Analysis

  • max time kernel
    146s
  • max time network
    93s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220331-en
  • submitted
    30-03-2022 04:00

General

  • Target

    211be1147cc8c04fa90c052f43d408463d193821e7fad1f225efc0fb6fad73d7.exe

  • Size

    612KB

  • MD5

    f414c142f690168170dc839b538fae62

  • SHA1

    f1695b6b8b52c13148d2bca87269b9d11479f2c5

  • SHA256

    211be1147cc8c04fa90c052f43d408463d193821e7fad1f225efc0fb6fad73d7

  • SHA512

    e7eb28451c72366c9d05421902ecccbc296c7173f2481b5c2a654fe967ffb6661ff23246cbe67698f788e9646a3880b3d29c1c7ed39ee7dc456c202f2e454e7c

Score
10/10

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

1

C2

127.0.0.1:6666

Attributes
reg_key
Windows Update
splitter
|Hassan|

Signatures 7

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE ⋅ 2 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 ⋅ 35 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 9 IoCs

Processes 4

  • C:\Users\Admin\AppData\Local\Temp\211be1147cc8c04fa90c052f43d408463d193821e7fad1f225efc0fb6fad73d7.exe
    "C:\Users\Admin\AppData\Local\Temp\211be1147cc8c04fa90c052f43d408463d193821e7fad1f225efc0fb6fad73d7.exe"
    Checks computer location settings
    Suspicious use of WriteProcessMemory
    PID:2560
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\start.bat" "
      Suspicious use of WriteProcessMemory
      PID:1380
      • C:\Server.sfx.exe
        Server.sfx -pSALkljltjlalljjljltylj745464yklsalskaLDKSALDLKa -dc:\
        Executes dropped EXE
        Checks computer location settings
        Suspicious use of WriteProcessMemory
        PID:4580
        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Server.exe
          "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Server.exe"
          Executes dropped EXE
          Suspicious behavior: GetForegroundWindowSpam
          Suspicious use of AdjustPrivilegeToken
          PID:4840

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

          Execution

            Exfiltration

              Impact

                Initial Access

                  Lateral Movement

                    Persistence

                      Privilege Escalation

                        Replay Monitor

                        00:00 00:00

                        Downloads

                        • C:\Server.sfx.exe
                          MD5

                          5603d3a3fc564364bc50f3e8c8ee0871

                          SHA1

                          48abcc70a6658890561cc408ca07f6503bc0307b

                          SHA256

                          da5fb964922d3ac61001835ec547b4d9ccbbd53cdaceccfe1d90a7cae9425943

                          SHA512

                          359140f49616c982d595f44408f8fed69e60a56a2d9054a9111498a596d9ccc94de952f2db015d7c6ba3df78d0b6d07ba6279e8948f33fa25a9651de74a81d3b

                        • C:\Server.sfx.exe
                          MD5

                          5603d3a3fc564364bc50f3e8c8ee0871

                          SHA1

                          48abcc70a6658890561cc408ca07f6503bc0307b

                          SHA256

                          da5fb964922d3ac61001835ec547b4d9ccbbd53cdaceccfe1d90a7cae9425943

                          SHA512

                          359140f49616c982d595f44408f8fed69e60a56a2d9054a9111498a596d9ccc94de952f2db015d7c6ba3df78d0b6d07ba6279e8948f33fa25a9651de74a81d3b

                        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Server.exe
                          MD5

                          accc929bf090d9f48afb7d4a2d3ff189

                          SHA1

                          4038c4542c1a80c1502df1ed733409c85a340325

                          SHA256

                          014ebb55b87556b9401a0ed07d1ddec7e14fd8e2d2b7a1392e1b8f4088599c64

                          SHA512

                          2e4b24f433fc6ae85735286921efe30c03440edca3ba53ec6dd3b251b072ff23bf0d6d783b104cafe09a61810215fbbb6c8ae636db6d910c6ee0084436cd10d0

                        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Server.exe
                          MD5

                          accc929bf090d9f48afb7d4a2d3ff189

                          SHA1

                          4038c4542c1a80c1502df1ed733409c85a340325

                          SHA256

                          014ebb55b87556b9401a0ed07d1ddec7e14fd8e2d2b7a1392e1b8f4088599c64

                          SHA512

                          2e4b24f433fc6ae85735286921efe30c03440edca3ba53ec6dd3b251b072ff23bf0d6d783b104cafe09a61810215fbbb6c8ae636db6d910c6ee0084436cd10d0

                        • C:\start.bat
                          MD5

                          02b93d7386a2aab2ebad3ab046ad135c

                          SHA1

                          5b9d035881267a963f5ea51c22f94ac508251e1c

                          SHA256

                          eed18e4fdbedd043805b3ceea7e4e07a86ee6ad4b31fc9ef58baa187a3d5b991

                          SHA512

                          fe803a41d9ef51c2cf2b3fbaef8e8fff48120ce09e92003690dfbb5bbd215aff39af5d4875d6637852a8344c244de9b29b51ce5487e4122a44636c560113bfa2

                        • memory/1380-124-0x0000000000000000-mapping.dmp
                        • memory/4580-126-0x0000000000000000-mapping.dmp
                        • memory/4840-129-0x0000000000000000-mapping.dmp
                        • memory/4840-132-0x0000000000F20000-0x0000000000F32000-memory.dmp
                        • memory/4840-133-0x0000000005890000-0x000000000592C000-memory.dmp
                        • memory/4840-134-0x00000000061D0000-0x0000000006774000-memory.dmp
                        • memory/4840-135-0x0000000005CC0000-0x0000000005D52000-memory.dmp
                        • memory/4840-136-0x0000000005CA0000-0x0000000005CAA000-memory.dmp