Overview

overview

10

Static

static

Attached P...ls.exe

windows7_x64

10

Attached P...ls.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    152s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:17

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General

  • Target

    Attached Proforma-xls.exe

  • Size

    671KB

  • MD5

    6d22a496faacb5fd4c4717256c219b5c

  • SHA1

    ca2acc40e012b00b007900071cca1e334a49c3d5

  • SHA256

    5af795fb7f2afc8329d025b4b5f053942b82c75f4b3796a1a53f77e97e74019d

  • SHA512

    91be74d93f503d7763190a1a5f24779bf0b5f721649484928f34fcd97eb3ae310bcad397371df5e1a251a34e46db1be5916fbf467480e28c7a5220121dda19b8

Score
10/10
agentteslacollectionevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Credentials

  • Protocol:     smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    company1960

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    company1960

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Looks for VMWare Tools registry key 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of local email clients 2 TTPs

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

    spywarestealer
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
    collection
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Attached Proforma-xls.exe
    "C:\Users\Admin\AppData\Local\Temp\Attached Proforma-xls.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5056
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VpwSKBybNCVas" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBF68.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3648
    • C:\Users\Admin\AppData\Local\Temp\Attached Proforma-xls.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3856

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpBF68.tmp
    Filesize

    1KB

    MD5

    d65d962835a7a9a48cee42de2da32720

    SHA1

    e3afea832426742d47cc8bc599b4ca77025eb48b

    SHA256

    4c5f7acfce0f2324ce33fd5b0b61d5ba1ebbd34f00f32aa3878dd44c50ee572f

    SHA512

    71cab5bc0641e071de195cdd98de428aa11aca4d04c952bef067fda873c0ac30b4bf5dce217a7c0aba65e564640afa995b60a4b64ae9974071cf41a91221452e

    Download Submit
  • memory/3648-136-0x0000000000000000-mapping.dmp
    Download
  • memory/3856-138-0x0000000000000000-mapping.dmp
    Download
  • memory/3856-139-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

    Download
  • memory/3856-140-0x00000000064C0000-0x0000000006510000-memory.dmp
    Filesize

    320KB

    Download
  • memory/5056-130-0x0000000000910000-0x00000000009BE000-memory.dmp
    Filesize

    696KB

    Download
  • memory/5056-131-0x0000000005A80000-0x0000000006024000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/5056-132-0x0000000005380000-0x0000000005412000-memory.dmp
    Filesize

    584KB

    Download
  • memory/5056-133-0x0000000005340000-0x000000000534A000-memory.dmp
    Filesize

    40KB

    Download
  • memory/5056-134-0x0000000008DE0000-0x0000000008E7C000-memory.dmp
    Filesize

    624KB

    Download
  • memory/5056-135-0x000000000E800000-0x000000000E866000-memory.dmp
    Filesize

    408KB

    Download