Overview

overview

10

Static

static

9b3ee7eac4...31.exe

windows7-x64

10

9b3ee7eac4...31.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    9b3ee7eac467590e2d4e7d367b376331

  • Size

    14.3MB

  • Sample

    220809-z2mr5agdar

  • MD5

    9b3ee7eac467590e2d4e7d367b376331

  • SHA1

    b872ede2230e20b6fd288521512448fc8632dcfb

  • SHA256

    5e982aafb8033b6c065e7fe8b8b576475bf83abf1e8f4a519a3435781eca1325

  • SHA512

    b48b29cf1077391a800dc438da22d359d9a8c44923f94a6337b579d1f902eb7cf6fdb0ebb585b552f6b9a1becfbf62d35bf8e4e71a7d8d7bc3285b67ad3291b9

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      9b3ee7eac467590e2d4e7d367b376331

    • Size

      14.3MB

    • MD5

      9b3ee7eac467590e2d4e7d367b376331

    • SHA1

      b872ede2230e20b6fd288521512448fc8632dcfb

    • SHA256

      5e982aafb8033b6c065e7fe8b8b576475bf83abf1e8f4a519a3435781eca1325

    • SHA512

      b48b29cf1077391a800dc438da22d359d9a8c44923f94a6337b579d1f902eb7cf6fdb0ebb585b552f6b9a1becfbf62d35bf8e4e71a7d8d7bc3285b67ad3291b9

    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