttRvvSV6NYxs4/

Signatures

  • AgentTesla

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • 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 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). 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: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PLT20941.EXE.exe
    "C:\Users\Admin\AppData\Local\Temp\PLT20941.EXE.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1328
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tlRxJDbsLEqHXt.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:892
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tlRxJDbsLEqHXt" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB0CA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1600
    • C:\Users\Admin\AppData\Local\Temp\PLT20941.EXE.exe
      "C:\Users\Admin\AppData\Local\Temp\PLT20941.EXE.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Users\Admin\AppData\Local\Temp\FB_B404.tmp.exe
        "C:\Users\Admin\AppData\Local\Temp\FB_B404.tmp.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of AdjustPrivilegeToken
        PID:288
      • C:\Users\Admin\AppData\Local\Temp\FB_B463.tmp.exe
        "C:\Users\Admin\AppData\Local\Temp\FB_B463.tmp.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1072

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\FB_B404.tmp.exe

    Filesize

    117KB

    MD5

    cc2d2f707f935aebb4931f1fe7616624

    SHA1

    f9c0d76e1b3508f42609e2abf78012e9fa475ae5

    SHA256

    ee5c5ab5b14e02cff11eb3a0ffa0b41a135428d526936285d0528c4f5c43530f

    SHA512

    d601d0f5331f2e684d5eb1dc8f177af9e6243fc5b9376cdea4fd66c061a68de994f00942accab596bf36547a3676de83d112481f001d3dd5e6d812537813561a

  • C:\Users\Admin\AppData\Local\Temp\FB_B404.tmp.exe

    Filesize

    117KB

    MD5

    cc2d2f707f935aebb4931f1fe7616624

    SHA1

    f9c0d76e1b3508f42609e2abf78012e9fa475ae5

    SHA256

    ee5c5ab5b14e02cff11eb3a0ffa0b41a135428d526936285d0528c4f5c43530f

    SHA512

    d601d0f5331f2e684d5eb1dc8f177af9e6243fc5b9376cdea4fd66c061a68de994f00942accab596bf36547a3676de83d112481f001d3dd5e6d812537813561a

  • C:\Users\Admin\AppData\Local\Temp\FB_B463.tmp.exe

    Filesize

    160KB

    MD5

    31d63c5e1804af4bba747db7a016d594

    SHA1

    4957b93ab03a3cb91603c8c5d6c71bb376ab73ee

    SHA256

    a40808804f8981f94918b2f7d7decb079dc160acce8db5f5d31cd80445757d23

    SHA512

    2a8115fbadcae77eb7a06024f16f85ddd796acd9b6647688c2d537e65cf6a978491679aca6da5e8a41509662cf99d0c7ad77632f6799ccb9c7e4002088d796b0

  • C:\Users\Admin\AppData\Local\Temp\FB_B463.tmp.exe

    Filesize

    160KB

    MD5

    31d63c5e1804af4bba747db7a016d594

    SHA1

    4957b93ab03a3cb91603c8c5d6c71bb376ab73ee

    SHA256

    a40808804f8981f94918b2f7d7decb079dc160acce8db5f5d31cd80445757d23

    SHA512

    2a8115fbadcae77eb7a06024f16f85ddd796acd9b6647688c2d537e65cf6a978491679aca6da5e8a41509662cf99d0c7ad77632f6799ccb9c7e4002088d796b0

  • C:\Users\Admin\AppData\Local\Temp\tmpB0CA.tmp

    Filesize

    1KB

    MD5

    c193ee4e0b715437d343e11fa7cc62d7

    SHA1

    dbf8a7a13120882575643a017d767ac2d01b2d60

    SHA256

    73b0abcbb0ae7dbfaf6b66c5a2f593fdcad0688d599e3e57e69bd772c150df98

    SHA512

    a189ccb5616c7214b9db5a36c99c9285e4cb530b324d95d24f3ef25c5aad9426d20a5b97be7609a9f3bcd4432be676bb81ca1280b5ed2fcf4d04dd27d387b42f

  • \Users\Admin\AppData\Local\Temp\FB_B404.tmp.exe

    Filesize

    117KB

    MD5

    cc2d2f707f935aebb4931f1fe7616624

    SHA1

    f9c0d76e1b3508f42609e2abf78012e9fa475ae5

    SHA256

    ee5c5ab5b14e02cff11eb3a0ffa0b41a135428d526936285d0528c4f5c43530f

    SHA512

    d601d0f5331f2e684d5eb1dc8f177af9e6243fc5b9376cdea4fd66c061a68de994f00942accab596bf36547a3676de83d112481f001d3dd5e6d812537813561a

  • \Users\Admin\AppData\Local\Temp\FB_B463.tmp.exe

    Filesize

    160KB

    MD5

    31d63c5e1804af4bba747db7a016d594

    SHA1

    4957b93ab03a3cb91603c8c5d6c71bb376ab73ee

    SHA256

    a40808804f8981f94918b2f7d7decb079dc160acce8db5f5d31cd80445757d23

    SHA512

    2a8115fbadcae77eb7a06024f16f85ddd796acd9b6647688c2d537e65cf6a978491679aca6da5e8a41509662cf99d0c7ad77632f6799ccb9c7e4002088d796b0

  • memory/288-90-0x00000000004F0000-0x00000000004F8000-memory.dmp

    Filesize

    32KB

  • memory/288-89-0x0000000000550000-0x0000000000586000-memory.dmp

    Filesize

    216KB

  • memory/288-80-0x0000000000E00000-0x0000000000E22000-memory.dmp

    Filesize

    136KB

  • memory/892-87-0x000000006EA90000-0x000000006F03B000-memory.dmp

    Filesize

    5.7MB

  • memory/892-88-0x000000006EA90000-0x000000006F03B000-memory.dmp

    Filesize

    5.7MB

  • memory/1072-85-0x00000000013C0000-0x00000000013EE000-memory.dmp

    Filesize

    184KB

  • memory/1328-63-0x0000000004950000-0x00000000049A0000-memory.dmp

    Filesize

    320KB

  • memory/1328-54-0x00000000010C0000-0x000000000119C000-memory.dmp

    Filesize

    880KB

  • memory/1328-55-0x0000000075351000-0x0000000075353000-memory.dmp

    Filesize

    8KB

  • memory/1328-56-0x00000000003D0000-0x00000000003E6000-memory.dmp

    Filesize

    88KB

  • memory/1328-57-0x00000000003E0000-0x00000000003EA000-memory.dmp

    Filesize

    40KB

  • memory/1328-58-0x0000000005DF0000-0x0000000005E76000-memory.dmp

    Filesize

    536KB

  • memory/1624-68-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/1624-64-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/1624-82-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/1624-65-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/1624-66-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/1624-67-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/1624-74-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/1624-70-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB