Analysis

  • max time kernel
    108s
  • max time network
    75s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    26-01-2021 06:39

General

  • Target

    Purchase Order10.doc

  • Size

    1.9MB

  • MD5

    f31d2d6a7d01e211141333c3ec6d4cf4

  • SHA1

    29f4e3692eda9a58d505203b2aa55590890d7c51

  • SHA256

    d3dcf866f41cf696930dad4c6d1362e81b3d4d395dbd66761b6c7d882510fbac

  • SHA512

    000611a7e89ade1fe643c41b628d4c679b9d75c9da4cd2fd2c00c47fdd7b379438e69b6e103cc6297c10ff72698f670458ccd8c6a890a799196f3b7aa2b96e5c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    frostdell.uk
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    7213575aceACE@#$

Signatures

  • AgentTesla

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

  • AgentTesla Payload 7 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 5 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.

  • Suspicious use of SetThreadContext 5 IoCs
  • Drops file in Windows directory 1 IoCs
  • Program crash 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Purchase Order10.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1932
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
      "C:\Users\Admin\AppData\Roaming\liamhugox26631.scr"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:692
      • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
        "C:\Users\Admin\AppData\Roaming\liamhugox26631.scr"
        3⤵
        • Executes dropped EXE
        PID:2016
      • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
        "C:\Users\Admin\AppData\Roaming\liamhugox26631.scr"
        3⤵
        • Executes dropped EXE
        PID:1784
      • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
        "C:\Users\Admin\AppData\Roaming\liamhugox26631.scr"
        3⤵
        • Executes dropped EXE
        PID:368
      • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
        "C:\Users\Admin\AppData\Roaming\liamhugox26631.scr"
        3⤵
        • Executes dropped EXE
        PID:1592
      • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
        "C:\Users\Admin\AppData\Roaming\liamhugox26631.scr"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1384
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 692 -s 984
        3⤵
        • Loads dropped DLL
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:896

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Exploitation for Client Execution

1
T1203

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • C:\Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • \Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • \Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • \Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • \Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • \Users\Admin\AppData\Roaming\liamhugox26631.scr
    MD5

    bf36c3069116a3da50f1064adfdd155a

    SHA1

    cbb6f81f80e270ca89059eb96aab393f7b513044

    SHA256

    5d555eddfc23183dd821432fd2a4a04a543c8c1907b636440eb6e7d21829576c

    SHA512

    8c557a6943de45b1405405dea568a726eaf6f7b4874b0b93efaba467f3454bf68f674bb52d2c5e69fafdf3b530bcdc57cfc53c3443f6f95b8b561508c84a81bc

  • memory/368-25-0x000000000043764E-mapping.dmp
  • memory/692-12-0x000000006AB50000-0x000000006B23E000-memory.dmp
    Filesize

    6.9MB

  • memory/692-16-0x0000000000A40000-0x0000000000A9B000-memory.dmp
    Filesize

    364KB

  • memory/692-15-0x0000000000AA0000-0x0000000000AA1000-memory.dmp
    Filesize

    4KB

  • memory/692-13-0x0000000001050000-0x0000000001051000-memory.dmp
    Filesize

    4KB

  • memory/692-34-0x00000000009B0000-0x00000000009B1000-memory.dmp
    Filesize

    4KB

  • memory/692-9-0x0000000000000000-mapping.dmp
  • memory/896-54-0x0000000000910000-0x0000000000911000-memory.dmp
    Filesize

    4KB

  • memory/896-45-0x0000000000B70000-0x0000000000B81000-memory.dmp
    Filesize

    68KB

  • memory/896-41-0x0000000000000000-mapping.dmp
  • memory/1384-40-0x000000006AB50000-0x000000006B23E000-memory.dmp
    Filesize

    6.9MB

  • memory/1384-55-0x0000000000FD1000-0x0000000000FD2000-memory.dmp
    Filesize

    4KB

  • memory/1384-38-0x000000000043764E-mapping.dmp
  • memory/1384-51-0x0000000000FD0000-0x0000000000FD1000-memory.dmp
    Filesize

    4KB

  • memory/1592-33-0x000000000043764E-mapping.dmp
  • memory/1592-36-0x000000006AB50000-0x000000006B23E000-memory.dmp
    Filesize

    6.9MB

  • memory/1592-50-0x0000000000C50000-0x0000000000C51000-memory.dmp
    Filesize

    4KB

  • memory/1784-29-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1784-26-0x000000006AB50000-0x000000006B23E000-memory.dmp
    Filesize

    6.9MB

  • memory/1784-49-0x0000000004930000-0x0000000004931000-memory.dmp
    Filesize

    4KB

  • memory/1784-22-0x000000000043764E-mapping.dmp
  • memory/1788-6-0x000007FEF6E90000-0x000007FEF710A000-memory.dmp
    Filesize

    2.5MB

  • memory/1932-2-0x0000000071EA1000-0x0000000071EA4000-memory.dmp
    Filesize

    12KB

  • memory/1932-4-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1932-3-0x000000006F921000-0x000000006F923000-memory.dmp
    Filesize

    8KB

  • memory/1984-5-0x00000000750C1000-0x00000000750C3000-memory.dmp
    Filesize

    8KB

  • memory/2016-52-0x0000000000A10000-0x0000000000A11000-memory.dmp
    Filesize

    4KB

  • memory/2016-18-0x000000000043764E-mapping.dmp
  • memory/2016-21-0x000000006AB50000-0x000000006B23E000-memory.dmp
    Filesize

    6.9MB

  • memory/2016-17-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB