Overview

overview

10

Static

static

3

43428294fd...71.exe

windows7-x64

10

43428294fd...71.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    50b9161f0e8bfbba697269af22c122b5772adb275fd485fb3a1136f7bfe5b2e6

  • Size

    129KB

  • Sample

    240417-rj6hhsbd44

  • MD5

    23038d57e1e75a5a389573031f2a07f1

  • SHA1

    eed6b8802a1f77e6aada759d10f9c49f52c3b391

  • SHA256

    50b9161f0e8bfbba697269af22c122b5772adb275fd485fb3a1136f7bfe5b2e6

  • SHA512

    113042005c6e669b7688b9285b54111596a42ba76f7b5bb4f4a976c8aaede53ed8ba000af7c9017e6933f2063d904b305c219abe8b3206f7523dad51b956efd7

  • SSDEEP

    3072:IMPE8P7TOYedF1R2Bu8A6ByPqJTZCcDjH9SLlQSYNcR:pPEWTO51sHA6ByP/cDTclQD+

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      43428294fd339a6c66b4ba9af723593f386808db747f2b2ba7a0dc0117379171.exe

    • Size

      235KB

    • MD5

      85899a98881db336949f636dfd6f3d5b

    • SHA1

      6b59c57d02a4fa9f503e064585e6dba562c63a8f

    • SHA256

      43428294fd339a6c66b4ba9af723593f386808db747f2b2ba7a0dc0117379171

    • SHA512

      df506d5fd86ae2c7c906b328e25d99d0362eda272eb0a4381449a836c69acf999d5942fabfc4960529482a98b8c71f6eadec1ca153de2e2d4f8042c50bfa69db

    • SSDEEP

      3072:j72kySmwWaXJVCadJizA1KSB2sxhXM3tl64C5ARvc:j7236qahM3tLc

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistence

    • 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 Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Disable or Modify System Firewall

1
T1562.004

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks