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Analysis

  • max time kernel
    148s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    11/10/2023, 06:13

General

  • Target

    9a2206d003d9d376706d886d987773f6_JC.exe

  • Size

    132KB

  • MD5

    9a2206d003d9d376706d886d987773f6

  • SHA1

    22215da078d6a8ea5ca7d84a23c38bcadd0513ef

  • SHA256

    71e842200ac81b7d9d05992724e80618f8cf38b935b056dc741c08d187c0d013

  • SHA512

    0f8729d01296e6725ac0fe349dd4714f1788b7793d0ef73eddc261c5fb2d7376fada6a89167d5b5d31d3fc3a753c85fcd3c183b94dcf8dd8ffbbaa3d9300baf2

  • SSDEEP

    1536:B3aacz2htqkUla/NGVcJ/gAqcX0JMseuiGSeNVvDi0tMuUJJny3GM+90:Ua/qc9rqzMseNoVv9EJFnM80

Malware Config

Signatures

  • Blocklisted process makes network request 9 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9a2206d003d9d376706d886d987773f6_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\9a2206d003d9d376706d886d987773f6_JC.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2480
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&c:\lgainr.exe "C:\Users\Admin\AppData\Local\Temp\9a2206d003d9d376706d886d987773f6_JC.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2460
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2044
      • \??\c:\lgainr.exe
        c:\lgainr.exe "C:\Users\Admin\AppData\Local\Temp\9a2206d003d9d376706d886d987773f6_JC.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2292
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\mxlnz\bnjvg.dll",init c:\lgainr.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1516

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\lgainr.exe

    Filesize

    132KB

    MD5

    d6e605be27b7e013c8383163705f4e26

    SHA1

    5b556cc9942a78e7961bd71709cb7c071580ff15

    SHA256

    9bc4bebf289c922bd4b9f8bd10fc09d92c212bb09afe47bc46f88b3fcc0c74ca

    SHA512

    34e5f2750f3d285ea292293129e5af7112f72b085c1b532ea7dbc0216372fa77e991288fb9493c58a264e47faec837cd2eb6dfaf30fca9adb998f2df22f04564

  • \??\c:\lgainr.exe

    Filesize

    132KB

    MD5

    d6e605be27b7e013c8383163705f4e26

    SHA1

    5b556cc9942a78e7961bd71709cb7c071580ff15

    SHA256

    9bc4bebf289c922bd4b9f8bd10fc09d92c212bb09afe47bc46f88b3fcc0c74ca

    SHA512

    34e5f2750f3d285ea292293129e5af7112f72b085c1b532ea7dbc0216372fa77e991288fb9493c58a264e47faec837cd2eb6dfaf30fca9adb998f2df22f04564

  • \??\c:\mxlnz\bnjvg.dll

    Filesize

    50KB

    MD5

    ab32c5bfd7ecfbe9ed733dfb81210933

    SHA1

    4d5c6e7a0031691f12e78b096ff928b0d55bdfab

    SHA256

    a632527bcd457c9a4cfce83e7a9a675baff790b0279de5d8ea3192dfb2dd888a

    SHA512

    59b971146292074d76d23d5f26889108f4d6e33804332449f4c589bf8a8d53e37ac8dfea47e9d3c5ae0f382ae1acf25c4968bea87b3f5ff9d51f2274229c1ab5

  • \mxlnz\bnjvg.dll

    Filesize

    50KB

    MD5

    ab32c5bfd7ecfbe9ed733dfb81210933

    SHA1

    4d5c6e7a0031691f12e78b096ff928b0d55bdfab

    SHA256

    a632527bcd457c9a4cfce83e7a9a675baff790b0279de5d8ea3192dfb2dd888a

    SHA512

    59b971146292074d76d23d5f26889108f4d6e33804332449f4c589bf8a8d53e37ac8dfea47e9d3c5ae0f382ae1acf25c4968bea87b3f5ff9d51f2274229c1ab5

  • \mxlnz\bnjvg.dll

    Filesize

    50KB

    MD5

    ab32c5bfd7ecfbe9ed733dfb81210933

    SHA1

    4d5c6e7a0031691f12e78b096ff928b0d55bdfab

    SHA256

    a632527bcd457c9a4cfce83e7a9a675baff790b0279de5d8ea3192dfb2dd888a

    SHA512

    59b971146292074d76d23d5f26889108f4d6e33804332449f4c589bf8a8d53e37ac8dfea47e9d3c5ae0f382ae1acf25c4968bea87b3f5ff9d51f2274229c1ab5

  • \mxlnz\bnjvg.dll

    Filesize

    50KB

    MD5

    ab32c5bfd7ecfbe9ed733dfb81210933

    SHA1

    4d5c6e7a0031691f12e78b096ff928b0d55bdfab

    SHA256

    a632527bcd457c9a4cfce83e7a9a675baff790b0279de5d8ea3192dfb2dd888a

    SHA512

    59b971146292074d76d23d5f26889108f4d6e33804332449f4c589bf8a8d53e37ac8dfea47e9d3c5ae0f382ae1acf25c4968bea87b3f5ff9d51f2274229c1ab5

  • \mxlnz\bnjvg.dll

    Filesize

    50KB

    MD5

    ab32c5bfd7ecfbe9ed733dfb81210933

    SHA1

    4d5c6e7a0031691f12e78b096ff928b0d55bdfab

    SHA256

    a632527bcd457c9a4cfce83e7a9a675baff790b0279de5d8ea3192dfb2dd888a

    SHA512

    59b971146292074d76d23d5f26889108f4d6e33804332449f4c589bf8a8d53e37ac8dfea47e9d3c5ae0f382ae1acf25c4968bea87b3f5ff9d51f2274229c1ab5

  • memory/1516-12-0x0000000010000000-0x0000000010032000-memory.dmp

    Filesize

    200KB

  • memory/1516-13-0x0000000010000000-0x0000000010032000-memory.dmp

    Filesize

    200KB

  • memory/1516-14-0x0000000010000000-0x0000000010032000-memory.dmp

    Filesize

    200KB

  • memory/2292-6-0x0000000000400000-0x0000000000423000-memory.dmp

    Filesize

    140KB

  • memory/2480-0-0x0000000000400000-0x0000000000423000-memory.dmp

    Filesize

    140KB

  • memory/2480-2-0x0000000000400000-0x0000000000423000-memory.dmp

    Filesize

    140KB