Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 12:25

General

  • Target

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87.exe

  • Size

    158KB

  • MD5

    f8fb5200c192966250611f9ddbda3d50

  • SHA1

    0c1566727d34c9403073bbb24b89bd04155864ff

  • SHA256

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87

  • SHA512

    db55e806b3a4f46f203677e5897833966122ec7d6a12a22c15e061e2a54aa46d3953641e3cee7ce113be1e61c0ca7dbec630a2bd2ac2c3ace37bbedc12df2351

  • SSDEEP

    3072:X7sYnxbYIVwsOmVZNFPYuoE2Ol/uyQT2v+6:XgYxbYtu7PYPE2Ol

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

Clients

C2

nyheu3938.no-ip.biz:1199

Mutex

749e61bd02cc756ea373bd81808cdf08

Attributes
  • reg_key

    749e61bd02cc756ea373bd81808cdf08

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 5 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87.exe
    "C:\Users\Admin\AppData\Local\Temp\c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Users\Admin\AppData\Local\Temp\c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87.exe
      "C:\Users\Admin\AppData\Local\Temp\c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1864
      • C:\Users\Admin\AppData\Roaming\notepad.exe
        "C:\Users\Admin\AppData\Roaming\notepad.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:772
        • C:\Users\Admin\AppData\Roaming\notepad.exe
          "C:\Users\Admin\AppData\Roaming\notepad.exe"
          4⤵
          • Executes dropped EXE
          • Drops startup file
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2044
          • C:\Windows\SysWOW64\netsh.exe
            netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\notepad.exe" "notepad.exe" ENABLE
            5⤵
            • Modifies Windows Firewall
            PID:2000
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:892
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1060
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe"
          4⤵
          • Executes dropped EXE
          PID:628

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe
    Filesize

    11KB

    MD5

    d9545d0b3e923742216f06c0b026d770

    SHA1

    144bda18c45a70471978cbeb9b7e7915efd22b31

    SHA256

    69404f1a879a594baf3bf02e4bc51d96984f466580be3f7bc65c69b7b1286bef

    SHA512

    488d7c735a45fd057d724723e6efbd03496afaab32915ace9b35b1655b929bb997ffa178a15d5e9825ab4003a3bedd0c18397a7f5bcdc20f318ed9f3370f87f2

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe
    Filesize

    11KB

    MD5

    d9545d0b3e923742216f06c0b026d770

    SHA1

    144bda18c45a70471978cbeb9b7e7915efd22b31

    SHA256

    69404f1a879a594baf3bf02e4bc51d96984f466580be3f7bc65c69b7b1286bef

    SHA512

    488d7c735a45fd057d724723e6efbd03496afaab32915ace9b35b1655b929bb997ffa178a15d5e9825ab4003a3bedd0c18397a7f5bcdc20f318ed9f3370f87f2

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe
    Filesize

    158KB

    MD5

    f8fb5200c192966250611f9ddbda3d50

    SHA1

    0c1566727d34c9403073bbb24b89bd04155864ff

    SHA256

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87

    SHA512

    db55e806b3a4f46f203677e5897833966122ec7d6a12a22c15e061e2a54aa46d3953641e3cee7ce113be1e61c0ca7dbec630a2bd2ac2c3ace37bbedc12df2351

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe
    Filesize

    158KB

    MD5

    f8fb5200c192966250611f9ddbda3d50

    SHA1

    0c1566727d34c9403073bbb24b89bd04155864ff

    SHA256

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87

    SHA512

    db55e806b3a4f46f203677e5897833966122ec7d6a12a22c15e061e2a54aa46d3953641e3cee7ce113be1e61c0ca7dbec630a2bd2ac2c3ace37bbedc12df2351

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe
    Filesize

    158KB

    MD5

    f8fb5200c192966250611f9ddbda3d50

    SHA1

    0c1566727d34c9403073bbb24b89bd04155864ff

    SHA256

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87

    SHA512

    db55e806b3a4f46f203677e5897833966122ec7d6a12a22c15e061e2a54aa46d3953641e3cee7ce113be1e61c0ca7dbec630a2bd2ac2c3ace37bbedc12df2351

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe
    Filesize

    158KB

    MD5

    f8fb5200c192966250611f9ddbda3d50

    SHA1

    0c1566727d34c9403073bbb24b89bd04155864ff

    SHA256

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87

    SHA512

    db55e806b3a4f46f203677e5897833966122ec7d6a12a22c15e061e2a54aa46d3953641e3cee7ce113be1e61c0ca7dbec630a2bd2ac2c3ace37bbedc12df2351

  • C:\Users\Admin\AppData\Roaming\notepad.exe
    Filesize

    158KB

    MD5

    f8fb5200c192966250611f9ddbda3d50

    SHA1

    0c1566727d34c9403073bbb24b89bd04155864ff

    SHA256

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87

    SHA512

    db55e806b3a4f46f203677e5897833966122ec7d6a12a22c15e061e2a54aa46d3953641e3cee7ce113be1e61c0ca7dbec630a2bd2ac2c3ace37bbedc12df2351

  • C:\Users\Admin\AppData\Roaming\notepad.exe
    Filesize

    158KB

    MD5

    f8fb5200c192966250611f9ddbda3d50

    SHA1

    0c1566727d34c9403073bbb24b89bd04155864ff

    SHA256

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87

    SHA512

    db55e806b3a4f46f203677e5897833966122ec7d6a12a22c15e061e2a54aa46d3953641e3cee7ce113be1e61c0ca7dbec630a2bd2ac2c3ace37bbedc12df2351

  • C:\Users\Admin\AppData\Roaming\notepad.exe
    Filesize

    158KB

    MD5

    f8fb5200c192966250611f9ddbda3d50

    SHA1

    0c1566727d34c9403073bbb24b89bd04155864ff

    SHA256

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87

    SHA512

    db55e806b3a4f46f203677e5897833966122ec7d6a12a22c15e061e2a54aa46d3953641e3cee7ce113be1e61c0ca7dbec630a2bd2ac2c3ace37bbedc12df2351

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe
    Filesize

    11KB

    MD5

    d9545d0b3e923742216f06c0b026d770

    SHA1

    144bda18c45a70471978cbeb9b7e7915efd22b31

    SHA256

    69404f1a879a594baf3bf02e4bc51d96984f466580be3f7bc65c69b7b1286bef

    SHA512

    488d7c735a45fd057d724723e6efbd03496afaab32915ace9b35b1655b929bb997ffa178a15d5e9825ab4003a3bedd0c18397a7f5bcdc20f318ed9f3370f87f2

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe
    Filesize

    158KB

    MD5

    f8fb5200c192966250611f9ddbda3d50

    SHA1

    0c1566727d34c9403073bbb24b89bd04155864ff

    SHA256

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87

    SHA512

    db55e806b3a4f46f203677e5897833966122ec7d6a12a22c15e061e2a54aa46d3953641e3cee7ce113be1e61c0ca7dbec630a2bd2ac2c3ace37bbedc12df2351

  • \Users\Admin\AppData\Roaming\notepad.exe
    Filesize

    158KB

    MD5

    f8fb5200c192966250611f9ddbda3d50

    SHA1

    0c1566727d34c9403073bbb24b89bd04155864ff

    SHA256

    c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87

    SHA512

    db55e806b3a4f46f203677e5897833966122ec7d6a12a22c15e061e2a54aa46d3953641e3cee7ce113be1e61c0ca7dbec630a2bd2ac2c3ace37bbedc12df2351

  • memory/628-121-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/628-114-0x0000000000408B0E-mapping.dmp
  • memory/772-73-0x0000000000000000-mapping.dmp
  • memory/772-124-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/772-82-0x00000000004F0000-0x0000000000503000-memory.dmp
    Filesize

    76KB

  • memory/772-81-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/892-85-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/892-71-0x0000000000000000-mapping.dmp
  • memory/892-125-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/1060-105-0x0000000000740000-0x0000000000753000-memory.dmp
    Filesize

    76KB

  • memory/1060-102-0x0000000000000000-mapping.dmp
  • memory/1060-127-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/1060-107-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/1444-84-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/1444-55-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/1444-56-0x000000000053F000-0x0000000000552000-memory.dmp
    Filesize

    76KB

  • memory/1444-57-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/1444-54-0x0000000075D71000-0x0000000075D73000-memory.dmp
    Filesize

    8KB

  • memory/1864-58-0x0000000000400000-0x000000000040E000-memory.dmp
    Filesize

    56KB

  • memory/1864-66-0x0000000000400000-0x000000000040E000-memory.dmp
    Filesize

    56KB

  • memory/1864-61-0x0000000000400000-0x000000000040E000-memory.dmp
    Filesize

    56KB

  • memory/1864-63-0x0000000000400000-0x000000000040E000-memory.dmp
    Filesize

    56KB

  • memory/1864-83-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/1864-64-0x0000000000408B0E-mapping.dmp
  • memory/1864-59-0x0000000000400000-0x000000000040E000-memory.dmp
    Filesize

    56KB

  • memory/1864-75-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/1864-68-0x0000000000400000-0x000000000040E000-memory.dmp
    Filesize

    56KB

  • memory/1864-62-0x0000000000400000-0x000000000040E000-memory.dmp
    Filesize

    56KB

  • memory/2000-122-0x0000000000000000-mapping.dmp
  • memory/2044-93-0x0000000000408B0E-mapping.dmp
  • memory/2044-126-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB

  • memory/2044-106-0x0000000074850000-0x0000000074DFB000-memory.dmp
    Filesize

    5.7MB