Overview

overview

10

Static

static

3

ae594cd758...bb.exe

windows7-x64

10

ae594cd758...bb.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    ae594cd758beff9851a2637e2f26995dccc8fd74d7f1078bc34d5a49da2a14bb

  • Size

    291KB

  • Sample

    241122-teaamazlhr

  • MD5

    43a25bb717d44913af7b0d390c470fd2

  • SHA1

    8f19a4b22fbcf9c7d90d0c7c8696e88e7f28f300

  • SHA256

    ae594cd758beff9851a2637e2f26995dccc8fd74d7f1078bc34d5a49da2a14bb

  • SHA512

    f339e96201bfd272ef1399d75cd539bc726b66c599927e3d6abd96c6480bf00e466a7ee1b7d284aae1a604e5adfd3a25f544c29b306f43c2069e2f58a649fe29

  • SSDEEP

    6144:A+SwPImN4/CnKjOL9TpU+8aVuKk9i98J/os:1NNICnKjOJTpUJyk9iW6s

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      ae594cd758beff9851a2637e2f26995dccc8fd74d7f1078bc34d5a49da2a14bb

    • Size

      291KB

    • MD5

      43a25bb717d44913af7b0d390c470fd2

    • SHA1

      8f19a4b22fbcf9c7d90d0c7c8696e88e7f28f300

    • SHA256

      ae594cd758beff9851a2637e2f26995dccc8fd74d7f1078bc34d5a49da2a14bb

    • SHA512

      f339e96201bfd272ef1399d75cd539bc726b66c599927e3d6abd96c6480bf00e466a7ee1b7d284aae1a604e5adfd3a25f544c29b306f43c2069e2f58a649fe29

    • SSDEEP

      6144:A+SwPImN4/CnKjOL9TpU+8aVuKk9i98J/os:1NNICnKjOJTpUJyk9iW6s

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • Tofsee

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

      trojantofsee

    • Tofsee family

      tofsee

    • 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