General

  • Target

    file.exe

  • Size

    607KB

  • Sample

    231017-y1j46saa88

  • MD5

    27121df06efbeded912d9bded3279f67

  • SHA1

    bcf41ecaccd1a8540dfabe9d9442972dbfa5970b

  • SHA256

    b6916e92bc3a01c59eb34f0ec8e53b20948cd4dc26e84d06ae35f3ee2fa7cdda

  • SHA512

    b63f2f8a9bd83e379eaccdc3780977d98b876e540b5465852811d49429d7d46e04cd5eca3d56e94f752f945196709e82c1cba8f106a87c4f4d35a311e7788731

  • SSDEEP

    12288:JcrNS33L10QdrXZT+tcWnvlOAYnPQY5WEtuWcy1MERYs:0NA3R5drX/WvwpnPQY0x9uME6s

Malware Config

Extracted

Family

redline

Botnet

installs

C2

91.103.253.6:22884

Extracted

Family

redline

Botnet

123

C2

51.254.67.186:16176

Targets

    • Target

      file.exe

    • Size

      607KB

    • MD5

      27121df06efbeded912d9bded3279f67

    • SHA1

      bcf41ecaccd1a8540dfabe9d9442972dbfa5970b

    • SHA256

      b6916e92bc3a01c59eb34f0ec8e53b20948cd4dc26e84d06ae35f3ee2fa7cdda

    • SHA512

      b63f2f8a9bd83e379eaccdc3780977d98b876e540b5465852811d49429d7d46e04cd5eca3d56e94f752f945196709e82c1cba8f106a87c4f4d35a311e7788731

    • SSDEEP

      12288:JcrNS33L10QdrXZT+tcWnvlOAYnPQY5WEtuWcy1MERYs:0NA3R5drX/WvwpnPQY0x9uME6s

    • RedLine

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

    • RedLine payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • 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

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Stops running service(s)

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • 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 v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Impair Defenses

1
T1562

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

2
T1005

Impact

Service Stop

1
T1489

Tasks