Analysis
- max time kernel
136s - max time network
140s - platform
windows7_x64 - resource
win7-20220901-en - resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system - submitted
10/10/2022, 07:21
Static task
static1
Behavioral task
behavioral1
Sample
Groupconfirmation.exe
Resource
win7-20220901-en
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
Groupconfirmation.exe
Resource
win10v2004-20220812-en
12 signatures
150 seconds
General
- Target Groupconfirmation.exe
- Size 188KB
- Sample221010-h6pc3sbbgp
- SHA256 ad924d27dc820f67d2253150531b4e2dd559d960697cd026ad5a4306d49f9aca
- MD5 f9ab4fefbda80e335429f78556bafdbd
- SHA1 a54c2861b91f9256e28f6869b5ad430bab20eb19
- SHA512 f1c62b74cb515bf5ad1fa7d5ea9ae4c9e19196fd470854d34bc45ce2badd5497119d57650996527efb69e7ac08b6887dcfb9b92a7d9ba44a10f2b32329fe8e6f
- SSDEEP 3072:31NjcVVnLpPu32b/1kdHbXFFgTyiQamEYul9982ID9hyaD52OhOT/mMSnQo:lNeZtadHkG5CbCD97VsT/NUQo
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2012 myohii.exe - Loads dropped DLL 3 IoCs
pid Process 1048 Groupconfirmation.exe 2012 myohii.exe 1784 myohii.exe - 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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook myohii.exe Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook myohii.exe Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook myohii.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2012 set thread context of 1784 2012 myohii.exe 28 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1784 myohii.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1048 wrote to memory of 2012 1048 Groupconfirmation.exe 27 PID 1048 wrote to memory of 2012 1048 Groupconfirmation.exe 27 PID 1048 wrote to memory of 2012 1048 Groupconfirmation.exe 27 PID 1048 wrote to memory of 2012 1048 Groupconfirmation.exe 27 PID 2012 wrote to memory of 1784 2012 myohii.exe 28 PID 2012 wrote to memory of 1784 2012 myohii.exe 28 PID 2012 wrote to memory of 1784 2012 myohii.exe 28 PID 2012 wrote to memory of 1784 2012 myohii.exe 28 PID 2012 wrote to memory of 1784 2012 myohii.exe 28 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook myohii.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook myohii.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Groupconfirmation.exe"C:\Users\Admin\AppData\Local\Temp\Groupconfirmation.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1048 -
C:\Users\Admin\AppData\Local\Temp\myohii.exe"C:\Users\Admin\AppData\Local\Temp\myohii.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2012 -
C:\Users\Admin\AppData\Local\Temp\myohii.exe"C:\Users\Admin\AppData\Local\Temp\myohii.exe"3⤵
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1784
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\myohii.exe
- Size 123KB
- SHA256 b81555762d4584988cfe55fe2cd9a6bc7cc231253d239877e0a0b406fc2e3fce
- MD5 fa696b16f763f8820496eab98dff0733
- SHA1 b04cca189b0561478f7cf2f393d1c9a2bbdf1eab
- SHA512 83624c97582276f0d3efedaafee5b18730839fb100c1a18c84512ee34e45b4173e04f9c780b89411e89a6c3f81e24da78b8da04eb1aae0d99e304bc5f5864b99
- SSDEEP 3072:/fWQ6ESTPnrfgIJKnuJitHEyRitb/zfdzSflJ:HWhEBkKnT2yRiIlJ
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\myohii.exe
- Size 123KB
- SHA256 b81555762d4584988cfe55fe2cd9a6bc7cc231253d239877e0a0b406fc2e3fce
- MD5 fa696b16f763f8820496eab98dff0733
- SHA1 b04cca189b0561478f7cf2f393d1c9a2bbdf1eab
- SHA512 83624c97582276f0d3efedaafee5b18730839fb100c1a18c84512ee34e45b4173e04f9c780b89411e89a6c3f81e24da78b8da04eb1aae0d99e304bc5f5864b99
- SSDEEP 3072:/fWQ6ESTPnrfgIJKnuJitHEyRitb/zfdzSflJ:HWhEBkKnT2yRiIlJ
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\myohii.exe
- Size 123KB
- SHA256 b81555762d4584988cfe55fe2cd9a6bc7cc231253d239877e0a0b406fc2e3fce
- MD5 fa696b16f763f8820496eab98dff0733
- SHA1 b04cca189b0561478f7cf2f393d1c9a2bbdf1eab
- SHA512 83624c97582276f0d3efedaafee5b18730839fb100c1a18c84512ee34e45b4173e04f9c780b89411e89a6c3f81e24da78b8da04eb1aae0d99e304bc5f5864b99
- SSDEEP 3072:/fWQ6ESTPnrfgIJKnuJitHEyRitb/zfdzSflJ:HWhEBkKnT2yRiIlJ
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\oncllzylztf.tt
- Size 4KB
- SHA256 5d9bc2585473c0b652be55d68a228831a9c8fd076506b8fc7d262b4da2929efb
- MD5 77539b8cb4beeb2df26e975a99e30b0d
- SHA1 7baa87f1ea61b306b9cfa8daf3fde17472be17a4
- SHA512 a66f569ff508346c4d5a8541d72ba04ebbd81fa46ecc458bc5da1b81014134ecea6e4f00636c7df40cfc157e440910ab3c9508eeec393cfd197496035d1765fe
- SSDEEP 96:emZR8FJ49czmcJxfC0atOmfQGs1jb25upP7ls5tgl1BNW6HZfvGU3iwNKqKtvdoc:nZR8HfzmcJI9smfQGsFb2547lsTgl1Bo
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\zahcvsh.l
- Size 104KB
- SHA256 a28c3bf80a6345221ecdf64d1e970c4001a4ad45832103e70b468b8f8c1166ec
- MD5 1f7d96c1ea41be038526b20792982c79
- SHA1 7de1930cbd5462aedaa43566e3d07344854aaa18
- SHA512 a1acedf27e9a8be94b6000e37609262a59cdaa92ea8bdfe5dce242a7297e2144d7c33660457e7922695d1e214e2bea4c191ae7d9816bbcefee6357d89d7b3bc4
- SSDEEP 1536:ELm34ZIr4pUa0pMMWtDaXKc4qVzLDIf/2aNJqQfXYmouFR9Howt2NbQ9ZyKRSk2V:9fEj3XtDKQf/2cfCuZHo8hZyKIZ
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\myohii.exe
- Size 123KB
- SHA256 b81555762d4584988cfe55fe2cd9a6bc7cc231253d239877e0a0b406fc2e3fce
- MD5 fa696b16f763f8820496eab98dff0733
- SHA1 b04cca189b0561478f7cf2f393d1c9a2bbdf1eab
- SHA512 83624c97582276f0d3efedaafee5b18730839fb100c1a18c84512ee34e45b4173e04f9c780b89411e89a6c3f81e24da78b8da04eb1aae0d99e304bc5f5864b99
- SSDEEP 3072:/fWQ6ESTPnrfgIJKnuJitHEyRitb/zfdzSflJ:HWhEBkKnT2yRiIlJ
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\myohii.exe
- Size 123KB
- SHA256 b81555762d4584988cfe55fe2cd9a6bc7cc231253d239877e0a0b406fc2e3fce
- MD5 fa696b16f763f8820496eab98dff0733
- SHA1 b04cca189b0561478f7cf2f393d1c9a2bbdf1eab
- SHA512 83624c97582276f0d3efedaafee5b18730839fb100c1a18c84512ee34e45b4173e04f9c780b89411e89a6c3f81e24da78b8da04eb1aae0d99e304bc5f5864b99
- SSDEEP 3072:/fWQ6ESTPnrfgIJKnuJitHEyRitb/zfdzSflJ:HWhEBkKnT2yRiIlJ
- MD5 SHA1 SHA512 SSDEEP