Resubmissions

20-05-2022 13:36

220520-qwbm8shbal 8

20-05-2022 13:34

220520-qvfwkaebb4 1

General

  • Target

    kaspersky4win202121.6.7.351en_33704.exe

  • Size

    3.6MB

  • Sample

    220520-qwbm8shbal

  • MD5

    d22579c4d6f351c59ad338e69bda18ba

  • SHA1

    7f2c6cfdbb9b536d9bced67db491c293c153b470

  • SHA256

    448a4c6974bdd870938875f1123295230cbeff6540dbb4f2c4836778e2118773

  • SHA512

    c5b34d6efef8278cc71d39f5730c412a0d9b07c9d2790eaada6b5a37022aabd460362fb531680e2ec8383693fe5ee7b669138e9d25043fde92b2c6e5ea17b1f7

Malware Config

Targets

    • Target

      kaspersky4win202121.6.7.351en_33704.exe

    • Size

      3.6MB

    • MD5

      d22579c4d6f351c59ad338e69bda18ba

    • SHA1

      7f2c6cfdbb9b536d9bced67db491c293c153b470

    • SHA256

      448a4c6974bdd870938875f1123295230cbeff6540dbb4f2c4836778e2118773

    • SHA512

      c5b34d6efef8278cc71d39f5730c412a0d9b07c9d2790eaada6b5a37022aabd460362fb531680e2ec8383693fe5ee7b669138e9d25043fde92b2c6e5ea17b1f7

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Enumerates connected drives

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

Query Registry

4
T1012

System Information Discovery

5
T1082

Security Software Discovery

1
T1063

Peripheral Device Discovery

2
T1120

Tasks