Overview

overview

10

Static

static

3

1d4e2d006b...49.exe

windows7-x64

10

1d4e2d006b...49.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    1d4e2d006bff0bb6eb9cb7cf757b4003fd87386da931f844fede941868849749

  • Size

    267KB

  • Sample

    240418-x84ccach25

  • MD5

    6736700e3dfb47ac9beba3c2eff9e7ca

  • SHA1

    00d5f83f5bfd1bf889a0991882457db790c95c17

  • SHA256

    1d4e2d006bff0bb6eb9cb7cf757b4003fd87386da931f844fede941868849749

  • SHA512

    ffd04ada229530484d250ecba1c51b5175ac62dbdc872045c4b3426367c1545ee0eff9a90bba617d75f034d6e452e4a56ea753f7b0810b9268fefb41f55bdc5a

  • SSDEEP

    3072:7QOPm6aPQb9A3Hd1fWSol++S8/5QvstAj9gQ7HUjzNR4hT/ydzUtmMG/:Lm6aoiXd13olaesstABE4hCwtY/

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      1d4e2d006bff0bb6eb9cb7cf757b4003fd87386da931f844fede941868849749

    • Size

      267KB

    • MD5

      6736700e3dfb47ac9beba3c2eff9e7ca

    • SHA1

      00d5f83f5bfd1bf889a0991882457db790c95c17

    • SHA256

      1d4e2d006bff0bb6eb9cb7cf757b4003fd87386da931f844fede941868849749

    • SHA512

      ffd04ada229530484d250ecba1c51b5175ac62dbdc872045c4b3426367c1545ee0eff9a90bba617d75f034d6e452e4a56ea753f7b0810b9268fefb41f55bdc5a

    • SSDEEP

      3072:7QOPm6aPQb9A3Hd1fWSol++S8/5QvstAj9gQ7HUjzNR4hT/ydzUtmMG/:Lm6aoiXd13olaesstABE4hCwtY/

    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