Overview

overview

10

Static

static

3

4c09c87097...54.exe

windows7-x64

10

4c09c87097...54.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    0518877dfc35e38b1555f274b81db21a9607ea9735557bfd32b26430d49363bc

  • Size

    133KB

  • Sample

    240417-qvmzwabc9x

  • MD5

    9d554fade6705c14fbf8b094beb635d1

  • SHA1

    b4e1b07febbd0f390da92a9deb183d6684aa7309

  • SHA256

    0518877dfc35e38b1555f274b81db21a9607ea9735557bfd32b26430d49363bc

  • SHA512

    ea2fccc02dfd4061eb9741c8ff6fb7a8582d77616a91e72bc359543360a9c8fe7af675547136cda1ce475f110847fe5c1d041646ba5e8d271abf28cb8df2ad69

  • SSDEEP

    3072:L15YsWoMvV1LgBkJBMbVvA/GjcefKaxkTp6t:LvDSvvwkIbVaGfK6kpE

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      4c09c870971edffb8a06d14f0789d17f51522c5df43af48fe14ee926cf721354.exe

    • Size

      220KB

    • MD5

      06d5f0ada968c0a1640846c8023e9ee9

    • SHA1

      961c48464fc79febeca7994b80369004b87bc34b

    • SHA256

      4c09c870971edffb8a06d14f0789d17f51522c5df43af48fe14ee926cf721354

    • SHA512

      dcb31fd9a44b6216da80482db6d3ebc0ae76bd3679b6c243cb65aa06c359b3ec7a89dca9f9cf3f3387e1c51a0ba1042382304eb19ddfacc1c22b92be18abe6f8

    • SSDEEP

      6144:Vb/qTWJpjKTI1rFeB4jsVSfnLqS5ICk1hcGP:JxJtKTIpEBc6fP

    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