Analysis

  • max time kernel
    38s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-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 27 IoCs

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

  • DCRat payload 12 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 27 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 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⤵
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\providerwindriverHostDll\eQhltUTnqbyYIJBHh.vbe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:940
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\providerwindriverHostDll\5O0IdEW060cxJkvUmnX.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:472
        • C:\providerwindriverHostDll\comNet.exe
          "C:\providerwindriverHostDll\comNet.exe"
          4⤵
          • 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:588
          • C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WMIADAP.exe
            "C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WMIADAP.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1656
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 14 /tr "'C:\providerwindriverHostDll\conhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1756
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\providerwindriverHostDll\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1676
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 8 /tr "'C:\providerwindriverHostDll\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:632
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Internet Explorer\fr-FR\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1940
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\fr-FR\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:268
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Internet Explorer\fr-FR\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1512
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAPW" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WMIADAP.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1780
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAP" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WMIADAP.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1388
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAPW" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WMIADAP.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1148
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 14 /tr "'C:\Program Files\Internet Explorer\en-US\winlogon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2012
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\en-US\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:960
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 13 /tr "'C:\Program Files\Internet Explorer\en-US\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1812
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\providerwindriverHostDll\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1768
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\providerwindriverHostDll\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1932
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\providerwindriverHostDll\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:576
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "comNetc" /sc MINUTE /mo 11 /tr "'C:\Windows\de-DE\comNet.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1588
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "comNet" /sc ONLOGON /tr "'C:\Windows\de-DE\comNet.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1764
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "comNetc" /sc MINUTE /mo 14 /tr "'C:\Windows\de-DE\comNet.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:524
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsml" /sc MINUTE /mo 6 /tr "'C:\Users\Default User\lsm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1412
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Users\Default User\lsm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:336
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsml" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\lsm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1528
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAPW" /sc MINUTE /mo 7 /tr "'C:\Windows\Offline Web Pages\WMIADAP.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:640
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAP" /sc ONLOGON /tr "'C:\Windows\Offline Web Pages\WMIADAP.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1000
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAPW" /sc MINUTE /mo 11 /tr "'C:\Windows\Offline Web Pages\WMIADAP.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1700
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-00BA-0409-0000-0000000FF1CE}-C\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1060
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-00BA-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:948
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-00BA-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1872

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

System Information Discovery

1
T1082

Query Registry

1
T1012

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WMIADAP.exe
    Filesize

    827KB

    MD5

    2b84697f835c36d37b5dc11106d655f5

    SHA1

    1f406d774af24ba55e55fcf03ee5928905fe7123

    SHA256

    148197a0b0db24058a70a599a00ff4111376d4d085f796b3a5a3ad767d9ed731

    SHA512

    ad2d09513a04d055e26d3bce550bb2f7b577aba2449e9d2fb2454b6f58187441922acf541ca79be712f37d61ba16aead9aefd8f2d11a7180444d6ea69f0ee934

  • C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WMIADAP.exe
    Filesize

    827KB

    MD5

    2b84697f835c36d37b5dc11106d655f5

    SHA1

    1f406d774af24ba55e55fcf03ee5928905fe7123

    SHA256

    148197a0b0db24058a70a599a00ff4111376d4d085f796b3a5a3ad767d9ed731

    SHA512

    ad2d09513a04d055e26d3bce550bb2f7b577aba2449e9d2fb2454b6f58187441922acf541ca79be712f37d61ba16aead9aefd8f2d11a7180444d6ea69f0ee934

  • C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WMIADAP.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

  • \providerwindriverHostDll\comNet.exe
    Filesize

    827KB

    MD5

    2b84697f835c36d37b5dc11106d655f5

    SHA1

    1f406d774af24ba55e55fcf03ee5928905fe7123

    SHA256

    148197a0b0db24058a70a599a00ff4111376d4d085f796b3a5a3ad767d9ed731

    SHA512

    ad2d09513a04d055e26d3bce550bb2f7b577aba2449e9d2fb2454b6f58187441922acf541ca79be712f37d61ba16aead9aefd8f2d11a7180444d6ea69f0ee934

  • \providerwindriverHostDll\comNet.exe
    Filesize

    827KB

    MD5

    2b84697f835c36d37b5dc11106d655f5

    SHA1

    1f406d774af24ba55e55fcf03ee5928905fe7123

    SHA256

    148197a0b0db24058a70a599a00ff4111376d4d085f796b3a5a3ad767d9ed731

    SHA512

    ad2d09513a04d055e26d3bce550bb2f7b577aba2449e9d2fb2454b6f58187441922acf541ca79be712f37d61ba16aead9aefd8f2d11a7180444d6ea69f0ee934

  • memory/588-72-0x000000001AFB0000-0x000000001B030000-memory.dmp
    Filesize

    512KB

  • memory/588-67-0x0000000001180000-0x0000000001256000-memory.dmp
    Filesize

    856KB

  • memory/1656-93-0x0000000001000000-0x00000000010D6000-memory.dmp
    Filesize

    856KB

  • memory/1656-94-0x000000001AED0000-0x000000001AF50000-memory.dmp
    Filesize

    512KB

  • memory/1656-95-0x000000001AED0000-0x000000001AF50000-memory.dmp
    Filesize

    512KB