Analysis

  • max time kernel
    153s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 13:07

General

  • Target

    5f3647bb8dcd43051d9c101e8d1b748bc4a85805079faf4f91881e9012946115.exe

  • Size

    4.1MB

  • MD5

    bcf2d47e89eae5e561786e67e18944b8

  • SHA1

    8df0dec10fcb6f6ca6127a84f4eb79ee40f77ddd

  • SHA256

    5f3647bb8dcd43051d9c101e8d1b748bc4a85805079faf4f91881e9012946115

  • SHA512

    56df6ee44deafb76dd781d1e9261076634aeda0a3a04f175e382f3f4f3c417349e5662fec69401e3b2958209f8db270a7fa8a8f5201b6d61a2dd2fb1ef25aa30

  • SSDEEP

    98304:Qzi78zCdEFvizhzP0jkWnQBCfBr/XG5rMBD:qNCaiNAjYkt/XG5rMh

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    rune1234

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 6 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 10 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5f3647bb8dcd43051d9c101e8d1b748bc4a85805079faf4f91881e9012946115.exe
    "C:\Users\Admin\AppData\Local\Temp\5f3647bb8dcd43051d9c101e8d1b748bc4a85805079faf4f91881e9012946115.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4404
    • C:\Users\Admin\AppData\Local\Temp\6rlgMYXOxB800ra8.exe
      "C:\Users\Admin\AppData\Local\Temp\6rlgMYXOxB800ra8.exe"
      2⤵
      • Executes dropped EXE
      PID:5020
    • C:\Users\Admin\AppData\Local\Temp\5f3647bb8dcd43051d9c101e8d1b748bc4a85805079faf4f91881e9012946115.exe
      "C:\Users\Admin\AppData\Local\Temp\5f3647bb8dcd43051d9c101e8d1b748bc4a85805079faf4f91881e9012946115.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Users\Admin\AppData\Local\Temp\EBFile_1.exe
        "C:\Users\Admin\AppData\Local\Temp\EBFile_1.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        PID:4144
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:4604
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4260

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Scripting

1
T1064

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\5f3647bb8dcd43051d9c101e8d1b748bc4a85805079faf4f91881e9012946115.exe.log
    Filesize

    400B

    MD5

    0a9b4592cd49c3c21f6767c2dabda92f

    SHA1

    f534297527ae5ccc0ecb2221ddeb8e58daeb8b74

    SHA256

    c7effe9cb81a70d738dee863991afefab040290d4c4b78b4202383bcb9f88fcd

    SHA512

    6b878df474e5bbfb8e9e265f15a76560c2ef151dcebc6388c82d7f6f86ffaf83f5ade5a09f1842e493cb6c8fd63b0b88d088c728fd725f7139f965a5ee332307

  • C:\Users\Admin\AppData\Local\Temp\6rlgMYXOxB800ra8.exe
    Filesize

    3.4MB

    MD5

    78c6235c46c14c40f83d1d0514dab9a5

    SHA1

    8bda9e7585865eee408eb7157dc8b07aaf440c80

    SHA256

    4691662a75311acfedd1b7d9ca147239c3cd477367633407735bf924bb0ba967

    SHA512

    6a5038944d2576cfd68f1b7294b00a1b39bba44eb8b378fd2750a43151f2208f3595b8e4900afabce558a40d398e84c342da34b4f9b41b93fb4b7053d1dcc8c7

  • C:\Users\Admin\AppData\Local\Temp\6rlgMYXOxB800ra8.exe
    Filesize

    3.4MB

    MD5

    78c6235c46c14c40f83d1d0514dab9a5

    SHA1

    8bda9e7585865eee408eb7157dc8b07aaf440c80

    SHA256

    4691662a75311acfedd1b7d9ca147239c3cd477367633407735bf924bb0ba967

    SHA512

    6a5038944d2576cfd68f1b7294b00a1b39bba44eb8b378fd2750a43151f2208f3595b8e4900afabce558a40d398e84c342da34b4f9b41b93fb4b7053d1dcc8c7

  • C:\Users\Admin\AppData\Local\Temp\EBFile_1.exe
    Filesize

    163KB

    MD5

    9142396d079b60d74253b1154a92a0d0

    SHA1

    c1737af21104fb2b8890569a0aedcd11cd9cba58

    SHA256

    cad2df8cfab6d9c134f7fbec9b16d402970e1539811d33a3f6df4be474b59b21

    SHA512

    0c80b6cfc3c7a5215a6d605ac6c4349b85ef28ce7c5d235041ff245825da2e05d0767b2b562f06932af62c27f8e5dae8508d9a37352be7434b7d7c8cf2d701c2

  • C:\Users\Admin\AppData\Local\Temp\EBFile_1.exe
    Filesize

    163KB

    MD5

    9142396d079b60d74253b1154a92a0d0

    SHA1

    c1737af21104fb2b8890569a0aedcd11cd9cba58

    SHA256

    cad2df8cfab6d9c134f7fbec9b16d402970e1539811d33a3f6df4be474b59b21

    SHA512

    0c80b6cfc3c7a5215a6d605ac6c4349b85ef28ce7c5d235041ff245825da2e05d0767b2b562f06932af62c27f8e5dae8508d9a37352be7434b7d7c8cf2d701c2

  • C:\Users\Admin\AppData\Local\Temp\holdermail.txt
    Filesize

    3KB

    MD5

    f94dc819ca773f1e3cb27abbc9e7fa27

    SHA1

    9a7700efadc5ea09ab288544ef1e3cd876255086

    SHA256

    a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

    SHA512

    72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

  • memory/2036-138-0x0000000000400000-0x00000000004FA000-memory.dmp
    Filesize

    1000KB

  • memory/2036-142-0x0000000075590000-0x0000000075B41000-memory.dmp
    Filesize

    5.7MB

  • memory/2036-140-0x0000000075590000-0x0000000075B41000-memory.dmp
    Filesize

    5.7MB

  • memory/2036-137-0x0000000000000000-mapping.dmp
  • memory/4144-152-0x0000000075590000-0x0000000075B41000-memory.dmp
    Filesize

    5.7MB

  • memory/4144-146-0x0000000075590000-0x0000000075B41000-memory.dmp
    Filesize

    5.7MB

  • memory/4144-143-0x0000000000000000-mapping.dmp
  • memory/4260-153-0x0000000000000000-mapping.dmp
  • memory/4260-154-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4260-156-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4260-157-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4260-159-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4404-132-0x0000000075590000-0x0000000075B41000-memory.dmp
    Filesize

    5.7MB

  • memory/4404-141-0x0000000075590000-0x0000000075B41000-memory.dmp
    Filesize

    5.7MB

  • memory/4404-133-0x0000000075590000-0x0000000075B41000-memory.dmp
    Filesize

    5.7MB

  • memory/4604-147-0x0000000000000000-mapping.dmp
  • memory/4604-148-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4604-150-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4604-151-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/5020-134-0x0000000000000000-mapping.dmp