General

  • Target

    da3e054d0a6eeb13330a4220895a30a7b3e39a496e6f3b5d5f8a38752cd46c8f

  • Size

    165KB

  • Sample

    210828-l5mmth3faa

  • MD5

    1a4f8842b9e287fbbf803072523e4d2c

  • SHA1

    748aaae076ce9331b38ed9c30e7bfff4e924215c

  • SHA256

    da3e054d0a6eeb13330a4220895a30a7b3e39a496e6f3b5d5f8a38752cd46c8f

  • SHA512

    b7972c1d25d135e0a7ce22c8dd3babda63fe5416afab4396679ff236db4c6964a513596cf086fe2a6025161f265afe8ab3c8bac3d3dc173d20c298d7ffe3bdbe

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://aucmoney.com/upload/

http://thegymmum.com/upload/

http://atvcampingtrips.com/upload/

http://kuapakualaman.com/upload/

http://renatazarazua.com/upload/

http://nasufmutlu.com/upload/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

hello

C2

80.66.87.33:36976

Targets

    • Target

      da3e054d0a6eeb13330a4220895a30a7b3e39a496e6f3b5d5f8a38752cd46c8f

    • Size

      165KB

    • MD5

      1a4f8842b9e287fbbf803072523e4d2c

    • SHA1

      748aaae076ce9331b38ed9c30e7bfff4e924215c

    • SHA256

      da3e054d0a6eeb13330a4220895a30a7b3e39a496e6f3b5d5f8a38752cd46c8f

    • SHA512

      b7972c1d25d135e0a7ce22c8dd3babda63fe5416afab4396679ff236db4c6964a513596cf086fe2a6025161f265afe8ab3c8bac3d3dc173d20c298d7ffe3bdbe

    • 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.

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

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks BIOS information in registry

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

    • Deletes itself

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Tasks