Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-01-2025 08:25

General

  • Target

    coinbase.exe

  • Size

    1.1MB

  • MD5

    d658dadccb4a21c0b50d0dc0406f9c3f

  • SHA1

    eb50304a3fcc3664f7f7f598830eb379f347b793

  • SHA256

    f725bf614120e26b774341f54d73210aea60205c2723e155cb6fd09fa4411b56

  • SHA512

    73b4fae7dc1a8363a6a2eea1610d2a6655367dbac393e7e00acf6277773d561f76d4bc47824de3e588d5ec91566b35f0233d3f143f80bcf7dd9b57c2a54c86bd

  • SSDEEP

    24576:QMjh7ExHIySDQwfx7FbD/KhlcBQgbLY1Yl05bmktUNudtJjdPrF:jmHZSDQyJP/+jgbLuYlab7SNudXjdTF

Malware Config

Extracted

Family

asyncrat

Version

Esco Private rat

Botnet

Default

C2

93.123.109.39:4449

Mutex

ozvhxbdcbanqw

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • Async RAT payload 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 8 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

    Run Powershell to execute payload.

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\coinbase.exe
    "C:\Users\Admin\AppData\Local\Temp\coinbase.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4996
    • C:\Users\Admin\AppData\Local\Temp\is-5LKTD.tmp\coinbase.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-5LKTD.tmp\coinbase.tmp" /SL5="$A015A,770488,161792,C:\Users\Admin\AppData\Local\Temp\coinbase.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2008
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C timeout /T 3 & "C:\Users\Admin\AppData\Local\Temp\coinbase.exe" /VERYSILENT /SUPPRESSMSGBOXES
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4088
        • C:\Windows\SysWOW64\timeout.exe
          timeout /T 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:184
        • C:\Users\Admin\AppData\Local\Temp\coinbase.exe
          "C:\Users\Admin\AppData\Local\Temp\coinbase.exe" /VERYSILENT /SUPPRESSMSGBOXES
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2112
          • C:\Users\Admin\AppData\Local\Temp\is-1OCL5.tmp\coinbase.tmp
            "C:\Users\Admin\AppData\Local\Temp\is-1OCL5.tmp\coinbase.tmp" /SL5="$701C4,770488,161792,C:\Users\Admin\AppData\Local\Temp\coinbase.exe" /VERYSILENT /SUPPRESSMSGBOXES
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of WriteProcessMemory
            PID:3932
            • C:\Windows\SysWOW64\regsvr32.exe
              "regsvr32.exe" /s /i:SYNC "C:\Users\Admin\AppData\Roaming\\2crypt32.drv"
              6⤵
              • Loads dropped DLL
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:4936
              • C:\Windows\system32\regsvr32.exe
                /s /i:SYNC "C:\Users\Admin\AppData\Roaming\\2crypt32.drv"
                7⤵
                • Loads dropped DLL
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of SetWindowsHookEx
                • Suspicious use of WriteProcessMemory
                PID:4876
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  "powershell" -Command "if (Get-ScheduledTask | Where-Object { $_.Actions.Execute -eq 'regsvr32' -and $_.Actions.Arguments -eq '/S /i:SYNC C:\Users\Admin\AppData\Roaming\2crypt32.drv' }) { exit 0 } else { exit 1 }"
                  8⤵
                  • Command and Scripting Interpreter: PowerShell
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3780
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  "powershell" "Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute \"regsvr32\" -Argument \"/S /i:SYNC C:\Users\Admin\AppData\Roaming\2crypt32.drv\") -Trigger (New-ScheduledTaskTrigger -Once -At (Get-Date).AddMinutes(1) -RepetitionInterval (New-TimeSpan -Minutes 1)) -TaskName 'MicrosoftEdgeUpdateTaskMachineUA{7376C453-3205-403F-BF5D-BF4134F92E10}' -Description 'Default' -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -ExecutionTimeLimit 0) -RunLevel Highest"
                  8⤵
                  • Command and Scripting Interpreter: PowerShell
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4888
  • C:\Windows\system32\regsvr32.EXE
    C:\Windows\system32\regsvr32.EXE /S /i:SYNC C:\Users\Admin\AppData\Roaming\2crypt32.drv
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:940
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command "if (Get-ScheduledTask | Where-Object { $_.Actions.Execute -eq 'regsvr32' -and $_.Actions.Arguments -eq '/S /i:SYNC C:\Users\Admin\AppData\Roaming\2crypt32.drv' }) { exit 0 } else { exit 1 }"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      PID:2940
  • C:\Windows\system32\regsvr32.EXE
    C:\Windows\system32\regsvr32.EXE /S /i:SYNC C:\Users\Admin\AppData\Roaming\2crypt32.drv
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command "if (Get-ScheduledTask | Where-Object { $_.Actions.Execute -eq 'regsvr32' -and $_.Actions.Arguments -eq '/S /i:SYNC C:\Users\Admin\AppData\Roaming\2crypt32.drv' }) { exit 0 } else { exit 1 }"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      PID:2348

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    3KB

    MD5

    661739d384d9dfd807a089721202900b

    SHA1

    5b2c5d6a7122b4ce849dc98e79a7713038feac55

    SHA256

    70c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf

    SHA512

    81b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    1KB

    MD5

    12c844ed8342738dacc6eb0072c43257

    SHA1

    b7f2f9e3ec4aaf5e2996720f129cd64887ac91d7

    SHA256

    2afeb7db4e46d3c1524512a73448e9cd0121deec761d8aa54fa9fe8b56df7519

    SHA512

    e3de9103533a69cccc36cd377297ba3ec9bd7a1159e1349d2cc01ab66a88a5a82b4ee3af61fab586a0cdfab915c7408735439fd0462c5c2cc2c787cb0765766a

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    1KB

    MD5

    f1a124d16ab08ea854f480d72a0deec6

    SHA1

    244f12ae9e32de5d2c8d1eb36ec88ac226b0025f

    SHA256

    61c0f2893ce4d9969c070e342bcf89cbf714adccc06109b24acca31ad65a7ddc

    SHA512

    1bac1b193b01cd07a1a91df266eb25deab5be5bd738d5a82695a1f0048c3544a8ade93c8fe38ae856e6b372cce46bc481aa1b2ba46bfecca144c8daab506f0f4

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    1KB

    MD5

    5d2242ff9dc07b67553123b3c939974d

    SHA1

    ec7b42a468cdb04f1403cd18f67aa4d5af6c5a7f

    SHA256

    27845ed84cb47c4ba2883bdd75c0a0be7035060f6ac845ca256a391bee640716

    SHA512

    25b081ed892b9bc03a7f77c16d110fdc8f03d118689f9773fff258e78a65c0e94c01886e01a4ba0cf5cb7bdb0d7e1e1babb58e1db4ba2582a4e1125b80ebd0ee

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_s00gyvoo.jvx.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\is-5LKTD.tmp\coinbase.tmp

    Filesize

    1.1MB

    MD5

    bcc236a3921e1388596a42b05686ff5e

    SHA1

    43bffbbac6a1bf5f1fa21e971e06e6f1d0af9263

    SHA256

    43a656bcd060e8a36502ca2deb878d56a99078f13d3e57dcd73a87128588c9e9

    SHA512

    e3baaf1a8f4eb0e1ab57a1fb35bc7ded476606b65fafb09835d34705d8c661819c3cfa0ecc43c5a0d0085fd570df581438de27944e054e12c09a6933bbf5ce04

  • C:\Users\Admin\AppData\Local\Temp\is-5RHGQ.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • C:\Users\Admin\AppData\Local\Temp\is-6HUI1.tmp\_isetup\_isdecmp.dll

    Filesize

    13KB

    MD5

    a813d18268affd4763dde940246dc7e5

    SHA1

    c7366e1fd925c17cc6068001bd38eaef5b42852f

    SHA256

    e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

    SHA512

    b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

  • C:\Users\Admin\AppData\Roaming\2crypt32.drv

    Filesize

    1.4MB

    MD5

    221be8861ed61d34671e8960677f4bcd

    SHA1

    cc56c6ed1452545ded9330996e7458b0aedfb2b5

    SHA256

    a4766645820a4f2bb25ef320eafabed7da544be1403eb9290227e751123cb14f

    SHA512

    45c7a7fe74e868b6689b6b1f1a750f2ddabdd1bff37637fcc6aac848a35d01820e820c4271e6f98fcb0a7096f27cadb020cb2ad72c1842add626986d6cc08fda

  • memory/940-100-0x00007FF9A46D0000-0x00007FF9A47E2000-memory.dmp

    Filesize

    1.1MB

  • memory/1656-119-0x00007FF9A46D0000-0x00007FF9A47E2000-memory.dmp

    Filesize

    1.1MB

  • memory/2008-7-0x0000000000400000-0x000000000052D000-memory.dmp

    Filesize

    1.2MB

  • memory/2008-49-0x0000000000400000-0x000000000052D000-memory.dmp

    Filesize

    1.2MB

  • memory/2112-47-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/2112-20-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/2112-18-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/3780-52-0x00000161B8160000-0x00000161B8182000-memory.dmp

    Filesize

    136KB

  • memory/3780-64-0x00000161B8190000-0x00000161B83AC000-memory.dmp

    Filesize

    2.1MB

  • memory/3932-45-0x0000000000400000-0x000000000052D000-memory.dmp

    Filesize

    1.2MB

  • memory/4876-80-0x0000000002850000-0x0000000002868000-memory.dmp

    Filesize

    96KB

  • memory/4876-82-0x00007FF9A46D0000-0x00007FF9A47E2000-memory.dmp

    Filesize

    1.1MB

  • memory/4888-78-0x0000024871DD0000-0x0000024871FEC000-memory.dmp

    Filesize

    2.1MB

  • memory/4996-0-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/4996-50-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/4996-2-0x0000000000401000-0x0000000000417000-memory.dmp

    Filesize

    88KB