Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    file.exe

  • Size

    167KB

  • Sample

    221125-2kc8gafa61

  • MD5

    65e43f6b5f4bbf71f6ecab7473d5f169

  • SHA1

    647be05e012efc56178c827e429208f773e7358c

  • SHA256

    af4515bb1ca19b5fdc2cf47391594cb4ca3f2c3063a1c703e4331e741d31e4fc

  • SHA512

    9da8f0b9be029a65d2971ccb936a0c0a08a33275f3260ac232f497744ba8bb088dd377a0aaf2c083cdc3d2bb0d1f39d9af19ac79f245276ce64c43fe1adb07c9

  • SSDEEP

    3072:RPJ1pyY1u2XpS5VL7++e3BuFF9uOnWR0vkqNuG2:N0iZXh+eKFlWmk+u

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      167KB

    • MD5

      65e43f6b5f4bbf71f6ecab7473d5f169

    • SHA1

      647be05e012efc56178c827e429208f773e7358c

    • SHA256

      af4515bb1ca19b5fdc2cf47391594cb4ca3f2c3063a1c703e4331e741d31e4fc

    • SHA512

      9da8f0b9be029a65d2971ccb936a0c0a08a33275f3260ac232f497744ba8bb088dd377a0aaf2c083cdc3d2bb0d1f39d9af19ac79f245276ce64c43fe1adb07c9

    • SSDEEP

      3072:RPJ1pyY1u2XpS5VL7++e3BuFF9uOnWR0vkqNuG2:N0iZXh+eKFlWmk+u

    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

    • Executes dropped EXE

    • 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

    • 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