Analysis

  • max time kernel
    146s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-08-2022 14:12

General

  • Target

    2944260deaa025272074f9a2ac84ffd7.exe

  • Size

    347KB

  • MD5

    2944260deaa025272074f9a2ac84ffd7

  • SHA1

    18aa80fcd4efade56a68ce67a38f8e148d38e863

  • SHA256

    76de9acdc679b628b2982e417d9b9d3329841439f9ccfb70e4e11e162ec1eb68

  • SHA512

    84e15d0cef4d0a34fecb7238aa3e02c2ecd19e0e5beb1474d6c8cb74b40eaae3e097455b2e2a71a6ae02113192a67f52149231313a9e992a9c13c4da22366653

  • SSDEEP

    6144:SiDdgU7fEMhpd2cBcr39lIKdK8RKzd+jAYLToFYAah+eCH5+Hn0Su34KB:1fEWpdPKrNlIKdK8RKwOXo+J4H0SQ

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

FRANSESCOC50Y3AuZXUubmdyb2suaW8Strik:MTU4OTA=

Mutex

0ec537396f8c89c665c6c857f7fa4b8a

Attributes
  • reg_key

    0ec537396f8c89c665c6c857f7fa4b8a

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs 3 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2944260deaa025272074f9a2ac84ffd7.exe
    "C:\Users\Admin\AppData\Local\Temp\2944260deaa025272074f9a2ac84ffd7.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4644
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Server.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Server.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:316
      • C:\Users\Admin\AppData\Local\Temp\server.exe
        "C:\Users\Admin\AppData\Local\Temp\server.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4460
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          PID:804
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
          4⤵
          • Modifies Windows Firewall
          PID:3092
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          PID:4052

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

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\server.exe.log
    Filesize

    408B

    MD5

    661cab77d3b907e8057f2e689e995af3

    SHA1

    5d1a0ee9c5ee7a7a90d56d00c10dc0e679bee01c

    SHA256

    8f27f95ad7c09f2e05d7960e78ef8cd935c1262e9657883a75d70dcb877592d2

    SHA512

    2523b316bd79fed0e9b3d73f46959f3dfe270cf950f34bd9d49fe4113a2ae46d0cd00224d848bc40c0d8c55449e2dccc4b4278ba4809c0ca9ede1ac75673fc67

  • C:\Users\Admin\AppData\Local\Temp\server.exe
    Filesize

    93KB

    MD5

    6633e4a02ef0a596391274133458fe08

    SHA1

    194b28b1494dd31941e2404094034a55062fdc86

    SHA256

    af57cecf462d2f8321a842aca1566a9629d2315958a7a0252ca8c8e7e0e993d7

    SHA512

    449e6ae83ce6d82be9b9e90c3fd07ac358c4cb8f3d8fc273057de7caa59cf51bbdb55b03cf063c5651cf8d23354cd3d178830ad580301c2764bec7c0b21842ba

  • C:\Users\Admin\AppData\Local\Temp\server.exe
    Filesize

    93KB

    MD5

    6633e4a02ef0a596391274133458fe08

    SHA1

    194b28b1494dd31941e2404094034a55062fdc86

    SHA256

    af57cecf462d2f8321a842aca1566a9629d2315958a7a0252ca8c8e7e0e993d7

    SHA512

    449e6ae83ce6d82be9b9e90c3fd07ac358c4cb8f3d8fc273057de7caa59cf51bbdb55b03cf063c5651cf8d23354cd3d178830ad580301c2764bec7c0b21842ba

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Server.exe
    Filesize

    93KB

    MD5

    6633e4a02ef0a596391274133458fe08

    SHA1

    194b28b1494dd31941e2404094034a55062fdc86

    SHA256

    af57cecf462d2f8321a842aca1566a9629d2315958a7a0252ca8c8e7e0e993d7

    SHA512

    449e6ae83ce6d82be9b9e90c3fd07ac358c4cb8f3d8fc273057de7caa59cf51bbdb55b03cf063c5651cf8d23354cd3d178830ad580301c2764bec7c0b21842ba

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Server.exe
    Filesize

    93KB

    MD5

    6633e4a02ef0a596391274133458fe08

    SHA1

    194b28b1494dd31941e2404094034a55062fdc86

    SHA256

    af57cecf462d2f8321a842aca1566a9629d2315958a7a0252ca8c8e7e0e993d7

    SHA512

    449e6ae83ce6d82be9b9e90c3fd07ac358c4cb8f3d8fc273057de7caa59cf51bbdb55b03cf063c5651cf8d23354cd3d178830ad580301c2764bec7c0b21842ba

  • C:\Users\Admin\AppData\Roaming\app
    Filesize

    5B

    MD5

    b66e20886f9675fe4dbf430ea2d0bf8d

    SHA1

    2e676da72201e6e4482e00b300511900c6aee5a0

    SHA256

    899a421c56c18058cbdd16dd7fb313a57d36c1189ca0f442070ed01d17241414

    SHA512

    f431616522f775de27ccde420f0de6f8b3477fbe97cfd8001864b8289a570916a6dd32c84fcf8af6083d8c1b47c61aa5c73ed1e7cc75213d3f24bd94a93cb870

  • memory/316-133-0x0000000000000000-mapping.dmp
  • memory/316-147-0x0000000074EC0000-0x0000000075471000-memory.dmp
    Filesize

    5.7MB

  • memory/316-137-0x0000000074EC0000-0x0000000075471000-memory.dmp
    Filesize

    5.7MB

  • memory/804-144-0x0000000000000000-mapping.dmp
  • memory/3092-145-0x0000000000000000-mapping.dmp
  • memory/4052-146-0x0000000000000000-mapping.dmp
  • memory/4460-138-0x0000000000000000-mapping.dmp
  • memory/4460-143-0x0000000074EC0000-0x0000000075471000-memory.dmp
    Filesize

    5.7MB

  • memory/4460-148-0x0000000074EC0000-0x0000000075471000-memory.dmp
    Filesize

    5.7MB

  • memory/4644-132-0x0000000074EC0000-0x0000000075471000-memory.dmp
    Filesize

    5.7MB

  • memory/4644-136-0x0000000074EC0000-0x0000000075471000-memory.dmp
    Filesize

    5.7MB