Resubmissions

03-03-2021 18:50

210303-emgp3yg54a 10

General

  • Target

    5d72488940cfe69b1de945eb61239b3bcd5c4936f2f6a0faa901bfe5496a4a5c.exe

  • Size

    59KB

  • Sample

    210303-emgp3yg54a

  • MD5

    b18e59eed93e2a75cb5a124e5ff204a3

  • SHA1

    d61958ae12239551d464664e083c32d26c56f08c

  • SHA256

    5d72488940cfe69b1de945eb61239b3bcd5c4936f2f6a0faa901bfe5496a4a5c

  • SHA512

    20c0ecd8eedb23ef8f9ff76f488de5b54210cc19a1dd029f845fba2eec8c6603638d7f3bed82e7f55a5e2cd37c8139432a17fb44f9d7fd6870dc7d83c4c908ac

Malware Config

Targets

    • Target

      5d72488940cfe69b1de945eb61239b3bcd5c4936f2f6a0faa901bfe5496a4a5c.exe

    • Size

      59KB

    • MD5

      b18e59eed93e2a75cb5a124e5ff204a3

    • SHA1

      d61958ae12239551d464664e083c32d26c56f08c

    • SHA256

      5d72488940cfe69b1de945eb61239b3bcd5c4936f2f6a0faa901bfe5496a4a5c

    • SHA512

      20c0ecd8eedb23ef8f9ff76f488de5b54210cc19a1dd029f845fba2eec8c6603638d7f3bed82e7f55a5e2cd37c8139432a17fb44f9d7fd6870dc7d83c4c908ac

    • Registers COM server for autorun

    • Executes dropped EXE

    • Sets DLL path for service in the registry

    • Stops running service(s)

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

2
T1060

Modify Existing Service

1
T1031

Bootkit

1
T1067

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Impair Defenses

1
T1562

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Collection

Data from Local System

1
T1005

Impact

Service Stop

1
T1489

Tasks