General

  • Target

    7752586221.zip

  • Size

    216KB

  • Sample

    220729-mqf4zsgfc9

  • MD5

    b691d84be698502cfbbe83964ae21532

  • SHA1

    de96db60f0dbfd774ee8d9e9bd4db6ac50270ae0

  • SHA256

    bf32d8eacf9b5dbaba44bd0992359c7901c732c97350e047759aa2054a968725

  • SHA512

    2138d34efe2fe176b23d9a8348dcb10d724cd63a10edc377889269b1d266ef32cbd1e599c6a358463dff71f67c4c49b1d69cbc5f070ce2f5f506d5bb0b8143f5

Malware Config

Extracted

Family

tofsee

C2

mubrikych.top

oxxyfix.xyz

Targets

    • Target

      519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd

    • Size

      11.6MB

    • MD5

      ca48c2a5c3d617e0538e0baadaa23bc7

    • SHA1

      42936532aa66b923d389a496352e7494bdd8ba23

    • SHA256

      519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd

    • SHA512

      79966f4ee83d1f2ffaaaffe2590375ea26c5ef1c42bbae50727ddf561d98a0d2928fb332ae568fec02da3140f17b1a6f1e1ca77cdc4ae0fd8d1bd663bc0afefe

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

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

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks