Overview

overview

10

Static

static

1

1cf2f9ca3c...18.exe

windows7-x64

10

1cf2f9ca3c...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    8ede678cf734084b01751c5d54f7fba3.bin

  • Size

    148KB

  • Sample

    230419-caaxxshd4z

  • MD5

    addea614d43201d3ca7f71d5d1b4f762

  • SHA1

    6a67517a1c05e63407ad2e8593c1712fa8bce076

  • SHA256

    71701f86d93f4ceee8e0bed7025bb3aede5fb789426b1e24b23360598ecee911

  • SHA512

    ffc5c0bb5cc5a518c981a8ee06cf5d72c5854d4c807a7ad7b2135bb8b7f5cc0b207f7a190e91980d2a3b12298cbc9f312082671c24b72f84d01c24c4c3bece02

  • SSDEEP

    3072:7Dz/y4IRGEb9K3TBXaWVO/qzu4Y7fXDp7o85D/FB:7ARxZK3TBvV3Y7fzpM81

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      1cf2f9ca3cc70c2919ba016a0166a95c81e1a09e95aaa5efb74c17e2a211c218.exe

    • Size

      212KB

    • MD5

      8ede678cf734084b01751c5d54f7fba3

    • SHA1

      a706bed4987a37e4ee7367a28c144a57264c292b

    • SHA256

      1cf2f9ca3cc70c2919ba016a0166a95c81e1a09e95aaa5efb74c17e2a211c218

    • SHA512

      a189411e8de914453ed6e96cee2d99395f36caf89f75fd738f53cf62fd827ecd34cee1ad10761db77a99b374d4003645542b446aaec51887d3228da5473b7135

    • SSDEEP

      3072:Q/w2vKhLFzNxTvoecRDZFuxnpxyNmH25p062a3F5+mI7iMD:CWLFzN1y/Ytpt23V2a2J7iM

    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