General

  • Target

    Invoice - Details 13052022.xlsx

  • Size

    716KB

  • Sample

    220923-jttmpsdee4

  • MD5

    26ee50211ff7201897b437362d140af0

  • SHA1

    c6da3b31af04be390d693742f5b1431603910c79

  • SHA256

    7205488fe5a1d3d05f0734af8b156d5c1603e9334b407845eb5545950e7b9acc

  • SHA512

    a7aba8881de4532f4c919ea9031dcc50dff04bb9aeab79db9a4157e4994b17374f6cc5bd9d8458ebc466492a4740e1e789b89917200b39a66538bbf0d3f33ba8

  • SSDEEP

    12288:wuPjcn2Qt0f/jOBpmG9E8oJB+IyI2T3nluUm88qbYKg6KaQSC1XhBj6+hJPQNC:s0f7nG9E8KbUjlwqFg6BxshBjfIM

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5745518580:AAGBUVNjUa-cbW8yKiBGch3YAS2x6fySWcc/

Targets

    • Target

      Invoice - Details 13052022.xlsx

    • Size

      716KB

    • MD5

      26ee50211ff7201897b437362d140af0

    • SHA1

      c6da3b31af04be390d693742f5b1431603910c79

    • SHA256

      7205488fe5a1d3d05f0734af8b156d5c1603e9334b407845eb5545950e7b9acc

    • SHA512

      a7aba8881de4532f4c919ea9031dcc50dff04bb9aeab79db9a4157e4994b17374f6cc5bd9d8458ebc466492a4740e1e789b89917200b39a66538bbf0d3f33ba8

    • SSDEEP

      12288:wuPjcn2Qt0f/jOBpmG9E8oJB+IyI2T3nluUm88qbYKg6KaQSC1XhBj6+hJPQNC:s0f7nG9E8KbUjlwqFg6BxshBjfIM

    • AgentTesla

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • 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

Execution

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks