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

  • Size

    213KB

  • Sample

    230417-pqgfvseb86

  • MD5

    dac1f98021e82370657ca79d43940e9e

  • SHA1

    1d69c84299549560c1a46d085256a27d6a074621

  • SHA256

    209e78147c676b2562945d15e0637303f819bc8a2f0e34f5cfa8ba16137e85a5

  • SHA512

    56f829653430fffee2e9799902fd38bb726c28bdda5accd43e5c3b333ef2c909d7b9c865e8ba3041609bfc415b9283a9cf4d3888dd81b1091fae7b7cc53b5432

  • SSDEEP

    3072:HnCD27R5eVPDZg4lrEh+DsuNk0+LpzCJMZZmEo8ksJ5tMxqyI7iMPre:HRjeVPu4lrEh+Dsik0+RTDw9u/7iMT

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      213KB

    • MD5

      dac1f98021e82370657ca79d43940e9e

    • SHA1

      1d69c84299549560c1a46d085256a27d6a074621

    • SHA256

      209e78147c676b2562945d15e0637303f819bc8a2f0e34f5cfa8ba16137e85a5

    • SHA512

      56f829653430fffee2e9799902fd38bb726c28bdda5accd43e5c3b333ef2c909d7b9c865e8ba3041609bfc415b9283a9cf4d3888dd81b1091fae7b7cc53b5432

    • SSDEEP

      3072:HnCD27R5eVPDZg4lrEh+DsuNk0+LpzCJMZZmEo8ksJ5tMxqyI7iMPre:HRjeVPu4lrEh+Dsik0+RTDw9u/7iMT

    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 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