General

  • Target

    9843d29c2d36c7c69f35929ff9ee015ab34a7f208ccd98b46602130d528e8f73

  • Size

    243KB

  • Sample

    220521-n33n7ahfhl

  • MD5

    54366d8fbe6a788835ca0733c10518b2

  • SHA1

    f33f37d47a6cd8d13a8cc2ebdee62c7d1f7513e7

  • SHA256

    9843d29c2d36c7c69f35929ff9ee015ab34a7f208ccd98b46602130d528e8f73

  • SHA512

    d4366c287d0f4a7619c5a316d1ee624ac8247d7865f3d86ab0294d1d0df891e37bc58c04ddb1da3fd08ee958fb41ea42cca37ed539805ea2bc1341fa863e42f7

Malware Config

Targets

    • Target

      hesaphareketi0001.exe

    • Size

      666KB

    • MD5

      27839275fde048fc4d871e8b87a9c2f1

    • SHA1

      5f1fae9f00d7fd40fe9b4fcc9c3408c6e0c3d933

    • SHA256

      d5ce7b34c08ff86a5bd09d3dbd25b03be1e9848a94d4306de1dd7503a9fa955b

    • SHA512

      1c8e0a2f18169ebb7437e731beb11ef936fad10968a8eacb65679921735a4825a9474e8ec7d29759f9e574ac577c7958624792915a2bfbf3bc3e867e7a753305

    • AgentTesla

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

    • AgentTesla Payload

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • 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

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
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