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Analysis

  • max time kernel
    126s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    19-01-2021 19:24

General

  • Target

    2019-09-02_22-41-10.exe

  • Size

    251KB

  • MD5

    924aa6c26f6f43e0893a40728eac3b32

  • SHA1

    baa9b4c895b09d315ed747b3bd087f4583aa84fc

  • SHA256

    30f9db1f5838abb6c1580fdfb7f5dcfd7c2ac8cfac50c2edd0c8415d66212c95

  • SHA512

    3cb6fd659aff46eaa62b0e647ccebeecb070ba0bb27e1cc037b33caf23c417e75f476e1c08e1b5f3b232c4640995ae5afa43bfd09252d318fe5eec0d18de830a

Malware Config

Extracted

Family

smokeloader

Version

2019

C2

http://advertserv25.world/logstatx77/

http://mailstatm74.club/logstatx77/

http://kxservx7zx.club/logstatx77/

http://dsmail977sx.xyz/logstatx77/

http://fdmail709.club/logstatx77/

http://servicestar751.club/logstatx77/

http://staradvert9075.club/logstatx77/

http://staradvert1883.club/logstatx77/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2019-09-02_22-41-10.exe
    "C:\Users\Admin\AppData\Local\Temp\2019-09-02_22-41-10.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1812
    • C:\Users\Admin\AppData\Local\Temp\2019-09-02_22-41-10.exe
      "C:\Users\Admin\AppData\Local\Temp\2019-09-02_22-41-10.exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2044

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\D47F.tmp

    MD5

    d124f55b9393c976963407dff51ffa79

    SHA1

    2c7bbedd79791bfb866898c85b504186db610b5d

    SHA256

    ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

    SHA512

    278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

  • memory/1232-9-0x0000000002200000-0x0000000002201000-memory.dmp

    Filesize

    4KB

  • memory/1232-10-0x00000000021D0000-0x00000000021E6000-memory.dmp

    Filesize

    88KB

  • memory/1812-2-0x0000000000E40000-0x0000000000E51000-memory.dmp

    Filesize

    68KB

  • memory/1812-6-0x0000000000020000-0x000000000002B000-memory.dmp

    Filesize

    44KB

  • memory/2044-3-0x0000000000400000-0x000000000040A000-memory.dmp

    Filesize

    40KB

  • memory/2044-4-0x0000000000402CED-mapping.dmp

  • memory/2044-5-0x0000000075781000-0x0000000075783000-memory.dmp

    Filesize

    8KB