Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    150KB

  • Sample

    221127-twcr3sbd54

  • MD5

    2c7fef3be2816a8e7817857936d0b30d

  • SHA1

    244e5a9674d386c1c179532d02e775ec09fc85f5

  • SHA256

    9dd37088a9391d314eaf5b8c6ecfe7e64c07cfb7f86abb250b7d743478ca189b

  • SHA512

    f2211862335c0e6c5540af40fbcff688f7c643a771ea436126f367ac3cceb74352c6c2cbf2dbda45e809138e1ab1bac7f55832798a7dfb4b15139eb4b1a0819c

  • SSDEEP

    3072:M0QRwqrq5cmFhuOTJJv5K5z/r9I0yOZxcyBZyHWmHkNj6I5eaVX:OO51YiJO5zz9IkxRMHkNn5eaJ

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      150KB

    • MD5

      2c7fef3be2816a8e7817857936d0b30d

    • SHA1

      244e5a9674d386c1c179532d02e775ec09fc85f5

    • SHA256

      9dd37088a9391d314eaf5b8c6ecfe7e64c07cfb7f86abb250b7d743478ca189b

    • SHA512

      f2211862335c0e6c5540af40fbcff688f7c643a771ea436126f367ac3cceb74352c6c2cbf2dbda45e809138e1ab1bac7f55832798a7dfb4b15139eb4b1a0819c

    • SSDEEP

      3072:M0QRwqrq5cmFhuOTJJv5K5z/r9I0yOZxcyBZyHWmHkNj6I5eaVX:OO51YiJO5zz9IkxRMHkNn5eaJ

    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