Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    bb3a5c0114dc8dbc9fce30575cb5f0bf2709253a66ebfb8809a88d50490a5b36

  • Size

    213KB

  • Sample

    240905-b6tjgasapf

  • MD5

    b89aff3b390a672343dc60c215c28bdb

  • SHA1

    e3828b70636ed31eacdcbae862d8d5487f78cd90

  • SHA256

    bb3a5c0114dc8dbc9fce30575cb5f0bf2709253a66ebfb8809a88d50490a5b36

  • SHA512

    177c7babcbcb801e4f879e07a3a7591eceae64bd938aa47182a23ba0dd4e36541fed6590326f22623f4775fc7b8b3b359efb775376eb7a9682ae373d3330a5eb

  • SSDEEP

    3072:mSKC+fip7D1JpMrTMWqdNmOyjzUcLzxJzQlfDKNShs5bQ:Yfip7D1Jp6A1gOKLa2Aw

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      bb3a5c0114dc8dbc9fce30575cb5f0bf2709253a66ebfb8809a88d50490a5b36

    • Size

      213KB

    • MD5

      b89aff3b390a672343dc60c215c28bdb

    • SHA1

      e3828b70636ed31eacdcbae862d8d5487f78cd90

    • SHA256

      bb3a5c0114dc8dbc9fce30575cb5f0bf2709253a66ebfb8809a88d50490a5b36

    • SHA512

      177c7babcbcb801e4f879e07a3a7591eceae64bd938aa47182a23ba0dd4e36541fed6590326f22623f4775fc7b8b3b359efb775376eb7a9682ae373d3330a5eb

    • SSDEEP

      3072:mSKC+fip7D1JpMrTMWqdNmOyjzUcLzxJzQlfDKNShs5bQ:Yfip7D1Jp6A1gOKLa2Aw

    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