Overview

overview

10

Static

static

3

9dc0085f64...d1.exe

windows7-x64

10

9dc0085f64...d1.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    738632816e687b5d9ba550e5b64de5fdbba1736e4dcaa11fd15f6cc7fe88c078

  • Size

    145KB

  • Sample

    240417-qtexwabc4t

  • MD5

    129280f72ecd10b59479f21728f1c413

  • SHA1

    1d5bc8632c1dde68cb16f926282d95a437bf46b8

  • SHA256

    738632816e687b5d9ba550e5b64de5fdbba1736e4dcaa11fd15f6cc7fe88c078

  • SHA512

    897f7e9f9d35132af153abdc94a6fc494cf6bf08cd486021f2d9a847569ea73cf63c1e15fc9fa6545e1406aa6e31925b1e87e4e9f0c90b94ef51ef054e7ce0e5

  • SSDEEP

    3072:QH0rjFDr37K9Hrbma3jlPbcYvrhWdUCF88h5ie:xrpH7K1rB3jlDcYvre8gie

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      9dc0085f64473ca82753f59552bae76c64b5165e72899d727cd18f4d1afbd9d1.exe

    • Size

      233KB

    • MD5

      e1fd44ce08b0383dc59e732bb0b1f2d9

    • SHA1

      70dc0dba88f5b4d02f554627ec8fce32b9237fcc

    • SHA256

      9dc0085f64473ca82753f59552bae76c64b5165e72899d727cd18f4d1afbd9d1

    • SHA512

      7db8ae6bbead6c8603fda377b70cf05f793a795ca29cef50a97c6df148c4ecf5677880177016d7e65e51b204bbeed22b07e31f9d021305ea7a350b7130121d0d

    • SSDEEP

      3072:TcYelBc/ctFykDqPogVwsvhQNW3k1QxCJ18YcRfIBvd4rm5qe4EY3jXO9ZJwVQk:TcdBJ+PojEk1QEJq1FIBv74E2OTF

    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