General

  • Target

    C4Loader.exe

  • Size

    451KB

  • Sample

    221116-rgqdhsbf72

  • MD5

    6ebfb1bc4aef4886d38fbb5170371b58

  • SHA1

    084b3f0910c3fcf8a4cfeed2428ff786b94f3759

  • SHA256

    dcdf6845df1e1aed6f335dd6f2a3ff7351984522235937e5c4a1c746c7fe4371

  • SHA512

    c041161a616de51ebe98e01c93e710ccf177a52f998376808b56e6e624c40729377298335fde0092b2472af3acd8e9b417701f23c4afc24053e837f17346300a

  • SSDEEP

    6144:aO6T/AiMhIbmjE1RrkHDS83avj7hPBV8MvqndNrhuCJm/rGlnrxZOc:cT/yIKjE1RrkHDS83aHTehuCJwGlnXJ

Malware Config

Extracted

Family

redline

Botnet

1

C2

107.182.129.73:21733

Attributes
  • auth_value

    3a5bb0917495b4312d052a0b8977d2bb

Targets

    • Target

      C4Loader.exe

    • Size

      451KB

    • MD5

      6ebfb1bc4aef4886d38fbb5170371b58

    • SHA1

      084b3f0910c3fcf8a4cfeed2428ff786b94f3759

    • SHA256

      dcdf6845df1e1aed6f335dd6f2a3ff7351984522235937e5c4a1c746c7fe4371

    • SHA512

      c041161a616de51ebe98e01c93e710ccf177a52f998376808b56e6e624c40729377298335fde0092b2472af3acd8e9b417701f23c4afc24053e837f17346300a

    • SSDEEP

      6144:aO6T/AiMhIbmjE1RrkHDS83avj7hPBV8MvqndNrhuCJm/rGlnrxZOc:cT/yIKjE1RrkHDS83aHTehuCJwGlnXJ

    • Modifies security service

    • 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.

    • XMRig Miner payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Stops running service(s)

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Scheduled Task

1
T1053

Persistence

Modify Existing Service

2
T1031

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Impair Defenses

1
T1562

Scripting

1
T1064

Credential Access

Credentials in Files

1
T1081

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Impact

Service Stop

1
T1489

Tasks