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General

  • Target

    01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.zip

  • Size

    130KB

  • Sample

    230308-pzryysba44

  • MD5

    c7d3c4c67f5f2d7a952b0f5e000de546

  • SHA1

    132027915bf34e8472aa6aa8442babf4dcc04d2e

  • SHA256

    d0519356e527a177d7393d16472ce669a1e7526546446c4c85989bc5549ef51c

  • SHA512

    dcfdae3c40ad654fd1e2fc0ef07fba0585c00f273fa4d172ef6b2f9d5fe8d3ba04ea14c26e3faf070e9315339376713741df786d06e52e659e3f0ef44e98f525

  • SSDEEP

    3072:zBQB7dZtzJ8eAZkKbdoTTXzc+9UfkM1HKNKuPjkaAZRCqG2Db:zmhdZlAZFBoTTX6sM1qNKunAZRCqG2H

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe

    • Size

      195KB

    • MD5

      e6633af95778725d06d9adc558c55040

    • SHA1

      3020a3b73ca13402a9bf25ffadd8fe85fa091148

    • SHA256

      01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e

    • SHA512

      55efc150e23b178ea53f4c3fe24ea4162c56037ad0b03a5817ec2d64401fd0d21fa07717f88abb7f96337f768fed55d3b5c54ccf8eb40002561ea47d9244af12

    • SSDEEP

      3072:gUHMJ/RMC7brSsy0ELqqWq54W22KjCp1dsLXDOQbVYC2:gEM1RD7b2sy0nnqwbjAeLXrbV2

    • 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 v6

Tasks