Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    318KB

  • Sample

    230511-y7t8qacg5x

  • MD5

    b101be318ab44ddbbabf025ef02e9a29

  • SHA1

    0e3d67a5c6f97f6f1d23a9540336b3ded4eaa13f

  • SHA256

    0967dfa48bd1d2d0e282f762e9be80315cc6ea75b6e1b34d73f066c47ab46612

  • SHA512

    79533d9d92770221a5631f942d48f893ec5cf0d3c8af899465b2cc4b4b92da5c3787cc65425c34d026fcb646b08348dd68ec14a3c9f56cdd914591594f8aa001

  • SSDEEP

    3072:TpXtNfDL3hmn5585BYMpYEvLDWPS5Z2wg3z2zxBUb5EpMYNY0lKRfeJ:RnLL3h45VMpYi2czjlpxPcQJ

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      318KB

    • MD5

      b101be318ab44ddbbabf025ef02e9a29

    • SHA1

      0e3d67a5c6f97f6f1d23a9540336b3ded4eaa13f

    • SHA256

      0967dfa48bd1d2d0e282f762e9be80315cc6ea75b6e1b34d73f066c47ab46612

    • SHA512

      79533d9d92770221a5631f942d48f893ec5cf0d3c8af899465b2cc4b4b92da5c3787cc65425c34d026fcb646b08348dd68ec14a3c9f56cdd914591594f8aa001

    • SSDEEP

      3072:TpXtNfDL3hmn5585BYMpYEvLDWPS5Z2wg3z2zxBUb5EpMYNY0lKRfeJ:RnLL3h45VMpYi2czjlpxPcQJ

    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