Overview

overview

10

Static

static

3

b984128113...ad.exe

windows7-x64

10

b984128113...ad.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    17a01d32407a790eec38895f972fa31040b5fe55bc5d8f39fc5c6bc58658cc68

  • Size

    169KB

  • Sample

    240417-qqqj7sba6s

  • MD5

    ae68531e41f47f7656edde1971c94ef9

  • SHA1

    c951b2fa3f92a43d72d116daf1941ab9379725b6

  • SHA256

    17a01d32407a790eec38895f972fa31040b5fe55bc5d8f39fc5c6bc58658cc68

  • SHA512

    56a0471a9f829474e1daebc8e58cc54a30d1ad5847b71cd7d2a30fd3a5eda0a95f1b525e4a48e8ab0e0b0aa4c09495d15ddfbee43c0e188c4f4c170267a079a1

  • SSDEEP

    3072:656RRPNOghGge5ZRWlVcfdxC7zzjjyQXLT6wZSAtU85JxUQtewfOhFWc:zP4IGge5ylVZ7f/Z7T/Zw85MQMwEWc

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      b984128113ff555edf24f086dcec400c697413f9095c8510da1058a98a2cc4ad.exe

    • Size

      302KB

    • MD5

      9f9e5f55dc8cb3809e24b14fb8f9c27d

    • SHA1

      cfed2d1d3e44d8ad3d0cade2ca83f105949aa952

    • SHA256

      b984128113ff555edf24f086dcec400c697413f9095c8510da1058a98a2cc4ad

    • SHA512

      5e8acc5af13c952fd1f02f88d2acf5314bd98216d51f340f1e0163551c27c44267391bd82ef8d72a214ee3d28803f7c08ec2ca2a84f0c599bbe17e9d955d56b6

    • SSDEEP

      6144:VdUtDjcT/lUmHvYBLDTOGc/sh4m18vMm48IRi7:rq3w/6mHvYBSGosym1gMv8

    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

    • 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 Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Disable or Modify System Firewall

1
T1562.004

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks