Overview

overview

10

Static

static

3

e261ca1093...6b.exe

windows7-x64

10

e261ca1093...6b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    e261ca109358b3244e32550fa951a8a6e7d5150dd2c67c74748902da2ffbca6b

  • Size

    170KB

  • Sample

    240718-yq8psaxbnf

  • MD5

    4415e2bbc806aab120371e1b2aed148e

  • SHA1

    647383818d35b8505b6783eefc475025eb5d2460

  • SHA256

    e261ca109358b3244e32550fa951a8a6e7d5150dd2c67c74748902da2ffbca6b

  • SHA512

    68509381cec5375f3e990e5309ab91fc02677f5808aebe15a184668b2ae617942b6f00a96018a9a5a47e4094be8e37d3fa0e6faba45651997d01e1f6ce54b286

  • SSDEEP

    3072:E1UmLHri3HXt+TEkpkZLUuRjFD8RG1vrxDd5sBpYFBJBXETBS:KLL43t+TjSZLl5IRzYFpGS

Score
10/10
tofseeevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      e261ca109358b3244e32550fa951a8a6e7d5150dd2c67c74748902da2ffbca6b

    • Size

      170KB

    • MD5

      4415e2bbc806aab120371e1b2aed148e

    • SHA1

      647383818d35b8505b6783eefc475025eb5d2460

    • SHA256

      e261ca109358b3244e32550fa951a8a6e7d5150dd2c67c74748902da2ffbca6b

    • SHA512

      68509381cec5375f3e990e5309ab91fc02677f5808aebe15a184668b2ae617942b6f00a96018a9a5a47e4094be8e37d3fa0e6faba45651997d01e1f6ce54b286

    • SSDEEP

      3072:E1UmLHri3HXt+TEkpkZLUuRjFD8RG1vrxDd5sBpYFBJBXETBS:KLL43t+TjSZLl5IRzYFpGS

    Score
    10/10
    tofseeevasionexecutionpersistenceprivilege_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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks