Overview

overview

10

Static

static

3

e6047ee3e2...d7.exe

windows7-x64

10

e6047ee3e2...d7.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    e6047ee3e2b7715bf8aa2ed7be60c9d7.exe

  • Size

    238KB

  • Sample

    241013-f6kc1s1enf

  • MD5

    e6047ee3e2b7715bf8aa2ed7be60c9d7

  • SHA1

    8754c4ec41c424aca4e8e4d4f0dc69e0b6b08808

  • SHA256

    6622b3119c7f0e8c1228b18773cd76721c77a3fd7d871c8943974a034652b8a0

  • SHA512

    31458e228c2d778ad9eaf14fc7debec7bd00db22941d2fd5f29fa73b5f2f076210fd45db2fccd43851f0ce9ca02b77328047470dbd5258343f5e6f31211e965f

  • SSDEEP

    6144:mwDpmSK310WEb9GBW73mIX/MIos0Vdh1aQ:moppM10WSKY2IQVdz

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      e6047ee3e2b7715bf8aa2ed7be60c9d7.exe

    • Size

      238KB

    • MD5

      e6047ee3e2b7715bf8aa2ed7be60c9d7

    • SHA1

      8754c4ec41c424aca4e8e4d4f0dc69e0b6b08808

    • SHA256

      6622b3119c7f0e8c1228b18773cd76721c77a3fd7d871c8943974a034652b8a0

    • SHA512

      31458e228c2d778ad9eaf14fc7debec7bd00db22941d2fd5f29fa73b5f2f076210fd45db2fccd43851f0ce9ca02b77328047470dbd5258343f5e6f31211e965f

    • SSDEEP

      6144:mwDpmSK310WEb9GBW73mIX/MIos0Vdh1aQ:moppM10WSKY2IQVdz

    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