Overview

overview

10

Static

static

Bolbi.vbs

windows7_x64

10

Bolbi.vbs

windows10-2004_x64

10

Sharing

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General

  • Target

    79dc113a4194e48e01b39d39156ce6b3bd50e02a5b07c1e1f40dd6c4b4cea967

  • Size

    5KB

  • Sample

    220521-psmewsbbdn

  • MD5

    3d83b9debba178eca1ba8fce39e15f7c

  • SHA1

    9839eade0225a2f803cb539ca4f8237aed2e2040

  • SHA256

    79dc113a4194e48e01b39d39156ce6b3bd50e02a5b07c1e1f40dd6c4b4cea967

  • SHA512

    071ed4215873624fb9d2796d82bda6270928ab38d27d963c7c00ee300f9cb0390480ab67495abce0c8dd408bf3ab697f8e77efbbe2ad6cf32d9913e03e6f1671

Score
10/10
discoveryevasionexploitpersistenceransomwaretrojan

Malware Config

Targets

    • Target

      Bolbi.vbs

    • Size

      46KB

    • MD5

      99ec3237394257cb0b5c24affe458f48

    • SHA1

      5300e68423da9712280e601b51622c4b567a23a4

    • SHA256

      ec17f950f6ee9c0c237d93bc0b766aa6e2ab458c70320b534212043128177b51

    • SHA512

      af2394d18f672def6d5d7081def759093759205aac0390ca03591c58c15a02e463a68b583b6fc28ef1368922b4bd5f9072d570ee97a955250a478cdb093500cb

    Score
    10/10
    discoveryevasionexploitpersistenceransomwaretrojan

    • UAC bypass

      evasiontrojan

    • Blocklisted process makes network request

    • Disables cmd.exe use via registry modification

      evasion

    • Modifies Installed Components in the registry

      persistence

    • Possible privilege escalation attempt

      exploit

    • Sets file execution options in registry

      persistence

    • Checks computer location settings

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

    • Modifies file permissions

      discovery

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

3
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

6
T1112

File Permissions Modification

1
T1222

Credential Access

Discovery

Query Registry

4
T1012

System Information Discovery

6
T1082

Peripheral Device Discovery

2
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Defacement

1
T1491

Tasks