Overview

overview

10

Static

static

3

e78128c207...e8.exe

windows7-x64

10

e78128c207...e8.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    4535164ed531ecfc1624e721a866cd5997f95ef709ec8220d71133f88c7509ec

  • Size

    166KB

  • Sample

    240417-qs14qabb9y

  • MD5

    d10283b822744e280adba8b71c56a586

  • SHA1

    851b39aad2c810cffa8dc639c9e5dae1a5120f24

  • SHA256

    4535164ed531ecfc1624e721a866cd5997f95ef709ec8220d71133f88c7509ec

  • SHA512

    a231423f17d4a3ca484bf1a455286140b3c9f54ba01a2ce351807ca51f4494f9793d07a7da30a9e1d79e958fb2f7a2fdcfacec7790e5955df2c0ffa57dcfc332

  • SSDEEP

    3072:cBaaEGOd8DYLuTTVx2LkcSKVI5LOe3jlP9Lf//TMdTHQ1u2pyWqTIcmmvDxGJU7z:GEGOOx2LfS6IpOgRt/TMO1ux1DxGJUy2

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      e78128c2073dd834976128e47d671edf32ce7e86820bec6b1d1837d58cd7b4e8.exe

    • Size

      307KB

    • MD5

      f4eb02f3a2587ba66f1036cae85e4770

    • SHA1

      e8ed42963f946e33ec99af067eeabf0412436b62

    • SHA256

      e78128c2073dd834976128e47d671edf32ce7e86820bec6b1d1837d58cd7b4e8

    • SHA512

      6cfc6f6a07c5e36d678f9999ca9377549843f81cef9f23e3819c0dcde7d8f68668469c65c9690a6e8139c216f2b79058dc5255f5f8efa1def6bd7be2919e6719

    • SSDEEP

      3072:TTgg3xOPn/SpLwMMrcDPXDzGkP2NakC5p+WrjxxMu63jXdo:gOOf/mLwMMrcDPXDzdvN+WvxajX

    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