Overview
overview
7Static
static
6analisis.pdf
windows7-x64
7analisis.pdf
windows10-1703-x64
1analisis.pdf
windows10-2004-x64
1analisis.pdf
windows11-21h2-x64
1informe_payload.exe
windows7-x64
7informe_payload.exe
windows10-1703-x64
7informe_payload.exe
windows10-2004-x64
7informe_payload.exe
windows11-21h2-x64
7Analysis
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max time kernel
67s -
max time network
68s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
17-05-2024 17:34
Behavioral task
behavioral1
Sample
analisis.pdf
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
analisis.pdf
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
analisis.pdf
Resource
win10v2004-20240508-en
Behavioral task
behavioral4
Sample
analisis.pdf
Resource
win11-20240426-en
Behavioral task
behavioral5
Sample
informe_payload.exe
Resource
win7-20231129-en
Behavioral task
behavioral6
Sample
informe_payload.exe
Resource
win10-20240404-en
Behavioral task
behavioral7
Sample
informe_payload.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral8
Sample
informe_payload.exe
Resource
win11-20240508-en
General
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Target
analisis.pdf
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Size
212KB
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MD5
f28baa94ff32d8a4b006004b3c9c4261
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SHA1
54677341b7e233d8c0b6dcd38dc5e9d1a58511ef
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SHA256
cc48d8c645c27dd850652c0a66e22dd2e1b62bbf6ad208f94b8f5847684a8d17
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SHA512
853dc19d16e4387210e63b3de74c044db802e429bf12d082e00b66f127bb64e742cad32e2b1f23661a11cb47341d7b34e249533b2fb15a3815ed81b677f64989
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SSDEEP
3072:cyu1+HubW8lW1Sn6WEQKLy0jSaMWyAKCxxDghhiR9j4BIIADNI63Cv3UOLn5ZVv1:cyu1PdWEHEQlWyA/7am9kBAJIECvv5bd
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
Processes:
informe_payload.pdfwinlogon.exeinforme_payload.exepid process 2572 informe_payload.pdf 2244 winlogon.exe 2412 informe_payload.exe -
Loads dropped DLL 2 IoCs
Processes:
cmd.exepid process 2796 cmd.exe 2796 cmd.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
winlogon.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\SunJavaUpdateSched = "\"C:\\windows\\winlogon.exe\"" winlogon.exe -
Drops file in Windows directory 4 IoCs
Processes:
AcroRd32.exeinforme_payload.pdfdescription ioc process File opened for modification \??\c:\windows\installer\{ac76ba86-7ad7-1033-7b44-a90000000001}\sc_reader.exe AcroRd32.exe File created \??\c:\windows\winlogon.exe informe_payload.pdf File opened for modification \??\c:\windows\winlogon.exe informe_payload.pdf File opened for modification C:\Windows\Installer\{AC76BA86-7AD7-1033-7B44-A90000000001}\SC_Reader.exe AcroRd32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 47 IoCs
Processes:
AcroRd32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByDirection = "1" AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlgLegacy AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\LogicalViewMode = "1" AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_Classes\Local Settings AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags AcroRd32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlgLegacy\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}" AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9} AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlot = "2" AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7} AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a000000a000000030f125b7ef471a10a5f102608c9eebac0c00000050000000a66a63283d95d211b5d600c04fd918d00b0000007800000030f125b7ef471a10a5f102608c9eebac0e00000078000000 AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Mode = "4" AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\LogicalViewMode = "2" AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1092616257" AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000 AcroRd32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlgLegacy\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}" AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Sort = 000000000000000000000000000000000200000030f125b7ef471a10a5f102608c9eebac0a0000000100000030f125b7ef471a10a5f102608c9eebac0e000000ffffffff AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlgLegacy\TV_TopViewVersion = "0" AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\IconSize = "16" AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 0202 AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2 AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "48" AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1" AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000007800000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\FFlags = "1" AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Mode = "6" AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupView = "0" AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000 AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\FFlags = "1092616257" AcroRd32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Sort = 000000000000000000000000000000000100000030f125b7ef471a10a5f102608c9eebac0a00000001000000 AcroRd32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:FMTID = "{00000000-0000-0000-0000-000000000000}" AcroRd32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:PID = "0" AcroRd32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC} AcroRd32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
AcroRd32.exepid process 2416 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 5 IoCs
Processes:
AcroRd32.exepid process 2416 AcroRd32.exe 2416 AcroRd32.exe 2416 AcroRd32.exe 2416 AcroRd32.exe 2416 AcroRd32.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
AcroRd32.execmd.exeinforme_payload.pdfdescription pid process target process PID 2416 wrote to memory of 2796 2416 AcroRd32.exe cmd.exe PID 2416 wrote to memory of 2796 2416 AcroRd32.exe cmd.exe PID 2416 wrote to memory of 2796 2416 AcroRd32.exe cmd.exe PID 2416 wrote to memory of 2796 2416 AcroRd32.exe cmd.exe PID 2796 wrote to memory of 2572 2796 cmd.exe informe_payload.pdf PID 2796 wrote to memory of 2572 2796 cmd.exe informe_payload.pdf PID 2796 wrote to memory of 2572 2796 cmd.exe informe_payload.pdf PID 2796 wrote to memory of 2572 2796 cmd.exe informe_payload.pdf PID 2572 wrote to memory of 2244 2572 informe_payload.pdf winlogon.exe PID 2572 wrote to memory of 2244 2572 informe_payload.pdf winlogon.exe PID 2572 wrote to memory of 2244 2572 informe_payload.pdf winlogon.exe PID 2572 wrote to memory of 2244 2572 informe_payload.pdf winlogon.exe
Processes
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C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\analisis.pdf"1⤵
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /Q /C %HOMEDRIVE%&cd %HOMEPATH%&(if exist "Desktop\informe_payload.pdf" (cd "Desktop"))&(if exist "My Documents\informe_payload.pdf" (cd "My Documents"))&(if exist "Documents\informe_payload.pdf" (cd "Documents"))&(if exist "Escritorio\informe_payload.pdf" (cd "Escritorio"))&(if exist "Mis Documentos\informe_payload.pdf" (cd "Mis Documentos"))&(start informe_payload.pdf) To view the encrypted content please tick the "Do not show this message again" box and press Open.2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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\??\c:\Users\Admin\Desktop\informe_payload.pdfinforme_payload.pdf3⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\windows\winlogon.exe"C:\windows\winlogon.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{AB8902B4-09CA-4BB6-B78D-A8F59079A8D5}1⤵
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵
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C:\Users\Admin\Desktop\informe_payload.exe"C:\Users\Admin\Desktop\informe_payload.exe"1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEventsFilesize
3KB
MD56e4d3ad22d72101578d79e9d30f2a63f
SHA1e94c1d61dddf0c447f9f0537c9433832a1b09560
SHA256dbc9282d5aee52330f6d6d4e3e8aba02366ffcac87f231d90b284f871e4a9bc2
SHA512e26a370a7c03256d9f1b716987e6def0784c888fdd53c0fdbe26467d8fe80909e55b8592396ea36ccc35f84fd6c69e42e1e8254b70e778e287343323bd69a910
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C:\Users\Admin\Desktop\informe_payload.pdfFilesize
32KB
MD58606faa60b008da0ce43437dc81be1e2
SHA113444f825362a6a946b3a91b13784d78fe3fc422
SHA2564de3dde86d66424d79fcb561ace579d6b22919f52505aa177bd161bcf4157c4f
SHA512e23e310399baf03034b51f1be445ea01a6ef2ec4f82da43af6c4639dc28834d49119ddb83f40019ff6c9b45124da637d579ef5289620a13a7078284c7fead33b
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memory/2244-32-0x0000000000400000-0x000000000040D000-memory.dmpFilesize
52KB
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memory/2244-34-0x0000000000400000-0x000000000040D000-memory.dmpFilesize
52KB
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memory/2412-36-0x0000000000400000-0x000000000040D000-memory.dmpFilesize
52KB
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memory/2416-0-0x0000000004160000-0x0000000004162000-memory.dmpFilesize
8KB
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memory/2572-28-0x0000000000400000-0x000000000040D000-memory.dmpFilesize
52KB