83f51a31a3b9ed0a4087aca907befdeb

General
Target

83f51a31a3b9ed0a4087aca907befdeb

Size

835KB

Sample

210915-hqehyadahk

Score
10 /10
MD5

83f51a31a3b9ed0a4087aca907befdeb

SHA1

f3805488954d7bdb7b1d83ef77968ae59170a1e9

SHA256

d15ba749c366334fd969a221a70a8f567efb1ae5db0bdbceddb166301585806e

SHA512

3e5212b2de5b2fe9ca162625410559acacb11e7d04d431ff5af72662489efa20131f3648390edcf6bb97771683c26d4c47951ded7ebce072b03a67e25b1bc3b3

Malware Config

Extracted

Family agenttesla
Credentials

Protocol: smtp

Host: smtp.yandex.com

Port: 587

Username: mailjege@yandex.com

Password: recovery111

Targets
Target

83f51a31a3b9ed0a4087aca907befdeb

MD5

83f51a31a3b9ed0a4087aca907befdeb

Filesize

835KB

Score
10 /10
SHA1

f3805488954d7bdb7b1d83ef77968ae59170a1e9

SHA256

d15ba749c366334fd969a221a70a8f567efb1ae5db0bdbceddb166301585806e

SHA512

3e5212b2de5b2fe9ca162625410559acacb11e7d04d431ff5af72662489efa20131f3648390edcf6bb97771683c26d4c47951ded7ebce072b03a67e25b1bc3b3

Tags

Signatures

  • AgentTesla

    Description

    Agent Tesla is a remote access tool (RAT) written in visual basic.

    Tags

  • Turns off Windows Defender SpyNet reporting

    Tags

    TTPs

    Disabling Security Tools Modify Registry
  • UAC bypass

    Tags

    TTPs

    Bypass User Account Control Disabling Security Tools Modify Registry
  • Windows security bypass

    Tags

    TTPs

    Disabling Security Tools Modify Registry
  • AgentTesla Payload

  • Looks for VirtualBox Guest Additions in registry

    Tags

    TTPs

    Query Registry Virtualization/Sandbox Evasion
  • Nirsoft

  • Executes dropped EXE

  • Looks for VMWare Tools registry key

    Tags

    TTPs

    Query Registry Virtualization/Sandbox Evasion
  • Checks BIOS information in registry

    Description

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

    TTPs

    Query Registry System Information Discovery
  • Drops startup file

  • Windows security modification

    Tags

    TTPs

    Disabling Security Tools Modify Registry
  • Checks whether UAC is enabled

    Tags

    TTPs

    System Information Discovery
  • Maps connected drives based on registry

    Description

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

    TTPs

    Query Registry Peripheral Device Discovery System Information Discovery
  • Suspicious use of SetThreadContext

Related Tasks

MITRE ATT&CK Matrix
Collection
    Command and Control
      Credential Access
        Execution
          Exfiltration
            Impact
              Initial Access
                Lateral Movement
                  Persistence
                    Privilege Escalation
                    Tasks

                    static1

                    behavioral1

                    3/10