Overview

overview

10

Static

static

3

668a73171b...a2.exe

windows7-x64

10

668a73171b...a2.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    f8df432779abcda0e118d44dc6dde5c7.bin

  • Size

    142KB

  • Sample

    230517-ccdrladd66

  • MD5

    7b577303d43c718237af3551eddb53c2

  • SHA1

    a139f435990e64f141f50689aeca4b8c748eff0d

  • SHA256

    aa3d3a4c3cd6b8252708a6dd548b45ff2586420ea6a995ada9ff6990788b141a

  • SHA512

    a19cca5a0ff2d6e52e75af91d5b5c882cd9f180349f9829b99e559d9c8be8a50911090eb85bbb4da0a7a1726e8a3ee96e9d1e292172fbc52470f62e36d175cb4

  • SSDEEP

    3072:npYZCiGTfvUYwcR4oVqPJ9eMPs9vhiyKpw2eYUjX19ARAkHDzycuu:pYgfc5Xoszt0JYygw2eYG9ANxp

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      668a73171bcfb225ce6748ef6108fa8bf9b02befb5ba5f392cdcff67926d78a2.exe

    • Size

      234KB

    • MD5

      f8df432779abcda0e118d44dc6dde5c7

    • SHA1

      2574314f96737d4a909246b06f6d0904b1b0e6f6

    • SHA256

      668a73171bcfb225ce6748ef6108fa8bf9b02befb5ba5f392cdcff67926d78a2

    • SHA512

      43974649ae90e164b8a17288c8c8b249dcdbac0a0c4fc9cdac70edbea455f880be7642e03c33e882e3a0bfaeccca46636398a604867451be52e059fc5fb1e75f

    • SSDEEP

      3072:5fPQrqA+LychM1+ziXtcsM/RHbyp+EpsVNg0cqF2Oq5pqIyYnAZ81MZ:mE1MOYcb/jxBUOqptZnAa1MZ

    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

    • 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