Overview

overview

10

Static

static

3

9e08c4e34c...c6.exe

windows7-x64

10

9e08c4e34c...c6.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    9e08c4e34c5358916c1f360f4c82efc4d7bd77d587cda899691a49c3dffb1bc6

  • Size

    213KB

  • Sample

    240906-m5tcvstbmd

  • MD5

    969450e69a3e85413b63c73abb733bdd

  • SHA1

    b506ca717ff22a749bf6e173a7d02b577564ce27

  • SHA256

    9e08c4e34c5358916c1f360f4c82efc4d7bd77d587cda899691a49c3dffb1bc6

  • SHA512

    8df1b276ff7f5cb67818ccc47158e3ba06f303e6da9aae1e0526c7537cb80d8a59e73e7aca80bd2cd0471a31a1dde49f7e96f05887ca66f9439b460ea3bda858

  • SSDEEP

    6144:PcDXnqPnz58kFjno63Fe/MMQm0Vdh1GQ:PsXq/z5V1nfFxjVdz

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      9e08c4e34c5358916c1f360f4c82efc4d7bd77d587cda899691a49c3dffb1bc6

    • Size

      213KB

    • MD5

      969450e69a3e85413b63c73abb733bdd

    • SHA1

      b506ca717ff22a749bf6e173a7d02b577564ce27

    • SHA256

      9e08c4e34c5358916c1f360f4c82efc4d7bd77d587cda899691a49c3dffb1bc6

    • SHA512

      8df1b276ff7f5cb67818ccc47158e3ba06f303e6da9aae1e0526c7537cb80d8a59e73e7aca80bd2cd0471a31a1dde49f7e96f05887ca66f9439b460ea3bda858

    • SSDEEP

      6144:PcDXnqPnz58kFjno63Fe/MMQm0Vdh1GQ:PsXq/z5V1nfFxjVdz

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks