Overview

overview

10

Static

static

10

8f068c21f7...cN.exe

windows7-x64

10

8f068c21f7...cN.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    8f068c21f73b64644779c6d31a47f4014ad4dbf0d958cd3fb673b6617ca6e2ecN

  • Size

    71KB

  • Sample

    241002-y23ynsyala

  • MD5

    ea08cac77aa15c1742504a58c8f00180

  • SHA1

    f7b023d2a29ca6c19ed669e0f73c8f5f84dc4379

  • SHA256

    8f068c21f73b64644779c6d31a47f4014ad4dbf0d958cd3fb673b6617ca6e2ec

  • SHA512

    303bc40c4e06c4479260b42c9ea9b8f38502a0dd3f98de06767762690978d49bdefa12c370151a9338996109f7dea8a2140ae28837b884ed65287f42b0ebefa3

  • SSDEEP

    1536:Dkes21VCy1nTxSYg3CXTjFWL9o5dpIHUc:DDVCyFxSYACXFppI0

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      8f068c21f73b64644779c6d31a47f4014ad4dbf0d958cd3fb673b6617ca6e2ecN

    • Size

      71KB

    • MD5

      ea08cac77aa15c1742504a58c8f00180

    • SHA1

      f7b023d2a29ca6c19ed669e0f73c8f5f84dc4379

    • SHA256

      8f068c21f73b64644779c6d31a47f4014ad4dbf0d958cd3fb673b6617ca6e2ec

    • SHA512

      303bc40c4e06c4479260b42c9ea9b8f38502a0dd3f98de06767762690978d49bdefa12c370151a9338996109f7dea8a2140ae28837b884ed65287f42b0ebefa3

    • SSDEEP

      1536:Dkes21VCy1nTxSYg3CXTjFWL9o5dpIHUc:DDVCyFxSYACXFppI0

    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

    • 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