Overview

overview

10

Static

static

3

ed8e31c2fc...d3.exe

windows7-x64

10

ed8e31c2fc...d3.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    0ad510cda940ae8424cb2d6b11e708f53126da5383e6013415fa16013d335232

  • Size

    147KB

  • Sample

    240417-qs3bsahf54

  • MD5

    b0a09657782664140acee4e7cad1e1bd

  • SHA1

    e7f2c50a33b688fa84eec1db6834fbf7ed046a84

  • SHA256

    0ad510cda940ae8424cb2d6b11e708f53126da5383e6013415fa16013d335232

  • SHA512

    44dde8186a72ea89c4c9698232281f2c08dec8f0c60512284d1f1f64791aef59763da55121df136feec037e57c7d43afe82c43fe6f199572ce26ad2893f167b7

  • SSDEEP

    3072:N8n4lIDdSiHW1bGUUOjyRJ5qw/PFS9GHHYF:NgWIDdSi6GayRvJlS96HE

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      ed8e31c2fccca230c75e8246d3e31ee548af0139a1e8dfb4038fa256d362c3d3.exe

    • Size

      244KB

    • MD5

      cd2eb2cfc4675f413db94ff743d195d7

    • SHA1

      bd7b6b5a94387779d88bbfe1e32fa13666be6e9b

    • SHA256

      ed8e31c2fccca230c75e8246d3e31ee548af0139a1e8dfb4038fa256d362c3d3

    • SHA512

      5c8a1460d71f6db9fede021d2b8521877f85da7ec1b101815577a19a09dfe374526c74eb5f62c38cf56a10d54c4dd2362de07388c76170a6fa7618be9ef8f782

    • SSDEEP

      3072:C7lSzmWVD0wRzLKqBKWBgOlaR+f+TmAC+3IxY1b+wiOMOl3eAwXsUvfXVkwIwC8Z:+4x0YLFoegOlaR+WCFi1bviKeXfmh8

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • 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 v13

Initial Access

Execution

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Disable or Modify System Firewall

1
T1562.004

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks