General

  • Target

    0c3fa3ef116ff01f73225f81fdc7785a37cb2fab7bd001fe626fa980b4bcd843

  • Size

    331KB

  • Sample

    211225-v39aasagc3

  • MD5

    2539086e821fb7bc382bfe90aa24139e

  • SHA1

    e713d51b90558569b78475309c567f4e8cb056b7

  • SHA256

    0c3fa3ef116ff01f73225f81fdc7785a37cb2fab7bd001fe626fa980b4bcd843

  • SHA512

    c28dd26ec9b79248c9488f3497ebc5ddee9cc817600cf661613c93971dbf5939878ed99d39da483eccc59373bf4e7ba9d94db6be7af731fffccbf77b5fe5541d

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

tofsee

C2

parubey.info

patmushta.info

Extracted

Family

redline

Botnet

1

C2

86.107.197.138:38133

Extracted

Family

redline

Botnet

@cas

C2

87.249.53.87:63820

Targets

    • Target

      0c3fa3ef116ff01f73225f81fdc7785a37cb2fab7bd001fe626fa980b4bcd843

    • Size

      331KB

    • MD5

      2539086e821fb7bc382bfe90aa24139e

    • SHA1

      e713d51b90558569b78475309c567f4e8cb056b7

    • SHA256

      0c3fa3ef116ff01f73225f81fdc7785a37cb2fab7bd001fe626fa980b4bcd843

    • SHA512

      c28dd26ec9b79248c9488f3497ebc5ddee9cc817600cf661613c93971dbf5939878ed99d39da483eccc59373bf4e7ba9d94db6be7af731fffccbf77b5fe5541d

    • Arkei

      Arkei is an infostealer written in C++.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine Payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Tofsee

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

    • Windows security bypass

    • 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 Installed Components in the registry

    • 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.

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • 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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • 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

Registry Run Keys / Startup Folder

2
T1060

Modify Existing Service

1
T1031

Scheduled Task

1
T1053

Privilege Escalation

New Service

1
T1050

Scheduled Task

1
T1053

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

4
T1112

Virtualization/Sandbox Evasion

1
T1497

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

2
T1120

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Tasks