Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    347KB

  • Sample

    230416-halx3sag9t

  • MD5

    0c1708ed3939df691fcc921eeca929e8

  • SHA1

    1423af702026959fb660354fdab5252f7342b763

  • SHA256

    a71e5f2db834e7eb59cb1089a56dbd3e0b3dfcfc605efb9a8a42b17d3f19445c

  • SHA512

    502ee675cb930d2f12e7c7f012296831fcefef2c27983dcc9f15d0f41616cbf9857f5bc63d22849d419ac7d4ca80cc6aa9809c1ba4c6343a4b45ddc935e0784c

  • SSDEEP

    6144:ieI4cg3BjROHIH8SOm28gIk1nvPCX6tbe4:iercM3OHIH8zmwIk1vPQ6tq4

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      347KB

    • MD5

      0c1708ed3939df691fcc921eeca929e8

    • SHA1

      1423af702026959fb660354fdab5252f7342b763

    • SHA256

      a71e5f2db834e7eb59cb1089a56dbd3e0b3dfcfc605efb9a8a42b17d3f19445c

    • SHA512

      502ee675cb930d2f12e7c7f012296831fcefef2c27983dcc9f15d0f41616cbf9857f5bc63d22849d419ac7d4ca80cc6aa9809c1ba4c6343a4b45ddc935e0784c

    • SSDEEP

      6144:ieI4cg3BjROHIH8SOm28gIk1nvPCX6tbe4:iercM3OHIH8zmwIk1vPQ6tq4

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • 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

    • 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