Analysis

  • max time kernel
    125s
  • max time network
    228s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    19-10-2021 15:17

General

  • Target

    Revised Order.exe

  • Size

    700KB

  • MD5

    e9901eec1af843e9546a659866270f6e

  • SHA1

    57b6cccf4084b0a4aff6d236eb6a30df4fe8029f

  • SHA256

    20307784e2521eb5d902498d8c893d7c884e518c38d8659780019ad08fbd341b

  • SHA512

    b98b4937c9c94ebbe91f14e758a7b43d7999047c30840ca802ae60ec18fad4479c9bc21a1a375280119969ebc229065a85f17052804aff96b1246dbacd21959e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.aldhiyafainteriors.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    dhiyafa@987

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

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

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 3 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\Revised Order.exe
    "C:\Users\Admin\AppData\Local\Temp\Revised Order.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1844
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ucluvjDNoCBwJD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2BBF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1884
    • C:\Users\Admin\AppData\Local\Temp\Revised Order.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2924

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Revised Order.exe.log
    MD5

    90acfd72f14a512712b1a7380c0faf60

    SHA1

    40ba4accb8faa75887e84fb8e38d598dc8cf0f12

    SHA256

    20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

    SHA512

    29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

  • C:\Users\Admin\AppData\Local\Temp\tmp2BBF.tmp
    MD5

    c318beb7963c1b9136c0f0190fc9186d

    SHA1

    1f6fd3fe219755de3a5a69ef0eb3f8f4280034e0

    SHA256

    046432a8376a5097c4925e891d16bc2a017b3837a79390722aa8897bee3950b8

    SHA512

    0095ea5643be1987a18e19aebe7b74cfcabb6b46ac1d40f61b33e9d76eeb13eb72becbaf0de0c63a55a3d9b65c56f636e2a843a2d10ddd7ec3d8aff9bfc57e36

  • memory/1844-124-0x0000000008D90000-0x0000000008E05000-memory.dmp
    Filesize

    468KB

  • memory/1844-118-0x0000000005A00000-0x0000000005A01000-memory.dmp
    Filesize

    4KB

  • memory/1844-120-0x0000000002F50000-0x0000000002F51000-memory.dmp
    Filesize

    4KB

  • memory/1844-121-0x00000000056B0000-0x00000000056B1000-memory.dmp
    Filesize

    4KB

  • memory/1844-122-0x0000000005500000-0x00000000059FE000-memory.dmp
    Filesize

    5.0MB

  • memory/1844-123-0x0000000005810000-0x000000000581E000-memory.dmp
    Filesize

    56KB

  • memory/1844-115-0x0000000000AE0000-0x0000000000AE1000-memory.dmp
    Filesize

    4KB

  • memory/1844-125-0x000000000B540000-0x000000000B578000-memory.dmp
    Filesize

    224KB

  • memory/1844-117-0x00000000053B0000-0x00000000053B1000-memory.dmp
    Filesize

    4KB

  • memory/1844-119-0x0000000005500000-0x0000000005501000-memory.dmp
    Filesize

    4KB

  • memory/1884-126-0x0000000000000000-mapping.dmp
  • memory/2924-128-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/2924-129-0x00000000004376CE-mapping.dmp
  • memory/2924-135-0x0000000004FC0000-0x00000000054BE000-memory.dmp
    Filesize

    5.0MB

  • memory/2924-136-0x0000000005470000-0x0000000005471000-memory.dmp
    Filesize

    4KB

  • memory/2924-137-0x0000000005C20000-0x0000000005C21000-memory.dmp
    Filesize

    4KB

  • memory/2924-140-0x0000000004FC0000-0x00000000054BE000-memory.dmp
    Filesize

    5.0MB