Overview

overview

10

Static

static

3f7bb036ee...17.exe

windows7_x64

10

3f7bb036ee...17.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    3f7bb036eef312a9c1fca60105f1b87235dc8b14d617e415f95a7043f9efe917

  • Size

    137KB

  • Sample

    220701-bt8gvsgaf3

  • MD5

    708dc91ee0b8a61718e9991a1396b23f

  • SHA1

    d7bd310fd1a8ba9500c00b4e7626aa780552d26c

  • SHA256

    3f7bb036eef312a9c1fca60105f1b87235dc8b14d617e415f95a7043f9efe917

  • SHA512

    569e90713153b268f2cdcb12e78156facdcda6e936ae45e0032d317efe9d8d442d53335ab7e37514cb800d9885d5c575209b2a64e098e69c4c4db20f927f7278

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      3f7bb036eef312a9c1fca60105f1b87235dc8b14d617e415f95a7043f9efe917

    • Size

      137KB

    • MD5

      708dc91ee0b8a61718e9991a1396b23f

    • SHA1

      d7bd310fd1a8ba9500c00b4e7626aa780552d26c

    • SHA256

      3f7bb036eef312a9c1fca60105f1b87235dc8b14d617e415f95a7043f9efe917

    • SHA512

      569e90713153b268f2cdcb12e78156facdcda6e936ae45e0032d317efe9d8d442d53335ab7e37514cb800d9885d5c575209b2a64e098e69c4c4db20f927f7278

    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