Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    7d337cf7f54e13aa3d045336030074af0cdab304f1e781d611d086b3e7cfe438

  • Size

    238KB

  • Sample

    240907-w8llvs1apf

  • MD5

    54652c24cf369040689e46afeb083ee8

  • SHA1

    80b30eb64cb5e62af500b135f889c801f5468172

  • SHA256

    7d337cf7f54e13aa3d045336030074af0cdab304f1e781d611d086b3e7cfe438

  • SHA512

    cc568c8d3f7e0a21c1f4d3610832a1e8ec54e5256d0d478ab015ddbf5994a109850d82d849e8b47185ec8e358409492850ee1f181c728fa39ab2942a45bf4523

  • SSDEEP

    3072:S758AfWsgvZ6xR1wv7NMFYUSkxtDdAHvVkkLgpFCWs/xL/Q:ifWsgvZ6xR1G7NWzSkTDdtloF/Q

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      7d337cf7f54e13aa3d045336030074af0cdab304f1e781d611d086b3e7cfe438

    • Size

      238KB

    • MD5

      54652c24cf369040689e46afeb083ee8

    • SHA1

      80b30eb64cb5e62af500b135f889c801f5468172

    • SHA256

      7d337cf7f54e13aa3d045336030074af0cdab304f1e781d611d086b3e7cfe438

    • SHA512

      cc568c8d3f7e0a21c1f4d3610832a1e8ec54e5256d0d478ab015ddbf5994a109850d82d849e8b47185ec8e358409492850ee1f181c728fa39ab2942a45bf4523

    • SSDEEP

      3072:S758AfWsgvZ6xR1wv7NMFYUSkxtDdAHvVkkLgpFCWs/xL/Q:ifWsgvZ6xR1G7NWzSkTDdtloF/Q

    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