Overview

overview

10

Static

static

3

fd79a1b3b1...51.exe

windows7-x64

10

fd79a1b3b1...51.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    3e9fb858e219073f01bc09d9a35718ddff855d0c28a0a726adb7c19bc933e1a0

  • Size

    176KB

  • Sample

    240417-qt1jksbc7t

  • MD5

    74fbd27707c0d989894f493987fe0053

  • SHA1

    90db4d0da64afa190d2aba3019b054d1f6699533

  • SHA256

    3e9fb858e219073f01bc09d9a35718ddff855d0c28a0a726adb7c19bc933e1a0

  • SHA512

    8113600f1ae3eca40fd41b3029b6657e71d8b4e3096c933122b6c4a3585248e876fa38f4ba2c8b77019d6eb90b231ac11cfb5c5013d00e52496b4869e7c36c5a

  • SSDEEP

    3072:jStdM5cIjWUMqOtX1OXCa7UgSYj2eNA2Gomkp3qE9D7dDKx7TjHa:jRyfSOpAXYgSA2e6zoL6iwFHHa

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      fd79a1b3b18fca2696c2c58f290a4dadb97e3cdcd6e98d14a63ac3f4a1f2e351.exe

    • Size

      288KB

    • MD5

      8bcf8cc2c1f767e639cfd2de9ad3d548

    • SHA1

      bb80c8229723373216bac840f0604402f594bd89

    • SHA256

      fd79a1b3b18fca2696c2c58f290a4dadb97e3cdcd6e98d14a63ac3f4a1f2e351

    • SHA512

      d890e14d6b46f6a1da5f95acf24f5c9f2da575191c7dbfd15f634715dd612847844d59f3191585ec53c147182bf6d5a8f556ff6bb971cf2c3aab90c63d8ca156

    • SSDEEP

      6144:xecopGFVVZLpU7ZKeo24OazMN/6TMybRXMA:x+pGFfZlU7tokD69bph

    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