Analysis

  • max time kernel
    125s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-06-2023 00:39

General

  • Target

    file.exe

  • Size

    1.1MB

  • MD5

    06eae25115858e2475c1bab16bae9585

  • SHA1

    657cdc54121fa9baaae7cc944ed935e1eddf4ebc

  • SHA256

    d9bed95674d8f25aba2b84067e0691d254c86d686a4ec42dec119a8a2b006c98

  • SHA512

    2ad4ccbbf950dac84d2353b9d59e8d59415ec3f9bef1d226270ebc4f416489dc6c39b5c4725dd10316b2cbc6adc8bef3e7db8e430ed581444857db8e0d0c53d1

  • SSDEEP

    12288:aRZ+IoG/n9IQxW3OBsee2X+t4RbiYS3HzuWTEv3L9aCcyYiqlbl117n1k4Rq5zs:U2G/nvxW3Ww0t03THqRaCQJThLis

Score
10/10

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Process spawned unexpected child process 39 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • DCRat payload 6 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Drops file in Program Files directory 10 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 39 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1624
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\providerwindriverHostDll\eQhltUTnqbyYIJBHh.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4384
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\providerwindriverHostDll\5O0IdEW060cxJkvUmnX.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2568
        • C:\providerwindriverHostDll\comNet.exe
          "C:\providerwindriverHostDll\comNet.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3752
          • C:\Program Files (x86)\Windows NT\TableTextService\StartMenuExperienceHost.exe
            "C:\Program Files (x86)\Windows NT\TableTextService\StartMenuExperienceHost.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:4896
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 7 /tr "'C:\providerwindriverHostDll\System.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1464
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\providerwindriverHostDll\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:208
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 6 /tr "'C:\providerwindriverHostDll\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2436
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\lsass.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2804
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\TableTextService\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:432
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4508
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\providerwindriverHostDll\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4084
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\providerwindriverHostDll\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2384
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\providerwindriverHostDll\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1180
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Windows\Installer\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\winlogon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1876
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\Installer\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1128
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Windows\Installer\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3080
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\spoolsv.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4536
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3672
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2100
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\odt\lsass.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2156
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\odt\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3544
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'C:\odt\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4040
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Portable Devices\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:892
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:860
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Portable Devices\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 12 /tr "'C:\Users\All Users\Package Cache\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2464
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\All Users\Package Cache\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1304
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Package Cache\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2512
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:444
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3512
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4600
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\StartMenuExperienceHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:684
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\TableTextService\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2752
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2872
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\odt\explorer.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3756
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\odt\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3980
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\odt\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4528
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\SearchApp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3396
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2036
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1208
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 9 /tr "'C:\odt\Registry.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4904
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\odt\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3208
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 5 /tr "'C:\odt\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1500

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\Windows NT\TableTextService\StartMenuExperienceHost.exe
    Filesize

    827KB

    MD5

    2b84697f835c36d37b5dc11106d655f5

    SHA1

    1f406d774af24ba55e55fcf03ee5928905fe7123

    SHA256

    148197a0b0db24058a70a599a00ff4111376d4d085f796b3a5a3ad767d9ed731

    SHA512

    ad2d09513a04d055e26d3bce550bb2f7b577aba2449e9d2fb2454b6f58187441922acf541ca79be712f37d61ba16aead9aefd8f2d11a7180444d6ea69f0ee934

  • C:\Program Files (x86)\Windows NT\TableTextService\StartMenuExperienceHost.exe
    Filesize

    827KB

    MD5

    2b84697f835c36d37b5dc11106d655f5

    SHA1

    1f406d774af24ba55e55fcf03ee5928905fe7123

    SHA256

    148197a0b0db24058a70a599a00ff4111376d4d085f796b3a5a3ad767d9ed731

    SHA512

    ad2d09513a04d055e26d3bce550bb2f7b577aba2449e9d2fb2454b6f58187441922acf541ca79be712f37d61ba16aead9aefd8f2d11a7180444d6ea69f0ee934

  • C:\Program Files (x86)\Windows NT\TableTextService\lsass.exe
    Filesize

    827KB

    MD5

    2b84697f835c36d37b5dc11106d655f5

    SHA1

    1f406d774af24ba55e55fcf03ee5928905fe7123

    SHA256

    148197a0b0db24058a70a599a00ff4111376d4d085f796b3a5a3ad767d9ed731

    SHA512

    ad2d09513a04d055e26d3bce550bb2f7b577aba2449e9d2fb2454b6f58187441922acf541ca79be712f37d61ba16aead9aefd8f2d11a7180444d6ea69f0ee934

  • C:\providerwindriverHostDll\5O0IdEW060cxJkvUmnX.bat
    Filesize

    40B

    MD5

    b7f686a12452b0e946a2b35746aa85d8

    SHA1

    3637b428ac91dd8e93259eb32e9fd8d1f43825f5

    SHA256

    91a97a0a5785891a0c5c68a17625dbd99324eb363f0c13707f9ba9be9417253f

    SHA512

    e70765edac455c33ac137ae6b3e67db616fcbbfe82298b5bbd59dc5179126ecc015fe4c18e9a0bd668da826d2cd4d2e3276dab7ed0331db7892795d6221c4ba8

  • C:\providerwindriverHostDll\comNet.exe
    Filesize

    827KB

    MD5

    2b84697f835c36d37b5dc11106d655f5

    SHA1

    1f406d774af24ba55e55fcf03ee5928905fe7123

    SHA256

    148197a0b0db24058a70a599a00ff4111376d4d085f796b3a5a3ad767d9ed731

    SHA512

    ad2d09513a04d055e26d3bce550bb2f7b577aba2449e9d2fb2454b6f58187441922acf541ca79be712f37d61ba16aead9aefd8f2d11a7180444d6ea69f0ee934

  • C:\providerwindriverHostDll\comNet.exe
    Filesize

    827KB

    MD5

    2b84697f835c36d37b5dc11106d655f5

    SHA1

    1f406d774af24ba55e55fcf03ee5928905fe7123

    SHA256

    148197a0b0db24058a70a599a00ff4111376d4d085f796b3a5a3ad767d9ed731

    SHA512

    ad2d09513a04d055e26d3bce550bb2f7b577aba2449e9d2fb2454b6f58187441922acf541ca79be712f37d61ba16aead9aefd8f2d11a7180444d6ea69f0ee934

  • C:\providerwindriverHostDll\eQhltUTnqbyYIJBHh.vbe
    Filesize

    220B

    MD5

    175e0c8fb6f8d79de10516a3c70b8bd4

    SHA1

    c46ecb7f245a26cc06f9c227b75cb0e51fa5a922

    SHA256

    c2d8a00d704a88597d0d1a31b06965713efbf55a6ec68e567fccd4e0ad236079

    SHA512

    d2895a6260801876bac10b885e137bb3a1a62972d55660e45829aeafc76d25baa8af7857eb2a3d7245ee58404699278e24db4fe7e498f465e294b42578c60926

  • memory/3752-145-0x0000000000480000-0x0000000000556000-memory.dmp
    Filesize

    856KB

  • memory/3752-146-0x000000001B1C0000-0x000000001B1D0000-memory.dmp
    Filesize

    64KB

  • memory/4896-184-0x000000001B940000-0x000000001B950000-memory.dmp
    Filesize

    64KB

  • memory/4896-185-0x000000001B940000-0x000000001B950000-memory.dmp
    Filesize

    64KB