Analysis

  • max time kernel
    91s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    25-06-2022 06:29

General

  • Target

    3a2be084c6db0aae7d5a336cb3025683f5225f3fd03a30b8668e0bd73bec5af1.exe

  • Size

    169KB

  • MD5

    3dac04278ac8e51ca2e2541bd6999cfc

  • SHA1

    499cf2fddfd88d8c664fa79888c8a306f7593c72

  • SHA256

    3a2be084c6db0aae7d5a336cb3025683f5225f3fd03a30b8668e0bd73bec5af1

  • SHA512

    08676c22de3a738555d9d418ec2837f9d88b9d20e1671161b5352597672516997420dea09c290b085242debeb165c9ffe022004aab5ac720f817ca349702c652

Malware Config

Extracted

Family

smokeloader

Version

2018

C2

http://proxy-exe.bit/2/

http://kiyanka.club/2/

http://d3s1.me/2/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3a2be084c6db0aae7d5a336cb3025683f5225f3fd03a30b8668e0bd73bec5af1.exe
    "C:\Users\Admin\AppData\Local\Temp\3a2be084c6db0aae7d5a336cb3025683f5225f3fd03a30b8668e0bd73bec5af1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4132
    • C:\Users\Admin\AppData\Local\Temp\3a2be084c6db0aae7d5a336cb3025683f5225f3fd03a30b8668e0bd73bec5af1.exe
      "C:\Users\Admin\AppData\Local\Temp\3a2be084c6db0aae7d5a336cb3025683f5225f3fd03a30b8668e0bd73bec5af1.exe"
      2⤵
      • Maps connected drives based on registry
      • Suspicious behavior: MapViewOfSection
      PID:1772

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

  • memory/1772-131-0x0000000000000000-mapping.dmp
  • memory/1772-132-0x0000000000400000-0x0000000000409000-memory.dmp
    Filesize

    36KB

  • memory/1772-135-0x0000000000400000-0x0000000000409000-memory.dmp
    Filesize

    36KB

  • memory/2724-134-0x0000000001440000-0x0000000001455000-memory.dmp
    Filesize

    84KB

  • memory/4132-130-0x00000000005E5000-0x00000000005EF000-memory.dmp
    Filesize

    40KB

  • memory/4132-133-0x00000000005D8000-0x00000000005E6000-memory.dmp
    Filesize

    56KB