Resubmissions

26-04-2024 19:08

240426-xtafqaab73 10

25-04-2024 12:49

240425-p2pavaah66 10

24-04-2024 19:16

240424-xyt1xsfg57 10

General

  • Target

    3460da28a0587dedb4be574e4b26f25c807d42816562e2abdf61a34c1ac68b37

  • Size

    263KB

  • Sample

    240426-xtafqaab73

  • MD5

    f572d2cf74a7897bebb459dc08a45411

  • SHA1

    9a6bc0b9670cf1e5ea21876c1a71bafdec32017f

  • SHA256

    3460da28a0587dedb4be574e4b26f25c807d42816562e2abdf61a34c1ac68b37

  • SHA512

    d75df9d31d36776841854c3708727219380cd8731d0669fd18be634047b7526299bd5e5fa561385e7dce458edee417f08ed779b3a590dc9a71450f6ef3557a33

  • SSDEEP

    3072:Y2e/zGhApVVIbW+UHPiXQGDL5mc4IRKU1uhIrueTi21TE7idvqjfyJ+dELqPtPe:OzCbWeQmLomRTVxT4O87dEL4t

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2022

C2

http://trad-einmyus.com/index.php

http://tradein-myus.com/index.php

http://trade-inmyus.com/index.php

rc4.i32
rc4.i32

Targets

    • Target

      3460da28a0587dedb4be574e4b26f25c807d42816562e2abdf61a34c1ac68b37

    • Size

      263KB

    • MD5

      f572d2cf74a7897bebb459dc08a45411

    • SHA1

      9a6bc0b9670cf1e5ea21876c1a71bafdec32017f

    • SHA256

      3460da28a0587dedb4be574e4b26f25c807d42816562e2abdf61a34c1ac68b37

    • SHA512

      d75df9d31d36776841854c3708727219380cd8731d0669fd18be634047b7526299bd5e5fa561385e7dce458edee417f08ed779b3a590dc9a71450f6ef3557a33

    • SSDEEP

      3072:Y2e/zGhApVVIbW+UHPiXQGDL5mc4IRKU1uhIrueTi21TE7idvqjfyJ+dELqPtPe:OzCbWeQmLomRTVxT4O87dEL4t

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Manipulates Digital Signatures

      Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.

    • Sets service image path in registry

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Registers COM server for autorun

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Defense Evasion

Subvert Trust Controls

2
T1553

SIP and Trust Provider Hijacking

1
T1553.003

Install Root Certificate

1
T1553.004

Modify Registry

4
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Software Discovery

1
T1518

Security Software Discovery

1
T1518.001

Query Registry

5
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks