Resubmissions

01-11-2020 15:20

201101-6gnva6fyd2 10

01-11-2020 15:16

201101-dvbselbzxx 10

Analysis

  • max time kernel
    77s
  • max time network
    136s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    01-11-2020 15:16

General

  • Target

    2020-11-01_21-26-29.bin.exe

  • Size

    234KB

  • MD5

    dd22d3a34781601ebbe3020b7cd33356

  • SHA1

    567dd97232f0cf9ecec13f82ff894d9c9ee0d013

  • SHA256

    33fe9bbda8cc1dbaa70e85a203fb6a0ec2a82ce2edb0c5ac585be620e8b8a1b0

  • SHA512

    c6c4d353a76b1a0c35791c58935ec426d3d67c2133cffb5332c5ab71c5424f5ba1acf398fd210285676f5b838646192791f67a8edceddfa7e4b0722cbef39316

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://etasuklavish.today/

http://mragyzmachnobesdi.today/

http://kimchinikuzims.today/

http://slacvostinrius.today/

http://straponuliusyn.today/

http://grammmdinss.today/

http://viprasputinsd.chimkent.su/

http://lupadypa.dagestan.su/

http://stoknolimchin.exnet.su/

http://musaroprovadnikov.live/

http://teemforyourexprensiti.life/

http://stolkgolmishutich.termez.su/

http://roompampamgandish.wtf/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Executes dropped EXE ⋅ 1 IoCs
  • 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 ⋅ 1256 IoCs
  • Suspicious behavior: MapViewOfSection ⋅ 1 IoCs
  • Suspicious use of UnmapMainImage ⋅ 1 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2020-11-01_21-26-29.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\2020-11-01_21-26-29.bin.exe"
    Loads dropped DLL
    Checks SCSI registry key(s)
    Suspicious behavior: EnumeratesProcesses
    Suspicious behavior: MapViewOfSection
    PID:492
  • C:\Users\Admin\AppData\Local\Temp\C4CC.tmp.exe
    C:\Users\Admin\AppData\Local\Temp\C4CC.tmp.exe
    Executes dropped EXE
    PID:2012

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

          Execution

            Exfiltration

              Impact

                Initial Access

                  Lateral Movement

                    Persistence

                      Privilege Escalation

                        Replay Monitor

                        00:00 00:00

                        Downloads

                        • C:\Users\Admin\AppData\Local\Temp\C4CC.tmp.exe
                          MD5

                          379a349d07c3868fdaadc8e3ec12b599

                          SHA1

                          8d2baed856232fc0f52a3ba30109aeac50034ed7

                          SHA256

                          1546dcf0f1d4721adc53ddeb7b66dbe800f21050621972afb975577f49e7bff4

                          SHA512

                          954840bfbb391e6f7f3f672a723b335124c73eb93fe4cf738866175bfd6e5167e3206a6cb5a0039a1ccca9e6a2519b3e1eb761dcc85ffccf6e20864e6385159a

                        • C:\Users\Admin\AppData\Local\Temp\C4CC.tmp.exe
                          MD5

                          379a349d07c3868fdaadc8e3ec12b599

                          SHA1

                          8d2baed856232fc0f52a3ba30109aeac50034ed7

                          SHA256

                          1546dcf0f1d4721adc53ddeb7b66dbe800f21050621972afb975577f49e7bff4

                          SHA512

                          954840bfbb391e6f7f3f672a723b335124c73eb93fe4cf738866175bfd6e5167e3206a6cb5a0039a1ccca9e6a2519b3e1eb761dcc85ffccf6e20864e6385159a

                        • \Users\Admin\AppData\Local\Temp\2F6.tmp
                          MD5

                          50741b3f2d7debf5d2bed63d88404029

                          SHA1

                          56210388a627b926162b36967045be06ffb1aad3

                          SHA256

                          f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c

                          SHA512

                          fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3

                        • memory/492-0-0x00000000025B4000-0x00000000025B5000-memory.dmp
                        • memory/492-1-0x0000000004080000-0x0000000004081000-memory.dmp
                        • memory/2012-4-0x0000000000000000-mapping.dmp
                        • memory/2012-7-0x0000000002404000-0x0000000002405000-memory.dmp
                        • memory/2012-8-0x0000000004020000-0x0000000004021000-memory.dmp
                        • memory/3016-3-0x0000000000E30000-0x0000000000E46000-memory.dmp