Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    250KB

  • Sample

    230328-c1vp1sge96

  • MD5

    26f7d2732dc1d76aab1a6492f7f106ee

  • SHA1

    56ba7b43e686228f0aba17f3e8c6faad01efbd91

  • SHA256

    5587bfaf4c6d7b43361c99427fd1d4004d6c4c366be156dac0394733893561d1

  • SHA512

    5e8a066c512ceccab071dbad8a6eafaa76de89969e762f6ef1e6373ee32e7bb8516ba9518a4c1918711221ca7ec7dc3a6afdc10933f342659411ca30c9ca880d

  • SSDEEP

    3072:LZ4aHyaN3EldLhSfz22RsvJxW9m+niPZhDUv7dFEIFu2/bH+lev4Qj5EvLwc7w:KOyasdLA7sJ+i8vZFy8L+lDG

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      250KB

    • MD5

      26f7d2732dc1d76aab1a6492f7f106ee

    • SHA1

      56ba7b43e686228f0aba17f3e8c6faad01efbd91

    • SHA256

      5587bfaf4c6d7b43361c99427fd1d4004d6c4c366be156dac0394733893561d1

    • SHA512

      5e8a066c512ceccab071dbad8a6eafaa76de89969e762f6ef1e6373ee32e7bb8516ba9518a4c1918711221ca7ec7dc3a6afdc10933f342659411ca30c9ca880d

    • SSDEEP

      3072:LZ4aHyaN3EldLhSfz22RsvJxW9m+niPZhDUv7dFEIFu2/bH+lev4Qj5EvLwc7w:KOyasdLA7sJ+i8vZFy8L+lDG

    Score
    10/10
    tofseexmrigevasionminerpersistencetrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • xmrig

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

      minerxmrig

    • XMRig Miner payload

      miner

    • Creates new service(s)

      persistence

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • 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

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks