Overview

overview

10

Static

static

b44b9f4497...d9.exe

windows7-x64

10

b44b9f4497...d9.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b44b9f4497332c165effe7e5aebbe4d9.exe

  • Size

    197KB

  • Sample

    220925-crwwqaebem

  • MD5

    b44b9f4497332c165effe7e5aebbe4d9

  • SHA1

    2691cd88c4ae2c351cd292a551da798f6023440e

  • SHA256

    6f5f412f4100c88ca174a6c35bb1c0e91b366782ac87ecd4751d95329941e818

  • SHA512

    cf9cd66677ba92618a646a959efb4603d5c2ff2aa808b848be6215e976aa7e4686723963970c87a4d021c9b82fe675d201837cf54d99750f88e29cf7f8643cbf

  • SSDEEP

    3072:Wiz4MyLvL4klKN51fIR6BtbV9AZEbyeWyfElB1X/PkkXx:kLvblSh7oqbrEN

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      b44b9f4497332c165effe7e5aebbe4d9.exe

    • Size

      197KB

    • MD5

      b44b9f4497332c165effe7e5aebbe4d9

    • SHA1

      2691cd88c4ae2c351cd292a551da798f6023440e

    • SHA256

      6f5f412f4100c88ca174a6c35bb1c0e91b366782ac87ecd4751d95329941e818

    • SHA512

      cf9cd66677ba92618a646a959efb4603d5c2ff2aa808b848be6215e976aa7e4686723963970c87a4d021c9b82fe675d201837cf54d99750f88e29cf7f8643cbf

    • SSDEEP

      3072:Wiz4MyLvL4klKN51fIR6BtbV9AZEbyeWyfElB1X/PkkXx:kLvblSh7oqbrEN

    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