Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    file

  • Size

    233KB

  • Sample

    230517-gmaj5sdh44

  • MD5

    b76e2d8db8266762c770fbf801b33917

  • SHA1

    f8a8d5ced370552210f2b449ec2822c48e470bac

  • SHA256

    54f74659a4f85bab878e448b3ae96242c24f98f054cd7a16ce2a6b6daae4a70e

  • SHA512

    55b1de5e83d1f2cb7840b2eee2ac40dfcb0c1d289568b63a41e4b459f5fbb599c934df2805c1dd9b2b344133a39d4c2950997796605624ffff4dac1b32d7f76b

  • SSDEEP

    3072:EpqwYirEGOie1jXG7NlKAwQgbzRKr+6g3SVdwMByxMKiY54mYidF5Fkn:fwkGOCKbQIKL8vChm4m

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      233KB

    • MD5

      b76e2d8db8266762c770fbf801b33917

    • SHA1

      f8a8d5ced370552210f2b449ec2822c48e470bac

    • SHA256

      54f74659a4f85bab878e448b3ae96242c24f98f054cd7a16ce2a6b6daae4a70e

    • SHA512

      55b1de5e83d1f2cb7840b2eee2ac40dfcb0c1d289568b63a41e4b459f5fbb599c934df2805c1dd9b2b344133a39d4c2950997796605624ffff4dac1b32d7f76b

    • SSDEEP

      3072:EpqwYirEGOie1jXG7NlKAwQgbzRKr+6g3SVdwMByxMKiY54mYidF5Fkn:fwkGOCKbQIKL8vChm4m

    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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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