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

    264KB

  • Sample

    230515-rjy4faeb8s

  • MD5

    d09b253fe63c553f18390c64fae241b2

  • SHA1

    59462f514478528abce4ba8071475cd7eed4f518

  • SHA256

    6989520bc009b96f7023447c961deb13cf6f5fa915c8e72ec05e14a1ef00ba7c

  • SHA512

    315ba07bbd61fe27533fcb2657ff7cc4b8b7d1bf090377f815fe2dddb8029875c746ab540261f0d3ad411f0193703b4d2b2e1859b05ba9c5e132fb649d39108e

  • SSDEEP

    3072:bp41b88SQkCni4itSJrc9WFHzO5t0e6LE483cZScA3Q3gORWz+7sLC44mKPl2yC:s5SHSJA9UHwSe6a3Rw3AmpY7MZ

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      264KB

    • MD5

      d09b253fe63c553f18390c64fae241b2

    • SHA1

      59462f514478528abce4ba8071475cd7eed4f518

    • SHA256

      6989520bc009b96f7023447c961deb13cf6f5fa915c8e72ec05e14a1ef00ba7c

    • SHA512

      315ba07bbd61fe27533fcb2657ff7cc4b8b7d1bf090377f815fe2dddb8029875c746ab540261f0d3ad411f0193703b4d2b2e1859b05ba9c5e132fb649d39108e

    • SSDEEP

      3072:bp41b88SQkCni4itSJrc9WFHzO5t0e6LE483cZScA3Q3gORWz+7sLC44mKPl2yC:s5SHSJA9UHwSe6a3Rw3AmpY7MZ

    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