General

  • Target

    Sapphire.exe

  • Size

    372KB

  • Sample

    211015-1zhaasbef4

  • MD5

    4e9369d450438e15962feb5859a43339

  • SHA1

    2ffd83ef65c0403660268a115595c5fb3cfc8e1d

  • SHA256

    94cbc6a1b4cc99bbfb3824eab5720009773c04a2b4e628789d7db4f824a78201

  • SHA512

    4cf0edbd02b09637802b859fb0e4f7b73e55bdca753041327a88048953952ccd71bfee816a5d2b2667c254beae3712037c23531b304a048757b529a5276542c8

Malware Config

Extracted

Family

redline

C2

141.94.188.139:43059

Targets

    • Target

      Sapphire.exe

    • Size

      372KB

    • MD5

      4e9369d450438e15962feb5859a43339

    • SHA1

      2ffd83ef65c0403660268a115595c5fb3cfc8e1d

    • SHA256

      94cbc6a1b4cc99bbfb3824eab5720009773c04a2b4e628789d7db4f824a78201

    • SHA512

      4cf0edbd02b09637802b859fb0e4f7b73e55bdca753041327a88048953952ccd71bfee816a5d2b2667c254beae3712037c23531b304a048757b529a5276542c8

    • RedLine

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

    • RedLine Payload

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner Payload

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Tasks