Overview

overview

10

Static

static

2b306dd2bf...28.exe

windows7-x64

10

2b306dd2bf...28.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2b306dd2bff7bc569eb2ea4d111f8c28

  • Size

    10.8MB

  • Sample

    220809-z2j18saaf3

  • MD5

    2b306dd2bff7bc569eb2ea4d111f8c28

  • SHA1

    c286e44f212d6dbf904cb3af1f614fa5b9ab78d3

  • SHA256

    a1dd0a256d00b4bd84184b8f619934094bfdbd80aa0b28ddfa47ee42964f0f79

  • SHA512

    4bc00549885f01cf96b34458dcb0fa5354bdcebdd965f3663a927a94b8c19e8aa47091b8debd394845bff2d016fe2b157f5575c9197a01b2ac875f89ed75432f

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      2b306dd2bff7bc569eb2ea4d111f8c28

    • Size

      10.8MB

    • MD5

      2b306dd2bff7bc569eb2ea4d111f8c28

    • SHA1

      c286e44f212d6dbf904cb3af1f614fa5b9ab78d3

    • SHA256

      a1dd0a256d00b4bd84184b8f619934094bfdbd80aa0b28ddfa47ee42964f0f79

    • SHA512

      4bc00549885f01cf96b34458dcb0fa5354bdcebdd965f3663a927a94b8c19e8aa47091b8debd394845bff2d016fe2b157f5575c9197a01b2ac875f89ed75432f

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • Tofsee

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

      trojantofsee

    • xmrig

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

      minerxmrig

    • XMRig Miner payload

      miner

    • Creates new service(s)

      persistence

    • Executes dropped EXE

    • 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.

    • 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

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks