Analysis

  • max time kernel
    151s
  • max time network
    125s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    14-10-2021 05:36

General

  • Target

    a42ab3b5e85fea811bdbc04406e1d96e7752da8a712887b694f89f2a2a9ddd2e.exe

  • Size

    215KB

  • MD5

    39f5e1067869ba2b940eebcfa9bdffdf

  • SHA1

    a456e2d7fee50a0f2b26626ffdd41a36d8232327

  • SHA256

    a42ab3b5e85fea811bdbc04406e1d96e7752da8a712887b694f89f2a2a9ddd2e

  • SHA512

    b791c409051a71588135d75e36bb55c254a50b4b2a6ea24400d1cd45ffef565ee5e7c36e7aab8b02bd971b5b51f13ded17518ddf4601bed43a02179a858431ff

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://honawey7.xyz/

http://wijibui0.xyz/

http://hefahei6.xyz/

http://pipevai4.xyz/

http://nalirou7.xyz/

http://xacokuo8.xyz/

http://hajezey1.xyz/

http://gejajoo7.xyz/

http://sysaheu9.xyz/

http://rixoxeu9.xyz/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 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 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a42ab3b5e85fea811bdbc04406e1d96e7752da8a712887b694f89f2a2a9ddd2e.exe
    "C:\Users\Admin\AppData\Local\Temp\a42ab3b5e85fea811bdbc04406e1d96e7752da8a712887b694f89f2a2a9ddd2e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2056
    • C:\Users\Admin\AppData\Local\Temp\a42ab3b5e85fea811bdbc04406e1d96e7752da8a712887b694f89f2a2a9ddd2e.exe
      "C:\Users\Admin\AppData\Local\Temp\a42ab3b5e85fea811bdbc04406e1d96e7752da8a712887b694f89f2a2a9ddd2e.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:3616

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/2056-118-0x0000000000030000-0x0000000000039000-memory.dmp
    Filesize

    36KB

  • memory/2872-119-0x0000000001220000-0x0000000001236000-memory.dmp
    Filesize

    88KB

  • memory/3616-116-0x0000000000400000-0x0000000000409000-memory.dmp
    Filesize

    36KB

  • memory/3616-117-0x0000000000402E8F-mapping.dmp