Overview

overview

10

Static

static

3

a078ee9114...54.exe

windows7-x64

10

a078ee9114...54.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    a078ee9114d1a84eebf3907da57c45688e9a83578a2c885ff828a1af190f5054

  • Size

    11.9MB

  • Sample

    240511-j7s84agd5s

  • MD5

    09f9db5d494ac551d4889428ab8bb152

  • SHA1

    85154b6284cfe04cf421c26c8f6fdb3fd0fca7b8

  • SHA256

    a078ee9114d1a84eebf3907da57c45688e9a83578a2c885ff828a1af190f5054

  • SHA512

    5f6b59b8bad754d6c9a545d9b73e04456258ad70395d9df9b97e1797749b8bdbaa18fbc4dd0e212ee17bbfd4b84687265a13671bc08b9ed44b336b58b425a52f

  • SSDEEP

    98304:BGWqJ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++e:R

Score
10/10
tofseeevasionexecutionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      a078ee9114d1a84eebf3907da57c45688e9a83578a2c885ff828a1af190f5054

    • Size

      11.9MB

    • MD5

      09f9db5d494ac551d4889428ab8bb152

    • SHA1

      85154b6284cfe04cf421c26c8f6fdb3fd0fca7b8

    • SHA256

      a078ee9114d1a84eebf3907da57c45688e9a83578a2c885ff828a1af190f5054

    • SHA512

      5f6b59b8bad754d6c9a545d9b73e04456258ad70395d9df9b97e1797749b8bdbaa18fbc4dd0e212ee17bbfd4b84687265a13671bc08b9ed44b336b58b425a52f

    • SSDEEP

      98304:BGWqJ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++e:R

    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