Overview

overview

10

Static

static

8

a803a2f303...a6.exe

windows7_x64

10

a803a2f303...a6.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    29-12-2020 07:44

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General

  • Target

    a803a2f303972e595f62c4f94fdab9a6.exe

  • Size

    154KB

  • MD5

    a803a2f303972e595f62c4f94fdab9a6

  • SHA1

    0b880a5a3bd054a2bf25e1b07c6e50aeeacd261d

  • SHA256

    448c9cc1d7ec2eeae433ea0f955802adfbb6d97546c99855812c11942021776e

  • SHA512

    6166e53c3c55e77d18d0f6688ebf1b24daacd569a3766ada94bbc873915429c340d6acb4462f2eda21d891e1014184a7c2d1396cbb441bc1261afd3aa3116211

Score
10/10
smokeloaderbackdoortrojanupx

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.

    trojanbackdoorsmokeloader
  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Program crash 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 2651 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a803a2f303972e595f62c4f94fdab9a6.exe
    "C:\Users\Admin\AppData\Local\Temp\a803a2f303972e595f62c4f94fdab9a6.exe"
    1⤵
    • Loads dropped DLL
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4644
  • C:\Users\Admin\AppData\Roaming\gwsdjvf
    C:\Users\Admin\AppData\Roaming\gwsdjvf
    1⤵
    • Executes dropped EXE
    PID:4176
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4176 -s 488
      2⤵
      • Suspicious use of NtCreateProcessExOtherParentProcess
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:1764

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

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

    50741b3f2d7debf5d2bed63d88404029

    SHA1

    56210388a627b926162b36967045be06ffb1aad3

    SHA256

    f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c

    SHA512

    fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3

    Download Submit
  • C:\Users\Admin\AppData\Roaming\gwsdjvf
    MD5

    a803a2f303972e595f62c4f94fdab9a6

    SHA1

    0b880a5a3bd054a2bf25e1b07c6e50aeeacd261d

    SHA256

    448c9cc1d7ec2eeae433ea0f955802adfbb6d97546c99855812c11942021776e

    SHA512

    6166e53c3c55e77d18d0f6688ebf1b24daacd569a3766ada94bbc873915429c340d6acb4462f2eda21d891e1014184a7c2d1396cbb441bc1261afd3aa3116211

    Download Submit
  • C:\Users\Admin\AppData\Roaming\gwsdjvf
    MD5

    a803a2f303972e595f62c4f94fdab9a6

    SHA1

    0b880a5a3bd054a2bf25e1b07c6e50aeeacd261d

    SHA256

    448c9cc1d7ec2eeae433ea0f955802adfbb6d97546c99855812c11942021776e

    SHA512

    6166e53c3c55e77d18d0f6688ebf1b24daacd569a3766ada94bbc873915429c340d6acb4462f2eda21d891e1014184a7c2d1396cbb441bc1261afd3aa3116211

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

    50741b3f2d7debf5d2bed63d88404029

    SHA1

    56210388a627b926162b36967045be06ffb1aad3

    SHA256

    f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c

    SHA512

    fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3

    Download Submit
  • memory/1764-11-0x0000000004760000-0x0000000004761000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1764-12-0x0000000004760000-0x0000000004761000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3108-5-0x0000000001300000-0x0000000001316000-memory.dmp
    Filesize

    88KB

    Download
  • memory/4176-8-0x0000000004F86000-0x0000000004F87000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4176-9-0x00000000053C0000-0x00000000053C1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4644-2-0x0000000005166000-0x0000000005167000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4644-3-0x00000000053E0000-0x00000000053E1000-memory.dmp
    Filesize

    4KB

    Download