Overview

overview

10

Static

static

3

79304d3709...53.exe

windows7-x64

10

79304d3709...53.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    79304d3709f4266d76e318d24d5863b3cc14a8fb64bc02145fbf23d398803753

  • Size

    237KB

  • Sample

    241013-ygy4zsvdpe

  • MD5

    e180178b04f30c79a29231d10dbf3549

  • SHA1

    31dec58acfcbf1f9b60a53ca6a0e589123106450

  • SHA256

    79304d3709f4266d76e318d24d5863b3cc14a8fb64bc02145fbf23d398803753

  • SHA512

    7036bcead8bcbaa1e40158b78cdcf5fa137f14a330670bfafca807c237eb4779a35a81a0be78c8a10358346a3adb60a737ca3e4699660f6117b36b470c6d6e9f

  • SSDEEP

    3072:ALEeqY70pT7Ov4epeBWsj5zEqONJUFqQj1yw7:ALEHRpT7cxM1XFE

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      79304d3709f4266d76e318d24d5863b3cc14a8fb64bc02145fbf23d398803753

    • Size

      237KB

    • MD5

      e180178b04f30c79a29231d10dbf3549

    • SHA1

      31dec58acfcbf1f9b60a53ca6a0e589123106450

    • SHA256

      79304d3709f4266d76e318d24d5863b3cc14a8fb64bc02145fbf23d398803753

    • SHA512

      7036bcead8bcbaa1e40158b78cdcf5fa137f14a330670bfafca807c237eb4779a35a81a0be78c8a10358346a3adb60a737ca3e4699660f6117b36b470c6d6e9f

    • SSDEEP

      3072:ALEeqY70pT7Ov4epeBWsj5zEqONJUFqQj1yw7:ALEHRpT7cxM1XFE

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • Tofsee

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

      trojantofsee

    • 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 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

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
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