Overview

overview

10

Static

static

3

a7c2b8d081...de.exe

windows7-x64

10

a7c2b8d081...de.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    0e133075be0865484b62e1851cefdd946e2e03791c65d941ed11b59be9ab05f3

  • Size

    141KB

  • Sample

    240417-qg5mrsgh76

  • MD5

    cca32e481fca43089061de0f45a6e9b6

  • SHA1

    26274e2767ce71e16d396987c585e3771a23b4b4

  • SHA256

    0e133075be0865484b62e1851cefdd946e2e03791c65d941ed11b59be9ab05f3

  • SHA512

    1ea74892b31ea8da3fbb7c073452b3ad3fc44725edc95ceff9b6f0b0fb47f5ac45d38a5da05bdfebd371ce1b6443ffee01fd3e0077d62637596faceb3fc905b8

  • SSDEEP

    3072:dSXvpTxFrHIgblA7e7ciionbtyJFmGb25AhlNoHDIBuH:d2TxF7Ig6q5lbMJF9YAhboHDIB4

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      a7c2b8d081407da5d72f12eeef21c11674ff616c89be40f73f114c292c09e6de.exe

    • Size

      227KB

    • MD5

      1010b86bd744c31ecef5f5aeae5ca6df

    • SHA1

      79dbaab22a85e8a0c3124d39423da1ca24c358e8

    • SHA256

      a7c2b8d081407da5d72f12eeef21c11674ff616c89be40f73f114c292c09e6de

    • SHA512

      6823068623029c10aa0d833be8422b6d93663832d24298bd9811f7700bbc56dc5463fd75f12273e2168bac6784a16e735cc86cf0de8841e83c1befc75bdfd02d

    • SSDEEP

      3072:BG/VLLNVnlMoDjq0sg0lpb15L76ZhBUrIeGskK+KgPcf53whT5A/hTu:8Lh9ljdOlPB6tUrIK+zPcRaCpT

    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