Overview

overview

10

Static

static

820b43708e...2b.exe

windows7-x64

10

820b43708e...2b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    820b43708e064c1a6eb1eeb411b011e900fcd162afdd55d077ef619777a9d12b

  • Size

    10.2MB

  • Sample

    220719-ky6nhaaba5

  • MD5

    1e8fbe02f284b3c2e591e29f1e1de377

  • SHA1

    27750d8df6cacbce285525556e00579b67ace994

  • SHA256

    820b43708e064c1a6eb1eeb411b011e900fcd162afdd55d077ef619777a9d12b

  • SHA512

    59b8ed39fab69bcac36a07d2116c893e215759218b98e61c1955874ba84954e5f5f23289b7ee7c57b9b10e12cc9efe02515760eac819b4e0ce129bb11ef92322

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Targets

    • Target

      820b43708e064c1a6eb1eeb411b011e900fcd162afdd55d077ef619777a9d12b

    • Size

      10.2MB

    • MD5

      1e8fbe02f284b3c2e591e29f1e1de377

    • SHA1

      27750d8df6cacbce285525556e00579b67ace994

    • SHA256

      820b43708e064c1a6eb1eeb411b011e900fcd162afdd55d077ef619777a9d12b

    • SHA512

      59b8ed39fab69bcac36a07d2116c893e215759218b98e61c1955874ba84954e5f5f23289b7ee7c57b9b10e12cc9efe02515760eac819b4e0ce129bb11ef92322

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • Creates new service(s)

      persistence

    • Executes dropped EXE

    • 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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks