General

  • Target

    e39e047850594b792efd9c8ad328c9c32e15c77e9b4576d1c664703c7dcc8fdc.zip

  • Size

    5.9MB

  • Sample

    230321-rxstksdb8x

  • MD5

    20626c175025b418b5a199e5c0020b97

  • SHA1

    43e199e5a7cbf63f9b11e9f19ae88e16e2f2baef

  • SHA256

    c7683b1eae53fe74c2c00c0e19472ec5d1d8c786bd17e4d340807c5b7577a533

  • SHA512

    c53d978ac2bc33316735b04a7d6b43ab8fbccd16d14cd66af776bbf1d460d7ade49892242b7849194a0bb3ca5856a63a0204fa0a2f0440ac8504619554435d93

  • SSDEEP

    98304:hh0+cM3yhxvxiqETimikBiyC0aw9yHEoQpxO6uGyO49Xj:hO+cMWxiqETdBi30aw99o4xO6uGyXj

Malware Config

Targets

    • Target

      e39e047850594b792efd9c8ad328c9c32e15c77e9b4576d1c664703c7dcc8fdc.exe

    • Size

      6.3MB

    • MD5

      5e62ce2c758268030b2e673252c7c199

    • SHA1

      80963e2c068c9b75bec6214e817435cbba17bbe0

    • SHA256

      e39e047850594b792efd9c8ad328c9c32e15c77e9b4576d1c664703c7dcc8fdc

    • SHA512

      93493a9e5f89f616eb3449bbb41c9027e3df69af6250f121ec993e22250265a5a774d4d8a6f9d08a06129278a0c16434c5d28a73d751f25af78e2d5c02459eaa

    • SSDEEP

      98304:WI9ZCfZk3RIGgWhMIjVRr7SaB/JjNv+w3S+/KWpnMgcKrVuOtGTIDzO+kA6w2:WQoZ1zWhMIpBdJp+XGKinMg3u9MzeO2

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Tasks