Overview

overview

10

Static

static

015e6a91fc...32.exe

windows7_x64

10

015e6a91fc...32.exe

windows10-2004_x64

10

Resubmissions

17-06-2022 07:59

220617-jvvamabael 10

29-05-2022 16:27

220529-tx3pwsffh2 10

Sharing

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General

  • Target

    015e6a91fc2397216cdf2e0c0e7e4132

  • Size

    198KB

  • Sample

    220617-jvvamabael

  • MD5

    015e6a91fc2397216cdf2e0c0e7e4132

  • SHA1

    5f3a2877d37c6b0f392e42ac646af7afa0e45bcf

  • SHA256

    29aecf60d2b78688a409dd254eba6414e13fded9ebca1ac8beb624e252ae2f0c

  • SHA512

    d89c0bfc28f2ba1e697cf25e73c3196b8300be3f6b01355136fac523160671df1e84935f0b80d16db015b864a3d9d0aca2a13bf55071581a73202437d557e000

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      015e6a91fc2397216cdf2e0c0e7e4132

    • Size

      198KB

    • MD5

      015e6a91fc2397216cdf2e0c0e7e4132

    • SHA1

      5f3a2877d37c6b0f392e42ac646af7afa0e45bcf

    • SHA256

      29aecf60d2b78688a409dd254eba6414e13fded9ebca1ac8beb624e252ae2f0c

    • SHA512

      d89c0bfc28f2ba1e697cf25e73c3196b8300be3f6b01355136fac523160671df1e84935f0b80d16db015b864a3d9d0aca2a13bf55071581a73202437d557e000

    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