Overview

overview

10

Static

static

3

c9ba75c3c2...24.exe

windows7-x64

10

c9ba75c3c2...24.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    5f1d4a07165fea602c726cb5e8cbcb40cd069a4ea22d730500ed7bdd988d9109

  • Size

    127KB

  • Sample

    240417-qj83zaaf21

  • MD5

    1dbb6d35778a9372aeb101840bdca0ad

  • SHA1

    d09351b8d5e769c4745cf9143ab81ac8222fbc67

  • SHA256

    5f1d4a07165fea602c726cb5e8cbcb40cd069a4ea22d730500ed7bdd988d9109

  • SHA512

    17b0b3b931da7a122947d934bf6a8e18e628e65e4d7d12e2efac84a041e9872decd99ed42e2e7d99b8e6b1eba605fd0f2630e79dbd80396f4e7cc458c4e1eea6

  • SSDEEP

    3072:mPqyv4iz3NgJzHG/tAxce6ZiJs1uVJvoQ8R/nhwOjEs:eqAbQzHEQ6Z86uVV8R5wo

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      c9ba75c3c2b17dd64211ae2d9859ced46f797f4f25d867c63c813462a857b524.exe

    • Size

      203KB

    • MD5

      90d047019c018e2188352f9aeee97192

    • SHA1

      e0d7eee14e19ddb119760d4e15e387f285d82076

    • SHA256

      c9ba75c3c2b17dd64211ae2d9859ced46f797f4f25d867c63c813462a857b524

    • SHA512

      4aa2fa4f364a398cb763cbd317ea91dbac17e9e5ed44e5ebe09ba16e62cedb588d98ad807adb84127b00c757bcfef31f229aed5294a71ce682ef494da558b5a7

    • SSDEEP

      3072:DkIfnM3Jq/AmlEkJiAj1K/2sv1p6Ti/ZVqJnctmLoQCCRLQ+cmk:DkIzXlEh5VqKtm8CXcL

    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