General

  • Target

    SecuriteInfo.com.W32.AIDetect.malware1.21112.25472

  • Size

    292KB

  • Sample

    210314-w612dbgk4s

  • MD5

    b6478e8e908b78bec9a56db8074d4449

  • SHA1

    9b0f9ab2c8f2877f232e5abb0aaee3cd027caf70

  • SHA256

    87e1e8b1fb643ea3665a8d6994bf5f7f9b48ce07218ef488d49f95142eac0eaa

  • SHA512

    4df0fa7418f503691514698dbcb1efd6bd54aa96de20ea07ed6b08f58974ce4bd0b5566e67b0c5017e41de894cded8f71ba83a324200f983f408ceb36cdc814d

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://funzel.info/upload/

http://doeros.xyz/upload/

http://vromus.com/upload/

http://hqans.com/upload/

http://vxeudy.com/upload/

http://poderoa.com/upload/

http://nezzzo.com/upload/

rc4.i32
rc4.i32

Targets

    • Target

      SecuriteInfo.com.W32.AIDetect.malware1.21112.25472

    • Size

      292KB

    • MD5

      b6478e8e908b78bec9a56db8074d4449

    • SHA1

      9b0f9ab2c8f2877f232e5abb0aaee3cd027caf70

    • SHA256

      87e1e8b1fb643ea3665a8d6994bf5f7f9b48ce07218ef488d49f95142eac0eaa

    • SHA512

      4df0fa7418f503691514698dbcb1efd6bd54aa96de20ea07ed6b08f58974ce4bd0b5566e67b0c5017e41de894cded8f71ba83a324200f983f408ceb36cdc814d

    • 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.

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

    • XMRig Miner Payload

    • Creates new service(s)

    • 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.

    • Deletes itself

    • Loads dropped DLL

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of web browsers

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

    • themida

      Detects Themida, 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

    • Looks up external IP address via web service

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

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Tasks