General

  • Target

    c3fdc313fbe3c620f9f7ed163f47fb8f153cdd7fb3822b90f543627050ab4df2

  • Size

    527KB

  • Sample

    220521-nd4vysgfem

  • MD5

    63fa7120b78e8168b19a55a5b01241ed

  • SHA1

    3fd3e0929bf90d4d56335e92f2b16f8c413b86a7

  • SHA256

    c3fdc313fbe3c620f9f7ed163f47fb8f153cdd7fb3822b90f543627050ab4df2

  • SHA512

    0f73697cb23b5d9d77f2d90ff59c45dc3c75540ff83f93b2da7afde33e701878b4955704d1172cdb185f00b17a9bb5969cf941b05875a1bb2741952b4304f61f

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    Successful75101@yandex.com
  • Password:
    drsaint1992101

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    Successful75101@yandex.com
  • Password:
    drsaint1992101

Targets

    • Target

      BL & Original Shipping Documents AWB-62987268.exe

    • Size

      731KB

    • MD5

      7236e60628c25d1b48ae9de6eb5e6b8c

    • SHA1

      486cab73374fc98b369a1caf19bc2fc7c9285ad1

    • SHA256

      8ac57ec0d32b453aa23a1c7149d5cd5695c8a99a9bd0b792bfc1411b1216c4da

    • SHA512

      32e489c7ad82171d9349d7a89191d222aa3f784e462589345f3d1a010e63c024cd08232844d529d3396b60c505b3ef35f9378cea2c6efdd094e4b94c58d72873

    • AgentTesla

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

    • AgentTesla Payload

    • Disables RegEdit via registry modification

    • Checks computer location settings

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

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks