Overview

overview

10

Static

static

5341d980bb...a7.exe

windows7-x64

10

5341d980bb...a7.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    5341d980bb935f41c8a0854ad9351ea7

  • Size

    12.4MB

  • Sample

    220809-z2a4bsaad9

  • MD5

    5341d980bb935f41c8a0854ad9351ea7

  • SHA1

    0c6cc116a730efaa24d4fd537ffac420b61bba17

  • SHA256

    720b572ffbf5f17e3d163cb5f7209fcff796d2b644069678c91088ec5c15a317

  • SHA512

    f1e89000cebce74e0526d02f74e0994aa4d0b09d47f436603774a1e12e0f13916f7548015618989c4c3692b79d519ed61d2512017b0ac5bda955c10c8f9d2973

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      5341d980bb935f41c8a0854ad9351ea7

    • Size

      12.4MB

    • MD5

      5341d980bb935f41c8a0854ad9351ea7

    • SHA1

      0c6cc116a730efaa24d4fd537ffac420b61bba17

    • SHA256

      720b572ffbf5f17e3d163cb5f7209fcff796d2b644069678c91088ec5c15a317

    • SHA512

      f1e89000cebce74e0526d02f74e0994aa4d0b09d47f436603774a1e12e0f13916f7548015618989c4c3692b79d519ed61d2512017b0ac5bda955c10c8f9d2973

    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