Resubmissions

10-11-2020 12:55

201110-tjrd82d9ee 10

07-11-2020 10:12

201107-lxpdbv9h4n 10

Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    07-11-2020 10:12

General

  • Target

    04psi.exe

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://rexstat35xm.xyz/statweb577/

http://dexspot2cx.club/statweb577/

http://atxspot20cx.best/statweb577/

http://rexspot7xm.xyz/statweb577/

http://datasectex.com/statweb577/

http://servicem977xm.xyz/statweb577/

http://advertxman7cx.xyz/statweb577/

http://starxpush7xm.xyz/statweb577/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • 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: EnumeratesProcesses 620 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\04psi.exe
    "C:\Users\Admin\AppData\Local\Temp\04psi.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:744
    • C:\Users\Admin\AppData\Local\Temp\04psi.exe
      "C:\Users\Admin\AppData\Local\Temp\04psi.exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1768

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\D47F.tmp
    MD5

    d124f55b9393c976963407dff51ffa79

    SHA1

    2c7bbedd79791bfb866898c85b504186db610b5d

    SHA256

    ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

    SHA512

    278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

  • memory/744-0-0x0000000001DA0000-0x0000000001DB1000-memory.dmp
    Filesize

    68KB

  • memory/1256-5-0x0000000002A50000-0x0000000002A66000-memory.dmp
    Filesize

    88KB

  • memory/1768-2-0x0000000000400000-0x000000000040A000-memory.dmp
    Filesize

    40KB

  • memory/1768-3-0x0000000000402DBC-mapping.dmp