Overview

overview

10

Static

static

10

ae30f8849f...ba.exe

windows7-x64

10

ae30f8849f...ba.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    ae30f8849f76c8517dbb9922a570efd8b2a502292df7f768bfdeebab92aa52ba

  • Size

    71KB

  • Sample

    240908-bnwk4sydng

  • MD5

    26ebbf2fff571c90b3af42785d65db3a

  • SHA1

    20ddf85b7a5d92dd7e41fd22237556460f56e98b

  • SHA256

    ae30f8849f76c8517dbb9922a570efd8b2a502292df7f768bfdeebab92aa52ba

  • SHA512

    71b444041b967a33a89cf6c31090e86045f5f683dc577d1eae2696cbdae569e70a061968c1f9ba36d9515be14e2369020c74a2ea2ed2798a77778dfc06c050d9

  • SSDEEP

    1536:Dkes21VCy1nTxSYg3CXTjFWL9SdpIHUc:DDVCyFxSYACXF/pI0

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      ae30f8849f76c8517dbb9922a570efd8b2a502292df7f768bfdeebab92aa52ba

    • Size

      71KB

    • MD5

      26ebbf2fff571c90b3af42785d65db3a

    • SHA1

      20ddf85b7a5d92dd7e41fd22237556460f56e98b

    • SHA256

      ae30f8849f76c8517dbb9922a570efd8b2a502292df7f768bfdeebab92aa52ba

    • SHA512

      71b444041b967a33a89cf6c31090e86045f5f683dc577d1eae2696cbdae569e70a061968c1f9ba36d9515be14e2369020c74a2ea2ed2798a77778dfc06c050d9

    • SSDEEP

      1536:Dkes21VCy1nTxSYg3CXTjFWL9SdpIHUc:DDVCyFxSYACXF/pI0

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • 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 Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks