Overview

overview

10

Static

static

3

dca04b076e...16.exe

windows7-x64

10

dca04b076e...16.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    dca04b076eeee5ac2dd81bd4e3f7c84aa0edbbbf322ab6b439e032de8c80da16

  • Size

    10.3MB

  • Sample

    240511-j625lsah76

  • MD5

    b96ffab0c7c58d79f2742801680212b6

  • SHA1

    41ca4ba9c493524125122672822f5d41b2cffcd3

  • SHA256

    dca04b076eeee5ac2dd81bd4e3f7c84aa0edbbbf322ab6b439e032de8c80da16

  • SHA512

    92df028c8e10ce12f621eb28e2b189b37dc9c097bbb087195a8c3e1d15e0283bde026215c0172dccb9a8d5ddc14e1b761a08d632c8ef7ee67112f976ba55784e

  • SSDEEP

    3072:CcSalqHSwBWbacDEgFAdpW1Z8AZLJDAM/a9s/a9s/a9s/a9s/a9s/a9s/a9s/a9F:0aYlWeeEucpCZZZq

Score
10/10
tofseeevasionexecutionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      dca04b076eeee5ac2dd81bd4e3f7c84aa0edbbbf322ab6b439e032de8c80da16

    • Size

      10.3MB

    • MD5

      b96ffab0c7c58d79f2742801680212b6

    • SHA1

      41ca4ba9c493524125122672822f5d41b2cffcd3

    • SHA256

      dca04b076eeee5ac2dd81bd4e3f7c84aa0edbbbf322ab6b439e032de8c80da16

    • SHA512

      92df028c8e10ce12f621eb28e2b189b37dc9c097bbb087195a8c3e1d15e0283bde026215c0172dccb9a8d5ddc14e1b761a08d632c8ef7ee67112f976ba55784e

    • SSDEEP

      3072:CcSalqHSwBWbacDEgFAdpW1Z8AZLJDAM/a9s/a9s/a9s/a9s/a9s/a9s/a9s/a9F:0aYlWeeEucpCZZZq

    Score
    10/10
    tofseeevasionexecutionpersistencetrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistenceexecution

    • 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

System Services

1
T1569

Service Execution

1
T1569.002

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