Overview

overview

10

Static

static

3

0a0dd74c40...6f.exe

windows7-x64

10

0a0dd74c40...6f.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    0a0dd74c400e848fcf84d1217695746f.exe

  • Size

    313KB

  • Sample

    230508-bg8bbsgd69

  • MD5

    0a0dd74c400e848fcf84d1217695746f

  • SHA1

    87a35d0bceabe086f8bfb0b286dd678a9c93d35a

  • SHA256

    27e3ed0b63c7aaf1cdef8ff971fdf5c60fbf4507ef55343096f94ff6feb5f516

  • SHA512

    4bb6df5908a505f5d2a1871f86db31ec7883bf4cecd25ad5fcf4c3f7410fbede7487b12dad1e8442b83953510aad074ba04a89f067620c07d0acc89f1973454b

  • SSDEEP

    3072:8pXIEUbI/4pLTdJdBaLh6MbISGRiKT87mk/PGXZuZQ2y5gW5cF3PF1YWUqqT:MNU8ApLTd7BcpbIRR1sjFqpSdtS7

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      0a0dd74c400e848fcf84d1217695746f.exe

    • Size

      313KB

    • MD5

      0a0dd74c400e848fcf84d1217695746f

    • SHA1

      87a35d0bceabe086f8bfb0b286dd678a9c93d35a

    • SHA256

      27e3ed0b63c7aaf1cdef8ff971fdf5c60fbf4507ef55343096f94ff6feb5f516

    • SHA512

      4bb6df5908a505f5d2a1871f86db31ec7883bf4cecd25ad5fcf4c3f7410fbede7487b12dad1e8442b83953510aad074ba04a89f067620c07d0acc89f1973454b

    • SSDEEP

      3072:8pXIEUbI/4pLTdJdBaLh6MbISGRiKT87mk/PGXZuZQ2y5gW5cF3PF1YWUqqT:MNU8ApLTd7BcpbIRR1sjFqpSdtS7

    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 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

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks