Overview

overview

10

Static

static

3

18643a9a6e...07.exe

windows7-x64

10

18643a9a6e...07.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    dd18a455e9d700d656ce6965cee1a068.bin

  • Size

    171KB

  • Sample

    230507-jea7tagc2x

  • MD5

    32441e5a27867b5b51446ac767d6f62f

  • SHA1

    260027f41139872d0a28f9efdc8e9b10e988f7ec

  • SHA256

    628c1bfb9195b74c5a9846331f42886bc78aed36ac4049d010fe62fe4347f7ab

  • SHA512

    c110fc4e9b553b8809dcaae3cc5bdf191f4c0ffa2459886dd0244418d0f51acd2fc0517b507c3ec22d9d52394d83d0947d68699dda33604d0d28a4a69f6ed97b

  • SSDEEP

    3072:AOFU3+DtYF7Fxfd6bhoqLmMnxyIRKtW4pmuY53ujFB7i8pG1SscixxpPQJCEM1Y/:XUuZYxF1IbCCjK04pmvou8sYsdxx5fW/

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      18643a9a6e4b61e967e428fadb2d4bb52dfed8a949b4a39cb461c2e3a8e6d207.exe

    • Size

      303KB

    • MD5

      dd18a455e9d700d656ce6965cee1a068

    • SHA1

      bb23d970e98a6a6ec178fc6c9c82689b3e92ee7c

    • SHA256

      18643a9a6e4b61e967e428fadb2d4bb52dfed8a949b4a39cb461c2e3a8e6d207

    • SHA512

      71dc5ce080f2f95f2b68bcd135cfbbb9d020e10f58972b4f90ac98a3794f7791857139d45f417d127182bb26caca996a94c95008f2fc0ccc8a3c1b16dd07b531

    • SSDEEP

      3072:duhpDHOnUv1WfCBuL4IdkVDJNhA+GHRIBiSp5z5DT4zknffhd+OH:shpDH9vEfQQrdkB7Fi05ykn3v+y

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • 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

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks