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Analysis
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max time kernel
142s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
05/01/2024, 03:32
Behavioral task
behavioral1
Sample
42a5f085cb986c0b7687afc3b050e168.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
42a5f085cb986c0b7687afc3b050e168.exe
Resource
win10v2004-20231215-en
General
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Target
42a5f085cb986c0b7687afc3b050e168.exe
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Size
123KB
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MD5
42a5f085cb986c0b7687afc3b050e168
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SHA1
7538dcb9489b66b34ac5fe9d537c4bf0b1550700
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SHA256
7e85c66482d4209bbf5706d1e1954549cc45ed4133b992abbcf36c27c1a5b9af
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SHA512
4e39bb2e7af019788e5ce78d6d9f92ef6e550ad5312ce8a480f0635430e2affed3af886c6b15b6249f687445622dcad9b95d248d3980d9b5b4d3cb5cd5704ef5
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SSDEEP
3072:OeSQ41MZrrOwzrq5Ss9eYfphfFQkUcot3EpeBWLLM8M:OVYrJrOSsRwcpY
Malware Config
Signatures
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Manipulates Digital Signatures 1 TTPs 2 IoCs
Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing\Trust Database\0\goicfboogidikkejccmclpieicihhlpo jimddp = "electronic-group" iaccess32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates\62119EF862C6B3A0D853419B87EB3E2F6C78640A\Blob = 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 regedit.exe -
ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral1/files/0x0005000000019340-30.dat acprotect -
Executes dropped EXE 1 IoCs
pid Process 2756 iaccess32.exe -
Loads dropped DLL 3 IoCs
pid Process 2708 regsvr32.exe 2756 iaccess32.exe 2756 iaccess32.exe -
resource yara_rule behavioral1/memory/2256-0-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x000a000000012247-8.dat upx behavioral1/memory/2256-7-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-9-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2256-3-0x0000000000370000-0x000000000039E000-memory.dmp upx behavioral1/files/0x0005000000019340-30.dat upx behavioral1/memory/2708-32-0x0000000010000000-0x0000000010047000-memory.dmp upx behavioral1/memory/2756-79-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-81-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-82-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-85-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-86-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-87-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-88-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-90-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-91-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-92-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-93-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-94-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-95-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-96-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2756-97-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\egaccess4_1071.dll iaccess32.exe -
Drops file in Program Files directory 13 IoCs
description ioc Process File created C:\Program Files (x86)\Instant Access\Center\NOCREDITCARD.lnk iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100712210726\medias\p2e_2_3.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100712210726\medias\p2e_logo_2.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100712210726\medias\p2e_1_3.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100712210726\instant access.exe iaccess32.exe File opened for modification C:\Program Files (x86)\Instant Access\Center\NOCREDITCARD.lnk iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100712210726\Common\module.php iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100712210726\medias\p2e_go_3.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100712210726\medias\p2e_3_3.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100712210726\medias\p2e.ico iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100712210726\dialerexe.ini iaccess32.exe File opened for modification C:\Program Files (x86)\Instant Access\Multi\20100712210726\dialerexe.ini iaccess32.exe File created C:\Program Files (x86)\Instant Access\DesktopIcons\NOCREDITCARD.lnk iaccess32.exe -
Drops file in Windows directory 6 IoCs
description ioc Process File created C:\Windows\dialexe.zl iaccess32.exe File created C:\Windows\dialexe.epk iaccess32.exe File created C:\Windows\dialerexe.ini iaccess32.exe File created C:\Windows\egdhtm_pack.epk iaccess32.exe File created C:\Windows\iaccess32.exe 42a5f085cb986c0b7687afc3b050e168.exe File created C:\Windows\tmlpcert2007 iaccess32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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description ioc Process Key created \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Internet Explorer\Main iaccess32.exe Key created \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iaccess32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iaccess32.exe -
Modifies registry class 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{413E282B-C32A-4717-A0F3-4F2E6FE25F83} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{413E282B-C32A-4717-A0F3-4F2E6FE25F83}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{413E282B-C32A-4717-A0F3-4F2E6FE25F83}\InprocServer32\ = "C:\\Windows\\SysWow64\\egaccess4_1071.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{413E282B-C32A-4717-A0F3-4F2E6FE25F83}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe -
Runs regedit.exe 1 IoCs
pid Process 2788 regedit.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 2256 42a5f085cb986c0b7687afc3b050e168.exe 2756 iaccess32.exe 2756 iaccess32.exe 2756 iaccess32.exe 2756 iaccess32.exe 2756 iaccess32.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 2256 wrote to memory of 2756 2256 42a5f085cb986c0b7687afc3b050e168.exe 28 PID 2256 wrote to memory of 2756 2256 42a5f085cb986c0b7687afc3b050e168.exe 28 PID 2256 wrote to memory of 2756 2256 42a5f085cb986c0b7687afc3b050e168.exe 28 PID 2256 wrote to memory of 2756 2256 42a5f085cb986c0b7687afc3b050e168.exe 28 PID 2756 wrote to memory of 2788 2756 iaccess32.exe 29 PID 2756 wrote to memory of 2788 2756 iaccess32.exe 29 PID 2756 wrote to memory of 2788 2756 iaccess32.exe 29 PID 2756 wrote to memory of 2788 2756 iaccess32.exe 29 PID 2756 wrote to memory of 2708 2756 iaccess32.exe 30 PID 2756 wrote to memory of 2708 2756 iaccess32.exe 30 PID 2756 wrote to memory of 2708 2756 iaccess32.exe 30 PID 2756 wrote to memory of 2708 2756 iaccess32.exe 30 PID 2756 wrote to memory of 2708 2756 iaccess32.exe 30 PID 2756 wrote to memory of 2708 2756 iaccess32.exe 30 PID 2756 wrote to memory of 2708 2756 iaccess32.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\42a5f085cb986c0b7687afc3b050e168.exe"C:\Users\Admin\AppData\Local\Temp\42a5f085cb986c0b7687afc3b050e168.exe"1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2256 -
C:\Windows\iaccess32.exeC:\Windows\iaccess32.exe2⤵
- Manipulates Digital Signatures
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2756 -
C:\Windows\SysWOW64\regedit.exe"C:\Windows\System32\regedit.exe" /s C:\Windows\tmlpcert20073⤵
- Manipulates Digital Signatures
- Runs regedit.exe
PID:2788
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C:\Windows\SysWOW64\regsvr32.exeregsvr32.exe /s "C:\Windows\system32\egaccess4_1071.dll"3⤵
- Loads dropped DLL
- Modifies registry class
PID:2708
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
587B
MD55a6fa2e12af778d3239158db7a6ecdbe
SHA1c75735bb1a9441558f1948390df57c7915bebca8
SHA25698e1331eb2dd3ed03479c5d8bef8feac5efaa1f55f7cb26c0d21372161e6c397
SHA512a178380f00e63a69cb21f61a9ce5c74d4fd677a503c95970f28ab9b5195ec3753fe5dd67cd0fc462bd45bf8294fabdb0f5581874c3cded76c4f22d0e6ee73656
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Filesize
2KB
MD55a54a7616a2b1ed09e6b9261bbbec271
SHA11eee0f24c70a588d1703873616403682ca9d0490
SHA2568b3a5f651d52cdb774f88a58c065e4483226169ebd5b2a05f2759429ff6c9b86
SHA512a288e64d64ecdf75674fca036a6ee7c472574855e626898aec6fd631ae6f6f91b9b1c5826e916c6065b8fd76591efa4ead95e7798d22403861f293af5561c301
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Filesize
76KB
MD5b83f652ffa76451ae438954f89c02f62
SHA1b3ba0014dd16cee5f6d4cfe7e28b2d5de79dc6dd
SHA256f601991aa00cbe7001197affc0e3854ab76c51c05b9a6ca3e3f708fed876c32f
SHA512965172a5ecd070ea6707ec9985ee3c135c06534561b90ae233e8049b247d87d529b8280f0faf2b0ed933f59c68844414726fa80c4d3119cffa4fdd1cb60eab83
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Filesize
123KB
MD5cd92dc9ce9371640f4db85851f23b073
SHA12d531e44aeaeb2b3eedc8ea7929644bfd406164b
SHA256bef5ebcf822e6010fb495dfdca8bc0e551ff38e93682750d26f53865148d4032
SHA512c2c134a94c2a45bd9b242230c558c164929a85e1830f4af611687977e48c776d8762a6173cd58d26a9af21321f96e9421f65e419e147d5342f947c5154b33170
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Filesize
6KB
MD5b103757bc3c714123b5efa26ff96a915
SHA1991d6694c71736b59b9486339be44ae5e2b66fef
SHA256eef8937445f24c2bcbe101419be42694e0e38628653a755ab29ecba357d81d48
SHA512d04f2ab14ad4d3e06ea357b4c810515d73b32f2650533a5895ebf5d14b4b697752f25c0c371372e00faab661c0b051c33b8c25bf1226f30be5d6b8727dea81e1