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

    10f6b452781aec48a0f4498050be97f3c00397952081c79503be99d566689d79

  • Size

    145KB

  • Sample

    240417-rj3fvsbd37

  • MD5

    956b4126eec78139baa7b79a1bdda4fd

  • SHA1

    53f7758ec729951dd56c2381d224d5bcdc4d6b3c

  • SHA256

    10f6b452781aec48a0f4498050be97f3c00397952081c79503be99d566689d79

  • SHA512

    9fdfc4038a8b837a9b22fdce20be886c4085b4e96ca048035e434f1dea643da5210489dc03c62b126401438b3a5b318e82ece9bcf1f5643cb6575929b0c47cec

  • SSDEEP

    3072:vuVKsxtOcqPcc0i2sdxck4vYzgzqMgzPc15WAwuUj43Q/a5i4Zm7ieEJnvl:GxAnUPiVkv+t45WduUU3v5iH72Jnvl

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