Analysis

  • max time kernel
    145s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-en-20211104
  • submitted
    05-11-2021 12:40

General

  • Target

    7355d1a43f1d438e09eebff0c90211b0.exe

  • Size

    227KB

  • MD5

    7355d1a43f1d438e09eebff0c90211b0

  • SHA1

    4d6ca4321e87d5381ceeb1b60c300b7ab69ef30a

  • SHA256

    566e2f01abcfcd6c7b757449819a52e6956f31d389a1b4c6f9dfbf443a97874c

  • SHA512

    867b8beda9c79d09cd40267f254f3134a5a8837cd195c1324a938fa17e53521910f0cc3b038a4676ce84c87bd475778a1900ea80ed03850b3ac7f4141ecbef2e

Malware Config

Extracted

Family

njrat

Version

v4.0

Botnet

DirectX

C2

20.79.249.125:1604

Mutex

Windows

Attributes
  • reg_key

    Windows

  • splitter

    |-F-|

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • UAC bypass 3 TTPs
  • Windows security bypass 2 TTPs
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

  • Nirsoft 7 IoCs
  • Executes dropped EXE 3 IoCs
  • Drops startup file 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Windows security modification 2 TTPs 10 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 38 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7355d1a43f1d438e09eebff0c90211b0.exe
    "C:\Users\Admin\AppData\Local\Temp\7355d1a43f1d438e09eebff0c90211b0.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Windows security modification
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:852
    • C:\Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:108
      • C:\Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe" /SpecialRun 4101d8 108
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:240
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\7355d1a43f1d438e09eebff0c90211b0.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1632
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\7355d1a43f1d438e09eebff0c90211b0.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1780
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\䁢䁞䁟䀾䀲䀰䁔䁢䀰䀵䀴䀱䁝䁟䀾.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1432
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\䁢䁞䁟䀾䀲䀰䁔䁢䀰䀵䀴䀱䁝䁟䀾.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1840
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\7355d1a43f1d438e09eebff0c90211b0.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1920
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\䁢䁞䁟䀾䀲䀰䁔䁢䀰䀵䀴䀱䁝䁟䀾.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\䁢䁞䁟䀾䀲䀰䁔䁢䀰䀵䀴䀱䁝䁟䀾.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2004
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Microsoft.NET\Framework\‌ ‌‌ ›‼‍‽
 ‍​‏ \svchost.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1324
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\7355d1a43f1d438e09eebff0c90211b0.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1580
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Microsoft.NET\Framework\‌ ‌‌ ›‼‍‽
 ‍​‏ \svchost.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1800

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Modify Registry

6
T1112

Disabling Security Tools

4
T1089

Bypass User Account Control

1
T1088

Discovery

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • C:\Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • C:\Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    MD5

    e8eeaa120d2b4780e5a90ff136cd8af3

    SHA1

    d9b1b31cbf56399cf92a4e49d5ddabacd2bd1a2d

    SHA256

    242c66546a755c00600efc29de65711d453ce503cb846f2bfda86759e807fd15

    SHA512

    e1bdee736db768b1ce8ae985da9053d5ac71ebb4c1344e6b23c852270c218a5b42741217790b1486bd305ad56f4ef82a19793aafaceb1b3cc32b56d6751cfc35

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    MD5

    e8eeaa120d2b4780e5a90ff136cd8af3

    SHA1

    d9b1b31cbf56399cf92a4e49d5ddabacd2bd1a2d

    SHA256

    242c66546a755c00600efc29de65711d453ce503cb846f2bfda86759e807fd15

    SHA512

    e1bdee736db768b1ce8ae985da9053d5ac71ebb4c1344e6b23c852270c218a5b42741217790b1486bd305ad56f4ef82a19793aafaceb1b3cc32b56d6751cfc35

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    MD5

    e8eeaa120d2b4780e5a90ff136cd8af3

    SHA1

    d9b1b31cbf56399cf92a4e49d5ddabacd2bd1a2d

    SHA256

    242c66546a755c00600efc29de65711d453ce503cb846f2bfda86759e807fd15

    SHA512

    e1bdee736db768b1ce8ae985da9053d5ac71ebb4c1344e6b23c852270c218a5b42741217790b1486bd305ad56f4ef82a19793aafaceb1b3cc32b56d6751cfc35

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    MD5

    e8eeaa120d2b4780e5a90ff136cd8af3

    SHA1

    d9b1b31cbf56399cf92a4e49d5ddabacd2bd1a2d

    SHA256

    242c66546a755c00600efc29de65711d453ce503cb846f2bfda86759e807fd15

    SHA512

    e1bdee736db768b1ce8ae985da9053d5ac71ebb4c1344e6b23c852270c218a5b42741217790b1486bd305ad56f4ef82a19793aafaceb1b3cc32b56d6751cfc35

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    MD5

    e8eeaa120d2b4780e5a90ff136cd8af3

    SHA1

    d9b1b31cbf56399cf92a4e49d5ddabacd2bd1a2d

    SHA256

    242c66546a755c00600efc29de65711d453ce503cb846f2bfda86759e807fd15

    SHA512

    e1bdee736db768b1ce8ae985da9053d5ac71ebb4c1344e6b23c852270c218a5b42741217790b1486bd305ad56f4ef82a19793aafaceb1b3cc32b56d6751cfc35

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    MD5

    e8eeaa120d2b4780e5a90ff136cd8af3

    SHA1

    d9b1b31cbf56399cf92a4e49d5ddabacd2bd1a2d

    SHA256

    242c66546a755c00600efc29de65711d453ce503cb846f2bfda86759e807fd15

    SHA512

    e1bdee736db768b1ce8ae985da9053d5ac71ebb4c1344e6b23c852270c218a5b42741217790b1486bd305ad56f4ef82a19793aafaceb1b3cc32b56d6751cfc35

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\䁢䁞䁟䀾䀲䀰䁔䁢䀰䀵䀴䀱䁝䁟䀾.exe
    MD5

    7355d1a43f1d438e09eebff0c90211b0

    SHA1

    4d6ca4321e87d5381ceeb1b60c300b7ab69ef30a

    SHA256

    566e2f01abcfcd6c7b757449819a52e6956f31d389a1b4c6f9dfbf443a97874c

    SHA512

    867b8beda9c79d09cd40267f254f3134a5a8837cd195c1324a938fa17e53521910f0cc3b038a4676ce84c87bd475778a1900ea80ed03850b3ac7f4141ecbef2e

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\䁢䁞䁟䀾䀲䀰䁔䁢䀰䀵䀴䀱䁝䁟䀾.exe
    MD5

    7355d1a43f1d438e09eebff0c90211b0

    SHA1

    4d6ca4321e87d5381ceeb1b60c300b7ab69ef30a

    SHA256

    566e2f01abcfcd6c7b757449819a52e6956f31d389a1b4c6f9dfbf443a97874c

    SHA512

    867b8beda9c79d09cd40267f254f3134a5a8837cd195c1324a938fa17e53521910f0cc3b038a4676ce84c87bd475778a1900ea80ed03850b3ac7f4141ecbef2e

  • \Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\4e525dca-117a-4882-b059-185fd0d147e1\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\䁢䁞䁟䀾䀲䀰䁔䁢䀰䀵䀴䀱䁝䁟䀾.exe
    MD5

    7355d1a43f1d438e09eebff0c90211b0

    SHA1

    4d6ca4321e87d5381ceeb1b60c300b7ab69ef30a

    SHA256

    566e2f01abcfcd6c7b757449819a52e6956f31d389a1b4c6f9dfbf443a97874c

    SHA512

    867b8beda9c79d09cd40267f254f3134a5a8837cd195c1324a938fa17e53521910f0cc3b038a4676ce84c87bd475778a1900ea80ed03850b3ac7f4141ecbef2e

  • memory/108-65-0x0000000000000000-mapping.dmp
  • memory/240-71-0x0000000000000000-mapping.dmp
  • memory/852-107-0x0000000000960000-0x0000000000967000-memory.dmp
    Filesize

    28KB

  • memory/852-57-0x0000000075491000-0x0000000075493000-memory.dmp
    Filesize

    8KB

  • memory/852-60-0x00000000004C0000-0x00000000004C3000-memory.dmp
    Filesize

    12KB

  • memory/852-61-0x0000000000B20000-0x0000000000B21000-memory.dmp
    Filesize

    4KB

  • memory/852-58-0x0000000000C80000-0x0000000000C81000-memory.dmp
    Filesize

    4KB

  • memory/852-62-0x00000000008D0000-0x0000000000922000-memory.dmp
    Filesize

    328KB

  • memory/852-55-0x0000000001170000-0x0000000001171000-memory.dmp
    Filesize

    4KB

  • memory/1324-90-0x0000000000000000-mapping.dmp
  • memory/1324-109-0x0000000002320000-0x0000000002F6A000-memory.dmp
    Filesize

    12.3MB

  • memory/1432-114-0x0000000002390000-0x0000000002FDA000-memory.dmp
    Filesize

    12.3MB

  • memory/1432-77-0x0000000000000000-mapping.dmp
  • memory/1580-112-0x0000000002540000-0x000000000318A000-memory.dmp
    Filesize

    12.3MB

  • memory/1580-92-0x0000000000000000-mapping.dmp
  • memory/1632-74-0x0000000000000000-mapping.dmp
  • memory/1632-113-0x0000000002330000-0x0000000002F7A000-memory.dmp
    Filesize

    12.3MB

  • memory/1632-118-0x0000000002330000-0x0000000002F7A000-memory.dmp
    Filesize

    12.3MB

  • memory/1780-110-0x00000000004F0000-0x00000000004F1000-memory.dmp
    Filesize

    4KB

  • memory/1780-75-0x0000000000000000-mapping.dmp
  • memory/1780-117-0x00000000004F2000-0x00000000004F4000-memory.dmp
    Filesize

    8KB

  • memory/1780-111-0x00000000004F1000-0x00000000004F2000-memory.dmp
    Filesize

    4KB

  • memory/1800-115-0x0000000002410000-0x000000000305A000-memory.dmp
    Filesize

    12.3MB

  • memory/1800-99-0x0000000000000000-mapping.dmp
  • memory/1840-108-0x0000000002590000-0x00000000031DA000-memory.dmp
    Filesize

    12.3MB

  • memory/1840-79-0x0000000000000000-mapping.dmp
  • memory/1920-81-0x0000000000000000-mapping.dmp
  • memory/1920-116-0x0000000002370000-0x0000000002FBA000-memory.dmp
    Filesize

    12.3MB

  • memory/2004-94-0x0000000004730000-0x0000000004731000-memory.dmp
    Filesize

    4KB

  • memory/2004-88-0x0000000001250000-0x0000000001251000-memory.dmp
    Filesize

    4KB

  • memory/2004-84-0x0000000000000000-mapping.dmp
  • memory/2004-97-0x00000000046F0000-0x00000000046F1000-memory.dmp
    Filesize

    4KB