Analysis

  • max time kernel
    151s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    29-12-2020 19:50

General

  • Target

    35f735c94eb255488a1109e23db5b83e.exe

  • Size

    136KB

  • MD5

    35f735c94eb255488a1109e23db5b83e

  • SHA1

    a6ab1cbe6891f5523c2b0cd19302a5fd0209cca8

  • SHA256

    597c1dff871d2d2391f1b73583d4f14fb384198b7d16d107925523ca44cdd8d2

  • SHA512

    bde7f7954d17329275063fc3afd3ab77a60bc9db51172f215c1b0790981baa9c156364b2d737d20f1fafe43846bab8acf0300fd1293b9e8eb860719f298eb38c

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://vtdilet.com/upload/

http://netvxi.com/upload/

http://tinnys.monster/upload/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 773 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\35f735c94eb255488a1109e23db5b83e.exe
    "C:\Users\Admin\AppData\Local\Temp\35f735c94eb255488a1109e23db5b83e.exe"
    1⤵
    • Loads dropped DLL
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:384

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\CC4F.tmp
    MD5

    d124f55b9393c976963407dff51ffa79

    SHA1

    2c7bbedd79791bfb866898c85b504186db610b5d

    SHA256

    ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

    SHA512

    278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

  • memory/384-3-0x0000000004E00000-0x0000000004E11000-memory.dmp
    Filesize

    68KB

  • memory/1200-5-0x0000000002170000-0x0000000002186000-memory.dmp
    Filesize

    88KB