Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-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 7 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 5 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 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 6 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87.exe
    "C:\Users\Admin\AppData\Local\Temp\c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3248
    • C:\Users\Admin\AppData\Local\Temp\c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87.exe
      "C:\Users\Admin\AppData\Local\Temp\c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:3548
      • C:\Users\Admin\AppData\Roaming\notepad.exe
        "C:\Users\Admin\AppData\Roaming\notepad.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2276
        • 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:3440
          • C:\Windows\SysWOW64\netsh.exe
            netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\notepad.exe" "notepad.exe" ENABLE
            5⤵
            • Modifies Windows Firewall
            PID:1684
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1168
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe"
            5⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3696
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe
              "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\hkmsvc.exe"
              6⤵
              • Executes dropped EXE
              PID:4340
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe
              "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              PID:4796
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AppMgmt.exe"
      2⤵
      • Executes dropped EXE
      PID:4968

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

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\AppMgmt.exe.log
    Filesize

    404B

    MD5

    15b6596d028baa2a113143d1828bcc36

    SHA1

    f1be43126c4e765fe499718c388823d44bf1fef1

    SHA256

    529f9fde2234067382b4c6fb8e5aee49d8a8b1b85c82b0bdae425fa2a0264f75

    SHA512

    f2a6cb8498f596c7bf9178ea32a245dbb3657f43a179f378ce952ce5cb8580810cd67ef1efb623bcf6cd796d74e2c9b7bc42cb8665ead397546ce3b400181e83

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\c2d029be62759c1e0016130491c4961acb6895938b0d6df6d1086a407d36aa87.exe.log
    Filesize

    319B

    MD5

    824ba7b7eed8b900a98dd25129c4cd83

    SHA1

    54478770b2158000ef365591d42977cb854453a1

    SHA256

    d182dd648c92e41cd62dccc65f130c07f0a96c03b32f907c3d1218e9aa5bda03

    SHA512

    ae4f3a9673711ecb6cc5d06874c587341d5094803923b53b6e982278fa64549d7acf866de165e23750facd55da556b6794c0d32f129f4087529c73acd4ffb11e

  • 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\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\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

  • memory/1168-164-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/1168-152-0x0000000000000000-mapping.dmp
  • memory/1168-157-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/1684-163-0x0000000000000000-mapping.dmp
  • memory/2276-165-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/2276-136-0x0000000000000000-mapping.dmp
  • memory/2276-143-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/3248-133-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/3248-132-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/3248-146-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/3440-156-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/3440-149-0x0000000000000000-mapping.dmp
  • memory/3440-150-0x0000000000400000-0x000000000040E000-memory.dmp
    Filesize

    56KB

  • memory/3440-175-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/3548-142-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/3548-173-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/3548-134-0x0000000000000000-mapping.dmp
  • memory/3696-161-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/3696-162-0x00000000005D1000-0x00000000005D3000-memory.dmp
    Filesize

    8KB

  • memory/3696-159-0x0000000000000000-mapping.dmp
  • memory/3696-176-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/3696-177-0x00000000005D1000-0x00000000005D3000-memory.dmp
    Filesize

    8KB

  • memory/4340-166-0x0000000000000000-mapping.dmp
  • memory/4340-169-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/4796-170-0x0000000000000000-mapping.dmp
  • memory/4796-174-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/4796-178-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/4968-144-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB

  • memory/4968-137-0x0000000000000000-mapping.dmp
  • memory/4968-147-0x00000000753C0000-0x0000000075971000-memory.dmp
    Filesize

    5.7MB