Overview

overview

10

Static

static

3

69b4acf0e4...69.exe

windows7-x64

10

69b4acf0e4...69.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    69b4acf0e4f2fb04e24c83c233f794ea13b47e096cbbda7030c4208de84b2d69

  • Size

    10.9MB

  • Sample

    240529-k8zb6saf22

  • MD5

    d317d5f42247781eb3a91c3ec3e334ab

  • SHA1

    ce9cc42433c12fab5af097adeac7c61317e305aa

  • SHA256

    69b4acf0e4f2fb04e24c83c233f794ea13b47e096cbbda7030c4208de84b2d69

  • SHA512

    dd810a62da01893e76cb36c510fbe52899f2b49e27b673ae99f897ccf27e5fa2b3fd6281461c35dfa743af8ea979415e12c0ffe7a8da3479f91ed7f730f7f0df

  • SSDEEP

    24576:kxtPE2gggggggggggggggggggggggggggggggggggggggggggggggggggggggggg:WtPE

Score
10/10
tofseeevasionexecutionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      69b4acf0e4f2fb04e24c83c233f794ea13b47e096cbbda7030c4208de84b2d69

    • Size

      10.9MB

    • MD5

      d317d5f42247781eb3a91c3ec3e334ab

    • SHA1

      ce9cc42433c12fab5af097adeac7c61317e305aa

    • SHA256

      69b4acf0e4f2fb04e24c83c233f794ea13b47e096cbbda7030c4208de84b2d69

    • SHA512

      dd810a62da01893e76cb36c510fbe52899f2b49e27b673ae99f897ccf27e5fa2b3fd6281461c35dfa743af8ea979415e12c0ffe7a8da3479f91ed7f730f7f0df

    • SSDEEP

      24576:kxtPE2gggggggggggggggggggggggggggggggggggggggggggggggggggggggggg:WtPE

    Score
    10/10
    tofseeevasionexecutionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistenceexecution

    • 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

System Services

1
T1569

Service Execution

1
T1569.002

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