Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file

  • Size

    320KB

  • Sample

    230206-tm2d3seg58

  • MD5

    2a9f1a6f6f5102b53fbafbeca0ebc1a7

  • SHA1

    7e9d0eeaf3cba6b9fe49a7cde5fc60791b935bcf

  • SHA256

    5ab363da467713750238499b00e0acdbffd91ace0c10649cb17b4b244ae0ab3f

  • SHA512

    6ef2e9d0e2ca905371aee62be69e985ad6197313b64c775f152ea2c64911bdb19c5c3384faa3848327ed668c3fde29e30566cbce53b50da4751ad30a5577a923

  • SSDEEP

    3072:JGz4wiIL5Aw2R6E4jDAoBu15trOFR7wBjBP93gTW3YvjC1//+sxA7rztLzMsj:WNLywJE4q5tr+wabvjClRk9Ltj

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file

    • Size

      320KB

    • MD5

      2a9f1a6f6f5102b53fbafbeca0ebc1a7

    • SHA1

      7e9d0eeaf3cba6b9fe49a7cde5fc60791b935bcf

    • SHA256

      5ab363da467713750238499b00e0acdbffd91ace0c10649cb17b4b244ae0ab3f

    • SHA512

      6ef2e9d0e2ca905371aee62be69e985ad6197313b64c775f152ea2c64911bdb19c5c3384faa3848327ed668c3fde29e30566cbce53b50da4751ad30a5577a923

    • SSDEEP

      3072:JGz4wiIL5Aw2R6E4jDAoBu15trOFR7wBjBP93gTW3YvjC1//+sxA7rztLzMsj:WNLywJE4q5tr+wabvjClRk9Ltj

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • Tofsee

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

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

      minerxmrig

    • XMRig Miner payload

      miner

    • 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