General

  • Target

    a178fe15ebf9a19326d91ed3ad96e9d0.bin

  • Size

    139KB

  • Sample

    231008-cg84asbg75

  • MD5

    f1200f43dc104555ea4c402f1a3fe6a1

  • SHA1

    18ab60b57513964b9381a24761f5db939477b5f3

  • SHA256

    cd78230a26c8a1a46223034a0518e7a02ff97269cdd681329e7fbb5926028834

  • SHA512

    668b4011ed113aae12b297da3260584c21dde8a364ed0d00fcbd09722ad693df35c4f968c5fdf212329ca76ca5887e277e44eca315c4ce0d44c3bb5b9d4e7398

  • SSDEEP

    3072:lbWcRZAuoYc+MKSOShdejYGbgWPRj5e5w8KYQRF+oJMZ:lbWcR+nUShMoWPRQ5ZGtJMZ

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      37a05f0402fb0ec7ef73e94924e06af497d80d79d9ec01824e4aa2a14d7cc0e0.exe

    • Size

      293KB

    • MD5

      a178fe15ebf9a19326d91ed3ad96e9d0

    • SHA1

      8b1f3fffdbf5bf5e790b08a64880596b15b590c1

    • SHA256

      37a05f0402fb0ec7ef73e94924e06af497d80d79d9ec01824e4aa2a14d7cc0e0

    • SHA512

      252eaa46ea80b0ca08471c7e73a34060f990cc1b33f35f762c1fb7358fd156c053e16a07339483fe0be5f5c94af1e49df042d6f9ff85da504c0653b351dbbbfe

    • SSDEEP

      3072:zqZwkRFuZlLi8x0CIBg3Lip5umjTWz+UFb0DRh1T8k5MU:2NRERi8d0MLaTWzZb0JM

    • 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.

    • XMRig Miner payload

    • Creates new service(s)

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks