Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    1b2c0acd5d2ba3645ad133e9a9ca7794343557c590225a1a400d8fcfe3bdf9cc

  • Size

    213KB

  • Sample

    240904-ys6yzavglr

  • MD5

    f9ad5be234e6344809c7ff448e159a7d

  • SHA1

    0415a25b3d0a26fdc3f860abbbc1ffc02524aed4

  • SHA256

    1b2c0acd5d2ba3645ad133e9a9ca7794343557c590225a1a400d8fcfe3bdf9cc

  • SHA512

    aefd78cd2dfe9bb61fa08cf80959b83ce8c14dcb6ff9230b8386b1e04965bec63bb4c4b5c2446990e3d6ec10963255b4bc34e280af22cc27bee653365f0cb3c5

  • SSDEEP

    3072:0ASCGfSRnbJBJyvE3gCD5aYTGnfH7g9aHlfwR+9pbQ:wfSRnbJBJywgFYTutoRE

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      1b2c0acd5d2ba3645ad133e9a9ca7794343557c590225a1a400d8fcfe3bdf9cc

    • Size

      213KB

    • MD5

      f9ad5be234e6344809c7ff448e159a7d

    • SHA1

      0415a25b3d0a26fdc3f860abbbc1ffc02524aed4

    • SHA256

      1b2c0acd5d2ba3645ad133e9a9ca7794343557c590225a1a400d8fcfe3bdf9cc

    • SHA512

      aefd78cd2dfe9bb61fa08cf80959b83ce8c14dcb6ff9230b8386b1e04965bec63bb4c4b5c2446990e3d6ec10963255b4bc34e280af22cc27bee653365f0cb3c5

    • SSDEEP

      3072:0ASCGfSRnbJBJyvE3gCD5aYTGnfH7g9aHlfwR+9pbQ:wfSRnbJBJywgFYTutoRE

    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