Overview

overview

10

Static

static

5b115ea109...e6.exe

windows7-x64

10

5b115ea109...e6.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    5b115ea109dbf8e544900233d6147a179b4909be5bcf1159abb594ad3e272ce6

  • Size

    113KB

  • Sample

    220802-bkyw3acgg2

  • MD5

    45b3273f12bc83726743d90f4d62e100

  • SHA1

    85da9c8630b48fca68849323eb469857fb93829a

  • SHA256

    5b115ea109dbf8e544900233d6147a179b4909be5bcf1159abb594ad3e272ce6

  • SHA512

    e19aca6b4095b18b8d734b8ee4ad39b6a574689d59726f63db28b20be52a2815091ef0b87c64fdaa37c14c0818e93ed5cfe0f333b646347e9eef1d72c768be4d

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      5b115ea109dbf8e544900233d6147a179b4909be5bcf1159abb594ad3e272ce6

    • Size

      113KB

    • MD5

      45b3273f12bc83726743d90f4d62e100

    • SHA1

      85da9c8630b48fca68849323eb469857fb93829a

    • SHA256

      5b115ea109dbf8e544900233d6147a179b4909be5bcf1159abb594ad3e272ce6

    • SHA512

      e19aca6b4095b18b8d734b8ee4ad39b6a574689d59726f63db28b20be52a2815091ef0b87c64fdaa37c14c0818e93ed5cfe0f333b646347e9eef1d72c768be4d

    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

    • 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

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks