Overview

overview

10

Static

static

3

6ab57929c7...0f.exe

windows7-x64

10

6ab57929c7...0f.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    6ab57929c7fb967824f95db9980c8b85cc6f112e2037b78d7e11e1760ee9870f

  • Size

    172KB

  • Sample

    241122-vv1ceszrek

  • MD5

    c795a6ac03536cab09f978bc5791a9b6

  • SHA1

    3e44e52011285caf407bf1a50175699cd4f3d673

  • SHA256

    6ab57929c7fb967824f95db9980c8b85cc6f112e2037b78d7e11e1760ee9870f

  • SHA512

    173fbfd25d69b2e2b5f2a8d7d814278a439d13ec6ec6c93a1b662126dd23295105eff9f05d1438f95863caa328a28a977a9aa85c68c09256e5a0b392e0adf2eb

  • SSDEEP

    3072:HTLTWx01rYIM9Nhrqzn150fkTCUuhGgrBXETBS:zLTz8ICNDfzUcGS

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      6ab57929c7fb967824f95db9980c8b85cc6f112e2037b78d7e11e1760ee9870f

    • Size

      172KB

    • MD5

      c795a6ac03536cab09f978bc5791a9b6

    • SHA1

      3e44e52011285caf407bf1a50175699cd4f3d673

    • SHA256

      6ab57929c7fb967824f95db9980c8b85cc6f112e2037b78d7e11e1760ee9870f

    • SHA512

      173fbfd25d69b2e2b5f2a8d7d814278a439d13ec6ec6c93a1b662126dd23295105eff9f05d1438f95863caa328a28a977a9aa85c68c09256e5a0b392e0adf2eb

    • SSDEEP

      3072:HTLTWx01rYIM9Nhrqzn150fkTCUuhGgrBXETBS:zLTz8ICNDfzUcGS

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • Tofsee

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

      trojantofsee

    • Tofsee family

      tofsee

    • 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