Overview

overview

10

Static

static

f3c332a22d...7a.exe

windows7-x64

10

f3c332a22d...7a.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    f3c332a22d309ce984a097db89d800f5d8af9fbfcec9e96076a6fea6f5fd4f7a.exe

  • Size

    184KB

  • Sample

    221203-alhe2agh94

  • MD5

    2ddaf25c7e8b248d6b2f29e01b57a31f

  • SHA1

    0cc53cffa140f621a845ec4b27694f021f62279a

  • SHA256

    f3c332a22d309ce984a097db89d800f5d8af9fbfcec9e96076a6fea6f5fd4f7a

  • SHA512

    5c8b9bf106aedd69d578cd758c83190ae9cb366646eba5818371363c0cef08bc8c1ff14930083a6828f806fc527bf0dc7770309b16ec3d616219a210fc84e94e

  • SSDEEP

    3072:+3aGMPpSMeTJoG6+QW5ISOOyedlfcGPEfizxsr10Zw/WO4:/GMxMJoG6JHRu5+k

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      f3c332a22d309ce984a097db89d800f5d8af9fbfcec9e96076a6fea6f5fd4f7a.exe

    • Size

      184KB

    • MD5

      2ddaf25c7e8b248d6b2f29e01b57a31f

    • SHA1

      0cc53cffa140f621a845ec4b27694f021f62279a

    • SHA256

      f3c332a22d309ce984a097db89d800f5d8af9fbfcec9e96076a6fea6f5fd4f7a

    • SHA512

      5c8b9bf106aedd69d578cd758c83190ae9cb366646eba5818371363c0cef08bc8c1ff14930083a6828f806fc527bf0dc7770309b16ec3d616219a210fc84e94e

    • SSDEEP

      3072:+3aGMPpSMeTJoG6+QW5ISOOyedlfcGPEfizxsr10Zw/WO4:/GMxMJoG6JHRu5+k

    Score
    10/10
    tofseexmrigevasionminerpersistencetrojan

    • 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

    • Executes dropped EXE

    • 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

    • 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