Overview

overview

10

Static

static

93631bf8b4...83.exe

windows7-x64

10

93631bf8b4...83.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    93631bf8b4dacdddb67851b76d8b797a00882fb03e9e0cf5fb86e7b4e5141883.zip

  • Size

    111KB

  • Sample

    221124-rgc37ahf62

  • MD5

    efe4b7bd3a9c0e95372263c6578303a1

  • SHA1

    d7f5b80de2beb8894d7c33e9e6c9e69083e83afc

  • SHA256

    a24fbd10f52c26d3f50e648625b48ff37c1e84cdb45fd31dda1c9589cf168f5b

  • SHA512

    22437e5c4dd4ee06345715acf33280f89c859991f3bb0664c070659e97690574b109da476d3d976231c846f3047ab7b3b83869d6ca491b504e04381f171f7fbd

  • SSDEEP

    3072:yiPLf4GPwVBxGHYK5FK6F/AiioacciRaY:yEPMBcHYKTF3io8Y

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      93631bf8b4dacdddb67851b76d8b797a00882fb03e9e0cf5fb86e7b4e5141883.exe

    • Size

      163KB

    • MD5

      238a6c05a356546d9f41e4ce53d989f3

    • SHA1

      304155abbd030ea827e20cd7cd6677f5e69a6871

    • SHA256

      93631bf8b4dacdddb67851b76d8b797a00882fb03e9e0cf5fb86e7b4e5141883

    • SHA512

      38ddba65054480c7348d736274089a5846f1a1180fdd134966ff0f82bba32c9de676d68015fb1457a5def2c5ac4dd61c1c08ccf572f3cbc47cef6ad539cc98b3

    • SSDEEP

      3072:QaxY4k2cA2yg5NMEg+i2wrMyN+6xsYgvqlKqtYUFD:QCl2u1kJyNR98

    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