Overview

overview

10

Static

static

9d1fe9a266...ac.exe

windows7_x64

10

9d1fe9a266...ac.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    9d1fe9a2662b8197482fd35c451577ac.exe

  • Size

    309KB

  • Sample

    220608-k9lgpseghl

  • MD5

    9d1fe9a2662b8197482fd35c451577ac

  • SHA1

    da070a55592640ca42b9e4f38a3f7c3eee2522c1

  • SHA256

    de2146a97f1318d0957c808c23fa813c64955ced2187cdd2cef9d4971f5fc3a5

  • SHA512

    34ad51dd9206777d24b680c2fe329d876e711c143be5aa8c3ebee52409c4fe0b14ff8378ef805c307236dbd62d991eaf41cdd6403057e6f05305b7cb40fe704a

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      9d1fe9a2662b8197482fd35c451577ac.exe

    • Size

      309KB

    • MD5

      9d1fe9a2662b8197482fd35c451577ac

    • SHA1

      da070a55592640ca42b9e4f38a3f7c3eee2522c1

    • SHA256

      de2146a97f1318d0957c808c23fa813c64955ced2187cdd2cef9d4971f5fc3a5

    • SHA512

      34ad51dd9206777d24b680c2fe329d876e711c143be5aa8c3ebee52409c4fe0b14ff8378ef805c307236dbd62d991eaf41cdd6403057e6f05305b7cb40fe704a

    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

    • 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.

    • Deletes itself

    • 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