General

  • Target

    0de870e0a86c36c3bd0d59818a7c6177e28efd3097cbfae8e7a994bee8920de4

  • Size

    311KB

  • Sample

    220115-jtkpssdfgj

  • MD5

    0a7c6475d82376bf88465f3f875700b0

  • SHA1

    52b6d65c75065a0876911aeaf0bece9423418a6c

  • SHA256

    0de870e0a86c36c3bd0d59818a7c6177e28efd3097cbfae8e7a994bee8920de4

  • SHA512

    a244619b6b2d7bf16665c3c6e2ad2df0a382fef0f756d98aa983a876fbb36b97fcd7a923bbfe3656831222c32dbea9564bf1f46bb0d6e06e84a5315c62a65984

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://host-data-coin-11.com/

http://file-coin-host-12.com/

http://srtuiyhuali.at/

http://fufuiloirtu.com/

http://amogohuigotuli.at/

http://novohudosovu.com/

http://brutuilionust.com/

http://bubushkalioua.com/

http://dumuilistrati.at/

http://verboliatsiaeeees.com/

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family

arkei

Botnet

Default

C2

http://file-file-host4.com/tratata.php

Extracted

Family

tofsee

C2

patmushta.info

parubey.info

Targets

    • Target

      0de870e0a86c36c3bd0d59818a7c6177e28efd3097cbfae8e7a994bee8920de4

    • Size

      311KB

    • MD5

      0a7c6475d82376bf88465f3f875700b0

    • SHA1

      52b6d65c75065a0876911aeaf0bece9423418a6c

    • SHA256

      0de870e0a86c36c3bd0d59818a7c6177e28efd3097cbfae8e7a994bee8920de4

    • SHA512

      a244619b6b2d7bf16665c3c6e2ad2df0a382fef0f756d98aa983a876fbb36b97fcd7a923bbfe3656831222c32dbea9564bf1f46bb0d6e06e84a5315c62a65984

    • Arkei

      Arkei is an infostealer written in C++.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

      suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Arkei Stealer Payload

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • XMRig Miner Payload

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks BIOS information in registry

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

New Service

1
T1050

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

7
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Tasks