Analysis
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max time kernel
32s -
max time network
33s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
12-06-2024 12:32
Static task
static1
Behavioral task
behavioral1
Sample
Ana.exe
Resource
win7-20231129-en
General
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Target
Ana.exe
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Size
2.1MB
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MD5
f571faca510bffe809c76c1828d44523
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SHA1
7a3ca1660f0a513316b8cd5496ac7dbe82f0e0c2
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SHA256
117d7af0deb40b3fe532bb6cbe374884fa55ed7cfe053fe698720cdccb5a59cb
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SHA512
a08bca2fb1387cc70b737520d566c7117aa3fdb9a52f5dbb0bb7be44630da7977882d8c808cbee843c8a180777b4ac5819e8bafda6b2c883e380dc7fb5358a51
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SSDEEP
49152:OwVYlfBUDiZx8Fa/Q0NuB3btlnCItWNSwoy:OxPUDQmso0NuBZlnCItM
Malware Config
Signatures
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Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
DB.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion DB.EXE -
Executes dropped EXE 7 IoCs
Processes:
AV.EXEAV2.EXEDB.EXEEN.EXESB.EXERtlDriver32.exepH17766MjGaO17766.exepid process 1752 AV.EXE 2384 AV2.EXE 2660 DB.EXE 2624 EN.EXE 2740 SB.EXE 2416 RtlDriver32.exe 2304 pH17766MjGaO17766.exe -
Loads dropped DLL 11 IoCs
Processes:
Ana.exeAV.EXEAV2.EXEpid process 2012 Ana.exe 2012 Ana.exe 2012 Ana.exe 2012 Ana.exe 2012 Ana.exe 2012 Ana.exe 2012 Ana.exe 2012 Ana.exe 2012 Ana.exe 1752 AV.EXE 2384 AV2.EXE -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\EN.EXE upx C:\Users\Admin\AppData\Local\Temp\DB.EXE upx behavioral1/memory/2624-48-0x0000000000400000-0x000000000040A000-memory.dmp upx behavioral1/memory/2660-45-0x0000000000400000-0x0000000000445000-memory.dmp upx behavioral1/memory/2660-38-0x00000000004B0000-0x0000000000543000-memory.dmp upx behavioral1/memory/2660-37-0x00000000004B0000-0x0000000000543000-memory.dmp upx behavioral1/memory/2660-29-0x00000000004B0000-0x0000000000543000-memory.dmp upx behavioral1/memory/2384-66-0x0000000000400000-0x00000000004C3000-memory.dmp upx behavioral1/memory/2624-68-0x0000000000400000-0x000000000040A000-memory.dmp upx behavioral1/memory/2384-74-0x0000000000400000-0x00000000004C3000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
AV.EXEdescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\{56321-2157-3235-3211} = "C:\\Users\\Admin\\AppData\\Roaming\\RtlDriver32.exe" AV.EXE -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Processes:
DB.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA DB.EXE -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
SB.EXEdescription ioc process File opened for modification \??\physicaldrive0 SB.EXE -
Drops file in System32 directory 1 IoCs
Processes:
DB.EXEdescription ioc process File created C:\Windows\SysWOW64\msdxmv.exe DB.EXE -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Processes:
AV.EXEdescription ioc process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\30530A0C86EDB1CD5A2A5FE37EF3BF28E69BE16D\Blob = 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 AV.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\30530A0C86EDB1CD5A2A5FE37EF3BF28E69BE16D AV.EXE -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
DB.EXEAV2.EXEpid process 2660 DB.EXE 2660 DB.EXE 2384 AV2.EXE 2384 AV2.EXE 2384 AV2.EXE 2384 AV2.EXE 2384 AV2.EXE 2384 AV2.EXE -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
DB.EXESB.EXEAV2.EXEdescription pid process Token: SeDebugPrivilege 2660 DB.EXE Token: SeShutdownPrivilege 2740 SB.EXE Token: SeDebugPrivilege 2384 AV2.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
AV.EXERtlDriver32.exepid process 1752 AV.EXE 2416 RtlDriver32.exe -
Suspicious use of SendNotifyMessage 2 IoCs
Processes:
AV.EXERtlDriver32.exepid process 1752 AV.EXE 2416 RtlDriver32.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
Ana.exeAV.EXEdescription pid process target process PID 2012 wrote to memory of 1752 2012 Ana.exe AV.EXE PID 2012 wrote to memory of 1752 2012 Ana.exe AV.EXE PID 2012 wrote to memory of 1752 2012 Ana.exe AV.EXE PID 2012 wrote to memory of 1752 2012 Ana.exe AV.EXE PID 2012 wrote to memory of 2384 2012 Ana.exe AV2.EXE PID 2012 wrote to memory of 2384 2012 Ana.exe AV2.EXE PID 2012 wrote to memory of 2384 2012 Ana.exe AV2.EXE PID 2012 wrote to memory of 2384 2012 Ana.exe AV2.EXE PID 2012 wrote to memory of 2660 2012 Ana.exe DB.EXE PID 2012 wrote to memory of 2660 2012 Ana.exe DB.EXE PID 2012 wrote to memory of 2660 2012 Ana.exe DB.EXE PID 2012 wrote to memory of 2660 2012 Ana.exe DB.EXE PID 2012 wrote to memory of 2624 2012 Ana.exe EN.EXE PID 2012 wrote to memory of 2624 2012 Ana.exe EN.EXE PID 2012 wrote to memory of 2624 2012 Ana.exe EN.EXE PID 2012 wrote to memory of 2624 2012 Ana.exe EN.EXE PID 2012 wrote to memory of 2740 2012 Ana.exe SB.EXE PID 2012 wrote to memory of 2740 2012 Ana.exe SB.EXE PID 2012 wrote to memory of 2740 2012 Ana.exe SB.EXE PID 2012 wrote to memory of 2740 2012 Ana.exe SB.EXE PID 1752 wrote to memory of 2416 1752 AV.EXE RtlDriver32.exe PID 1752 wrote to memory of 2416 1752 AV.EXE RtlDriver32.exe PID 1752 wrote to memory of 2416 1752 AV.EXE RtlDriver32.exe PID 1752 wrote to memory of 2416 1752 AV.EXE RtlDriver32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Ana.exe"C:\Users\Admin\AppData\Local\Temp\Ana.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\AV.EXE"C:\Users\Admin\AppData\Local\Temp\AV.EXE"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Modifies system certificate store
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\RtlDriver32.exe"C:\Users\Admin\AppData\Roaming\RtlDriver32.exe"3⤵
- Executes dropped EXE
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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C:\Users\Admin\AppData\Local\Temp\AV2.EXE"C:\Users\Admin\AppData\Local\Temp\AV2.EXE"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\pH17766MjGaO17766\pH17766MjGaO17766.exe"\pH17766MjGaO17766\pH17766MjGaO17766.exe" "C:\Users\Admin\AppData\Local\Temp\AV2.EXE"3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\DB.EXE"C:\Users\Admin\AppData\Local\Temp\DB.EXE"2⤵
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exe/c C:\Users\Admin\AppData\Local\Temp\~unins8352.bat "C:\Users\Admin\AppData\Local\Temp\DB.EXE"3⤵
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C:\Users\Admin\AppData\Local\Temp\EN.EXE"C:\Users\Admin\AppData\Local\Temp\EN.EXE"2⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\SB.EXE"C:\Users\Admin\AppData\Local\Temp\SB.EXE"2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\AV2Filesize
208B
MD5a22bf3a89a98c7373a035c9310c6a6c1
SHA110435cdd3a83b66e6ff3fb2b3b7c614c36895e11
SHA256f794e0ff4feb98193a122c1baedca3747a7f9a1a49a692ca6e2e48dcde74ce6e
SHA512ecb1cf1cf9977f2accaff25ce8416d6af06d578bf694f93eb1fd604f548269c763b9376e8aea6d26d9b72170b73083636dc26f0bab46dc0f3aae655497633387
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C:\Users\Admin\AppData\Local\Temp\AV2.EXEFilesize
368KB
MD5014578edb7da99e5ba8dd84f5d26dfd5
SHA1df56d701165a480e925a153856cbc3ab799c5a04
SHA2564ce5e8b510895abb204f97e883d8cbaacc29ccef0844d9ae81f8666f234b0529
SHA512bd5159af96d83fc7528956c5b1bd6f93847db18faa0680c6041f87bbebef5e3ba2de1f185d77ff28b8d7d78ec4f7bd54f48b37a16da39f43314ef022b4a36068
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C:\Users\Admin\AppData\Local\Temp\DB.EXEFilesize
243KB
MD5c6746a62feafcb4fca301f606f7101fa
SHA1e09cd1382f9ceec027083b40e35f5f3d184e485f
SHA256b5a255d0454853c8afc0b321e1d86dca22c3dbefb88e5d385d2d72f9bc0109e6
SHA512ee5dfa08c86bf1524666f0851c729970dbf0b397db9595a2bae01516299344edb68123e976592a83e492f2982fafe8d350ba2d41368eb4ecf4e6fe12af8f5642
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C:\Users\Admin\AppData\Local\Temp\EN.EXEFilesize
6KB
MD5621f2279f69686e8547e476b642b6c46
SHA166f486cd566f86ab16015fe74f50d4515decce88
SHA256c17a18cf2c243303b8a6688aad83b3e6e9b727fcd89f69065785ef7f1a2a3e38
SHA512068402b02f1056b722f21b0a354b038f094d02e4a066b332553cd6b36e3640e8f35aa0499a2b057c566718c3593d3cea6bbabd961e04f0a001fd45d8be8e1c4e
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C:\Users\Admin\AppData\Local\Temp\tsa.crtFilesize
1010B
MD56e630504be525e953debd0ce831b9aa0
SHA1edfa47b3edf98af94954b5b0850286a324608503
SHA2562563fe2f793f119a1bae5cca6eab9d8c20409aa1f1e0db341c623e1251244ef5
SHA512bbcf285309a4d5605e19513c77ef077a4c451cbef04e3cbdfec6d15cc157a9800a7ff6f70964b0452ddb939ff50766e887904eda06a9999fdedf5b2e8776ebd2
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\Users\Admin\AppData\Local\Temp\AV.EXEFilesize
1.1MB
MD5f284568010505119f479617a2e7dc189
SHA1e23707625cce0035e3c1d2255af1ed326583a1ea
SHA25626c8f13ea8dc17443a9fa005610537cb6700aebaf748e747e9278d504e416eb1
SHA512ebe96e667dfde547c5a450b97cd7534b977f4073c7f4cbc123a0e00baaefeb3be725c1cafbfb5bb040b3359267954cd1b4e2094ef71fc273732016ee822064bf
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\Users\Admin\AppData\Local\Temp\SB.EXEFilesize
224KB
MD59252e1be9776af202d6ad5c093637022
SHA16cc686d837cd633d9c2e8bc1eaba5fc364bf71d8
SHA256ce822ff86e584f15b6abd14c61453bd3b481d4ec3fdeb961787fceb52acd8bd6
SHA51298b1b3ce4d16d36f738478c6cf41e8f4a57d3a5ecfa8999d45592f79a469d8af8554bf4d5db34cb79cec71ce103f4fde1b41bd3cce30714f803e432e53da71ea
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\pH17766MjGaO17766\pH17766MjGaO17766.exeFilesize
368KB
MD509410a8cd88eb66df981caa816588043
SHA11c398bee1b5d82323a6187c49269b677ddb01378
SHA256669a2d270f73cfe06a45343c82e3f0ba4a6118b90b2332760ffd086a89880872
SHA51248818c3826d46dee7675650ecf7b25971d9ce8ce2876f6b50cd68811a2363bb5481747b516b3eaad35ef3399dce864b139618062d0d3b05d63f14bb62f615d9d
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memory/1752-56-0x0000000000690000-0x00000000006D0000-memory.dmpFilesize
256KB
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memory/2012-47-0x0000000000500000-0x000000000050A000-memory.dmpFilesize
40KB
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memory/2012-44-0x0000000000500000-0x0000000000545000-memory.dmpFilesize
276KB
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memory/2012-46-0x0000000000500000-0x000000000050A000-memory.dmpFilesize
40KB
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memory/2384-83-0x00000000003C0000-0x00000000003C1000-memory.dmpFilesize
4KB
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memory/2384-74-0x0000000000400000-0x00000000004C3000-memory.dmpFilesize
780KB
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memory/2384-66-0x0000000000400000-0x00000000004C3000-memory.dmpFilesize
780KB
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memory/2624-48-0x0000000000400000-0x000000000040A000-memory.dmpFilesize
40KB
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memory/2624-68-0x0000000000400000-0x000000000040A000-memory.dmpFilesize
40KB
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memory/2660-29-0x00000000004B0000-0x0000000000543000-memory.dmpFilesize
588KB
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memory/2660-37-0x00000000004B0000-0x0000000000543000-memory.dmpFilesize
588KB
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memory/2660-38-0x00000000004B0000-0x0000000000543000-memory.dmpFilesize
588KB
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memory/2660-45-0x0000000000400000-0x0000000000445000-memory.dmpFilesize
276KB
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memory/2740-69-0x0000000000400000-0x0000000000464000-memory.dmpFilesize
400KB