Overview

overview

10

Static

static

3

a2ec5b450e...58.exe

windows7-x64

10

a2ec5b450e...58.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    a2ec5b450e99f6ed3e965ba8c5c92eafb1bec8b0db255fd27340d48602488a58

  • Size

    288KB

  • Sample

    241125-ck9t1ayjgm

  • MD5

    9e125786a86974b62a002190eb597e63

  • SHA1

    7689e4ee11a586d89abe6f9ca712a01faeef2e07

  • SHA256

    a2ec5b450e99f6ed3e965ba8c5c92eafb1bec8b0db255fd27340d48602488a58

  • SHA512

    d9ef2479b59767bd7122c85588b6dedde8a2a3dd920051466163a460317c0dea4b9e22c673c8de03d52ab23477f97db5f40642b5c00ae8dddf77b549b7a197ce

  • SSDEEP

    6144:Fh40QUH+s8/rfkZlHIP50yrz7PYKpaZwxuN:FhBHX8/rfkzoR7rz7Pb8Zag

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      a2ec5b450e99f6ed3e965ba8c5c92eafb1bec8b0db255fd27340d48602488a58

    • Size

      288KB

    • MD5

      9e125786a86974b62a002190eb597e63

    • SHA1

      7689e4ee11a586d89abe6f9ca712a01faeef2e07

    • SHA256

      a2ec5b450e99f6ed3e965ba8c5c92eafb1bec8b0db255fd27340d48602488a58

    • SHA512

      d9ef2479b59767bd7122c85588b6dedde8a2a3dd920051466163a460317c0dea4b9e22c673c8de03d52ab23477f97db5f40642b5c00ae8dddf77b549b7a197ce

    • SSDEEP

      6144:Fh40QUH+s8/rfkZlHIP50yrz7PYKpaZwxuN:FhBHX8/rfkzoR7rz7Pb8Zag

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Tofsee family

      tofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistenceexecution

    • 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 Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks