Overview

overview

10

Static

static

COSU 62705...48.exe

windows7_x64

3

COSU 62705...48.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    111s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 11:58

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General

  • Target

    COSU 6270575380 PCL2004868048.exe

  • Size

    606KB

  • MD5

    d1d433ad7fe5db077cb81ef0e4ec4e60

  • SHA1

    d94a577faa1557bef7fd9d2eecf7386ec3ea7e88

  • SHA256

    b4b4e82b4584a55722d213ea607a3b1131caaa039589a27e12ba4feeeaee7fb5

  • SHA512

    b1dbb723d3a342ef6666a9d11cca5182bc2228c146f2d6912eac3ea337bc1bb9b9ab55a11c1a95bf9a5bc834c41870d8b3fb2d5baafc99106289eb3c2a2b0c4c

Score
10/10
agentteslacollectionkeyloggerspywarestealertrojan

Malware Config

Extracted

Credentials

  • Protocol:     smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Everest10

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Everest10

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 1 IoCs
  • 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
  • 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 3 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\COSU 6270575380 PCL2004868048.exe
    "C:\Users\Admin\AppData\Local\Temp\COSU 6270575380 PCL2004868048.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:436
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UGVpSjQyl" /XML "C:\Users\Admin\AppData\Local\Temp\tmp833A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2620
    • C:\Users\Admin\AppData\Local\Temp\COSU 6270575380 PCL2004868048.exe
      "C:\Users\Admin\AppData\Local\Temp\COSU 6270575380 PCL2004868048.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:3116

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

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

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\COSU 6270575380 PCL2004868048.exe.log
    Filesize

    1KB

    MD5

    17573558c4e714f606f997e5157afaac

    SHA1

    13e16e9415ceef429aaf124139671ebeca09ed23

    SHA256

    c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

    SHA512

    f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\tmp833A.tmp
    Filesize

    1KB

    MD5

    2a2a186c916e86e454dece9f79cb2b2b

    SHA1

    cc69cf3b2ca84a15e8981072121e1d40978c7e6d

    SHA256

    5df2c77fceaaf53279a1d83df3451eeb66128786cc4d08f380c8b985da259152

    SHA512

    cd2cb1d5b3a5fb7deb2ef04d5e26b3726f4ba1d4329a79bead475b633273b948656186a1856f6fb8301fbe54c5d5240494f7efc612b79561487f095cde2bdad6

    Download Submit
  • memory/436-134-0x00000000051C0000-0x000000000525C000-memory.dmp
    Filesize

    624KB

    Download
  • memory/436-135-0x0000000005810000-0x0000000005DB4000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/436-136-0x0000000005300000-0x0000000005392000-memory.dmp
    Filesize

    584KB

    Download
  • memory/436-137-0x00000000052A0000-0x00000000052AA000-memory.dmp
    Filesize

    40KB

    Download
  • memory/436-138-0x0000000005550000-0x00000000055A6000-memory.dmp
    Filesize

    344KB

    Download
  • memory/436-133-0x00000000008C0000-0x000000000095E000-memory.dmp
    Filesize

    632KB

    Download
  • memory/2620-139-0x0000000000000000-mapping.dmp
    Download
  • memory/3116-142-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

    Download
  • memory/3116-141-0x0000000000000000-mapping.dmp
    Download
  • memory/3116-144-0x0000000006790000-0x00000000067F6000-memory.dmp
    Filesize

    408KB

    Download
  • memory/3116-145-0x0000000006E30000-0x0000000006E80000-memory.dmp
    Filesize

    320KB

    Download