Analysis

  • max time kernel
    140s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    27-07-2021 17:47

General

  • Target

    New Order.exe

  • Size

    859KB

  • MD5

    b8e5a84cef79a45bb1d32eae8cfefb0e

  • SHA1

    4f54310299013d1fd52c0f8e1640487393a5ee9d

  • SHA256

    fad8c5931f0dd3fbd63fe0a0e2d6799edf4004ed20a9afebbcd54cfabb5595fd

  • SHA512

    dce3c04a834e63019004a9aa76c7815c446d648e96c517a14c5604e7ad4e0e1efa35feb358484fbc89e59f88880be74de64b99c8c61bc6a4903ee1cbe907afbc

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.alruomigroup.com
  • Port:
    587
  • Username:
    eepauloffice@alruomigroup.com
  • Password:
    HpabZXh7

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\New Order.exe
    "C:\Users\Admin\AppData\Local\Temp\New Order.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1756
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:528

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • \Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • memory/528-68-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/528-69-0x000000000043759E-mapping.dmp
  • memory/528-72-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/528-74-0x0000000004B50000-0x0000000004B51000-memory.dmp
    Filesize

    4KB

  • memory/528-75-0x0000000004B51000-0x0000000004B52000-memory.dmp
    Filesize

    4KB

  • memory/1756-64-0x00000000022F1000-0x00000000022F2000-memory.dmp
    Filesize

    4KB

  • memory/1756-65-0x00000000009C0000-0x00000000009CB000-memory.dmp
    Filesize

    44KB

  • memory/1756-66-0x0000000000870000-0x0000000000871000-memory.dmp
    Filesize

    4KB

  • memory/1756-59-0x00000000008B0000-0x00000000008B1000-memory.dmp
    Filesize

    4KB

  • memory/1756-63-0x0000000000830000-0x0000000000851000-memory.dmp
    Filesize

    132KB

  • memory/1756-61-0x00000000022F0000-0x00000000022F1000-memory.dmp
    Filesize

    4KB