Overview

overview

10

Static

static

be9ef8bbf7...26.exe

windows7-x64

10

be9ef8bbf7...26.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    be9ef8bbf759fa8d9ddb5cbf60890e5277b606c703db8fe2f6633152b67fcd26.exe

  • Size

    185KB

  • Sample

    221203-c35b8sbc7v

  • MD5

    75c87170e12fc96072edcff9d79c2195

  • SHA1

    f840dd1d16e1b5929762126cc6e94eae3de48700

  • SHA256

    be9ef8bbf759fa8d9ddb5cbf60890e5277b606c703db8fe2f6633152b67fcd26

  • SHA512

    b964951a6a5b9e495f64e8855078cb763f19a7b733861bf32754efd20298ab4daeb6bcd6b0a3cffe0a68681b68912cf2e197a7e24741dbe4f957fd8ef3173177

  • SSDEEP

    3072:iIMtwRH0XXHQ8RjuuuMn5m0ibhaUhzyy0xUif4K2lFKRw+6ghuvmF:vMS8RjuuiJyyaUn+MB

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      be9ef8bbf759fa8d9ddb5cbf60890e5277b606c703db8fe2f6633152b67fcd26.exe

    • Size

      185KB

    • MD5

      75c87170e12fc96072edcff9d79c2195

    • SHA1

      f840dd1d16e1b5929762126cc6e94eae3de48700

    • SHA256

      be9ef8bbf759fa8d9ddb5cbf60890e5277b606c703db8fe2f6633152b67fcd26

    • SHA512

      b964951a6a5b9e495f64e8855078cb763f19a7b733861bf32754efd20298ab4daeb6bcd6b0a3cffe0a68681b68912cf2e197a7e24741dbe4f957fd8ef3173177

    • SSDEEP

      3072:iIMtwRH0XXHQ8RjuuuMn5m0ibhaUhzyy0xUif4K2lFKRw+6ghuvmF:vMS8RjuuiJyyaUn+MB

    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