Overview

overview

10

Static

static

3

03b9615374...72.exe

windows7-x64

10

03b9615374...72.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.zip

  • Size

    179KB

  • Sample

    230427-v28x5sah91

  • MD5

    fd0b50b7c6a5da127b612a3fd3c2b1c7

  • SHA1

    59929e992079259c2eba6cbb66d7044797991003

  • SHA256

    0bbf12439919917796d742e890bb8e3f13aa79f64856c0a9f18cbc8a31ff7b81

  • SHA512

    5f17bd7dd72cec3c8d04454b4f06180e2e1abe662f63d76e9e96e1c2c0e2973074bb10c6608ce3d4542f721c688e9e1faad6674e87a67cba44541358a15990a1

  • SSDEEP

    3072:zJOfsyozOVSUNryoekRPMWSg9che3RzSd9c7+t86FGSSV6p6Acy2qxPzVfef4lT:1Ob6OgGxRE/+VS7Jt1uyHxxfHlT

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe

    • Size

      299KB

    • MD5

      45745cc2b7e41ad2e663e73112e1d4eb

    • SHA1

      27a58c48caedeb235a046e8657c9f05df829a585

    • SHA256

      03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72

    • SHA512

      d40f981d7d7bdb8f60db4746f27cb7d4639b181f98e7c1664a8d8c37af95353491bb80a7c75557379e9138256e2398ac90b5e48d02665f11024b54a7d471f805

    • SSDEEP

      6144:C/SlLSuD8yVmbWuM3XPbRO0uQj9JKO48a:CKlG/ykipXI0ljK8

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • 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