a4d932b3e26cfcd75ca8f634104529edb514bcfbd1e60f80053e89dcfdb3519f

General
Target

a4d932b3e26cfcd75ca8f634104529edb514bcfbd1e60f80053e89dcfdb3519f

Size

318KB

Sample

220115-b4a94scbgl

Score
10 /10
MD5

b5b0b211db2cc4d5aafa0b369c651706

SHA1

b45da76bd8c44d06829442e80733f6ecfdd81ec2

SHA256

a4d932b3e26cfcd75ca8f634104529edb514bcfbd1e60f80053e89dcfdb3519f

SHA512

b890dc08c802990912f88119623832367bd0a1920eab6ba3a841e3ecdb5ea3f875c730738d21b09fe1fb0b04d5efb6a101863b53747493f2e46deab3a329d50d

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

a4d932b3e26cfcd75ca8f634104529edb514bcfbd1e60f80053e89dcfdb3519f

MD5

b5b0b211db2cc4d5aafa0b369c651706

Filesize

318KB

Score
10/10
SHA1

b45da76bd8c44d06829442e80733f6ecfdd81ec2

SHA256

a4d932b3e26cfcd75ca8f634104529edb514bcfbd1e60f80053e89dcfdb3519f

SHA512

b890dc08c802990912f88119623832367bd0a1920eab6ba3a841e3ecdb5ea3f875c730738d21b09fe1fb0b04d5efb6a101863b53747493f2e46deab3a329d50d

Tags

Signatures

  • Arkei

    Description

    Arkei is an infostealer written in C++.

    Tags

  • SmokeLoader

    Description

    Modular backdoor trojan in use since 2014.

    Tags

  • Suspicious use of NtCreateProcessExOtherParentProcess

  • Tofsee

    Description

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

    Tags

  • Windows security bypass

    Tags

    TTPs

    Disabling Security ToolsModify Registry
  • suricata: ET MALWARE Possible Dridex Download URI Struct with no referer

    Description

    suricata: ET MALWARE Possible Dridex Download URI Struct with no referer

    Tags

  • suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

    Description

    suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

    Tags

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

    Description

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

    Tags

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    Description

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    Tags

  • suricata: ET MALWARE Win32/Vidar Variant Stealer CnC Exfil

    Description

    suricata: ET MALWARE Win32/Vidar Variant Stealer CnC Exfil

    Tags

  • xmrig

    Description

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

    Tags

  • .NET Reactor proctector

    Description

    Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

  • Arkei Stealer Payload

    Tags

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

    Tags

    TTPs

    Query RegistryVirtualization/Sandbox Evasion
  • XMRig Miner Payload

    Tags

  • Creates new service(s)

    Tags

    TTPs

    New Service
  • Downloads MZ/PE file

  • Executes dropped EXE

  • Modifies Windows Firewall

    Tags

    TTPs

    Modify Existing Service
  • Sets service image path in registry

    Tags

    TTPs

    Registry Run Keys / Startup FolderModify Registry
  • Checks BIOS information in registry

    Description

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

    TTPs

    Query RegistrySystem Information Discovery
  • Deletes itself

  • Loads dropped DLL

  • Reads user/profile data of web browsers

    Description

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

    Tags

    TTPs

    Data from Local SystemCredentials in Files
  • Accesses Microsoft Outlook profiles

    Tags

    TTPs

    Email Collection
  • Accesses cryptocurrency files/wallets, possible credential harvesting

    Tags

    TTPs

    Data from Local SystemCredentials in Files
  • Checks installed software on the system

    Description

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

    Tags

    TTPs

    Query Registry
  • Checks whether UAC is enabled

    Tags

    TTPs

    System Information Discovery
  • Legitimate hosting services abused for malware hosting/C2

    TTPs

    Web Service
  • Looks up external IP address via web service

    Description

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  • Suspicious use of SetThreadContext

Related Tasks

MITRE ATT&CK Matrix