General

  • Target

    89-079831221.doc

  • Size

    27KB

  • Sample

    221206-hrhxrage9y

  • MD5

    7491a7d24a91632ccbb5b427813b3af4

  • SHA1

    9372c849f9612e83e82d605e9c342fa9148e5367

  • SHA256

    2450e082147d46b692e3ff2cfc70c64b9e3e1e5dcab9afed208b28dc0557b4ee

  • SHA512

    a814d63a1ebb263af4301ef73a24febd71fca06cf00afea703451677892324ed1650a9cf39729df7be10d174bdbd50ed1821e2a2a1dc946ec48417f071c017c7

  • SSDEEP

    384:gQMmdOFNYY0aaaIswqPeOrka1+fHQJ+t3rQkRhZ/OqgkJQ2dshCOErzALyl/QGM5:8Fx0XaIsnPRIa4fwJMBOPcQl8X/QLBz

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      89-079831221.doc

    • Size

      27KB

    • MD5

      7491a7d24a91632ccbb5b427813b3af4

    • SHA1

      9372c849f9612e83e82d605e9c342fa9148e5367

    • SHA256

      2450e082147d46b692e3ff2cfc70c64b9e3e1e5dcab9afed208b28dc0557b4ee

    • SHA512

      a814d63a1ebb263af4301ef73a24febd71fca06cf00afea703451677892324ed1650a9cf39729df7be10d174bdbd50ed1821e2a2a1dc946ec48417f071c017c7

    • SSDEEP

      384:gQMmdOFNYY0aaaIswqPeOrka1+fHQJ+t3rQkRhZ/OqgkJQ2dshCOErzALyl/QGM5:8Fx0XaIsnPRIa4fwJMBOPcQl8X/QLBz

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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