Overview

overview

10

Static

static

Remittance...11.exe

windows7_x64

10

Remittance...11.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:00

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General

  • Target

    Remittances For Our China Agent 111.exe

  • Size

    599KB

  • MD5

    f42fa8b891783850ceffbeaf6cfbd883

  • SHA1

    cf7909964f9902c0617fef8a4b3710ae9ab85cfe

  • SHA256

    7dc68f49a36e9441ebdeb8d89f29924c3aa7f8ecf76ff7300da8248d9dac468e

  • SHA512

    6f714b9af0bd3e4b6b3561215fda23a059002b401f33bc808c729606f17da38efda38f92649bc2cde60208110588a6c5b0e8d9cf3ccea7d288c00bf4535f18bd

Score
10/10
agentteslacollectionevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    mail.opporajasthan.in
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Systems@1234

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 data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

    spywarestealer
  • 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Remittances For Our China Agent 111.exe
    "C:\Users\Admin\AppData\Local\Temp\Remittances For Our China Agent 111.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:2040
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YiOAJJbXIck" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9BC3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:824
    • C:\Users\Admin\AppData\Local\Temp\Remittances For Our China Agent 111.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4644

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

3
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

3
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Remittances For Our China Agent 111.exe.log
    Filesize

    1KB

    MD5

    e08f822522c617a40840c62e4b0fb45e

    SHA1

    ae516dca4da5234be6676d3f234c19ec55725be7

    SHA256

    bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

    SHA512

    894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\tmp9BC3.tmp
    Filesize

    1KB

    MD5

    d54073c60d8b3b40f3e698f6575a5e7e

    SHA1

    db11d13b8860080a505d1c43f80f508784940c90

    SHA256

    64e04e7d9a25d657dc41fc5d35fcf391ec5570a90835295ce1e78bb90644587b

    SHA512

    e06f9f221d7f26d0656ec66ef81b6e9ce6136be056999bebb999ddd71363e5cf20f71072ba6658fb28e33f24b75d7f8651f6c804b25094ee4ab5787258ba5c7e

    Download Submit
  • memory/824-136-0x0000000000000000-mapping.dmp
    Download
  • memory/2040-130-0x0000000000E40000-0x0000000000EDC000-memory.dmp
    Filesize

    624KB

    Download
  • memory/2040-131-0x0000000006160000-0x0000000006704000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/2040-132-0x0000000005BB0000-0x0000000005C42000-memory.dmp
    Filesize

    584KB

    Download
  • memory/2040-133-0x0000000005CA0000-0x0000000005CAA000-memory.dmp
    Filesize

    40KB

    Download
  • memory/2040-134-0x000000000DCF0000-0x000000000DD8C000-memory.dmp
    Filesize

    624KB

    Download
  • memory/2040-135-0x000000000DD90000-0x000000000DDF6000-memory.dmp
    Filesize

    408KB

    Download
  • memory/4644-138-0x0000000000000000-mapping.dmp
    Download
  • memory/4644-139-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

    Download
  • memory/4644-141-0x0000000006530000-0x0000000006580000-memory.dmp
    Filesize

    320KB

    Download