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Analysis
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max time kernel
161s -
max time network
168s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
26/03/2024, 17:21
Behavioral task
behavioral1
Sample
dfb302bfe2528e489185cc87b2227de3.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
dfb302bfe2528e489185cc87b2227de3.exe
Resource
win10v2004-20240226-en
General
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Target
dfb302bfe2528e489185cc87b2227de3.exe
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Size
123KB
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MD5
dfb302bfe2528e489185cc87b2227de3
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SHA1
ff7233ad153e909de680ba4ee447f79b440257db
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SHA256
50dd0b8abea5688d7633b40d5722909535101cf816bff9b77a65cbb0764ac80d
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SHA512
de75d925831a1fff402d1a60342e9126971ad2adb15ff7dcd2d75a82fc6bf4dd060d7e8210de59873fa71e78e9a69c19a231d789c4f41e157fa0c8242e51edf3
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SSDEEP
3072:OeSQ41MZrrOwzrq5Ss9eYfphfFQkUcot3EpeBWLLtK:OVYrJrOSsRwcpLK
Malware Config
Signatures
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Manipulates Digital Signatures 1 TTPs 1 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 (data) \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\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 behavioral2/files/0x000700000002321f-26.dat acprotect -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation iaccess32.exe -
Executes dropped EXE 1 IoCs
pid Process 4620 iaccess32.exe -
Loads dropped DLL 1 IoCs
pid Process 4876 regsvr32.exe -
resource yara_rule behavioral2/memory/3544-0-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x00050000000224ff-3.dat upx behavioral2/memory/3544-5-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4620-4-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x000700000002321f-26.dat upx behavioral2/memory/4620-58-0x0000000000400000-0x000000000042E000-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\Multi\20100709210709\dialerexe.ini iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100709210709\instant access.exe iaccess32.exe File created C:\Program Files (x86)\Instant Access\Center\NOCREDITCARD.lnk iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100709210709\Common\module.php iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e.ico iaccess32.exe File opened for modification C:\Program Files (x86)\Instant Access\Multi\20100709210709\dialerexe.ini iaccess32.exe File created C:\Program Files (x86)\Instant Access\DesktopIcons\NOCREDITCARD.lnk iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e_1_3.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e_go_3.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e_3_3.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e_logo_2.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e_2_3.gif iaccess32.exe File opened for modification C:\Program Files (x86)\Instant Access\Center\NOCREDITCARD.lnk iaccess32.exe -
Drops file in Windows directory 6 IoCs
description ioc Process 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 dfb302bfe2528e489185cc87b2227de3.exe File created C:\Windows\tmlpcert2007 iaccess32.exe File created C:\Windows\dialexe.zl iaccess32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2" iaccess32.exe Key created \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iaccess32.exe Set value (str) \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iaccess32.exe Key created \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Software\Microsoft\Internet Explorer\IESettingSync iaccess32.exe -
Modifies data under HKEY_USERS 1 IoCs
description ioc Process Key created \REGISTRY\USER\À iaccess32.exe -
Modifies registry class 4 IoCs
description ioc Process 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 Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{413E282B-C32A-4717-A0F3-4F2E6FE25F83} regsvr32.exe -
Runs regedit.exe 1 IoCs
pid Process 1476 regedit.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3544 dfb302bfe2528e489185cc87b2227de3.exe 4620 iaccess32.exe 4620 iaccess32.exe 4620 iaccess32.exe 4620 iaccess32.exe 4620 iaccess32.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 3544 wrote to memory of 4620 3544 dfb302bfe2528e489185cc87b2227de3.exe 88 PID 3544 wrote to memory of 4620 3544 dfb302bfe2528e489185cc87b2227de3.exe 88 PID 3544 wrote to memory of 4620 3544 dfb302bfe2528e489185cc87b2227de3.exe 88 PID 4620 wrote to memory of 1476 4620 iaccess32.exe 91 PID 4620 wrote to memory of 1476 4620 iaccess32.exe 91 PID 4620 wrote to memory of 1476 4620 iaccess32.exe 91 PID 4620 wrote to memory of 4876 4620 iaccess32.exe 92 PID 4620 wrote to memory of 4876 4620 iaccess32.exe 92 PID 4620 wrote to memory of 4876 4620 iaccess32.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\dfb302bfe2528e489185cc87b2227de3.exe"C:\Users\Admin\AppData\Local\Temp\dfb302bfe2528e489185cc87b2227de3.exe"1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3544 -
C:\Windows\iaccess32.exeC:\Windows\iaccess32.exe2⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4620 -
C:\Windows\SysWOW64\regedit.exe"C:\Windows\System32\regedit.exe" /s C:\Windows\tmlpcert20073⤵
- Manipulates Digital Signatures
- Runs regedit.exe
PID:1476
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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:4876
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv1⤵PID:4928
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5237ae9e26545d0a7f130cc7c756fe82d
SHA15548197cbe4ae6d9056230e4a59dd916c026bb1f
SHA256eb6bce9c84a926f5f4881a581eb7fc2568b8e183ea5cc85e808c8f9324a6c5e1
SHA512b3438292945836878e7feefcaf8b423f83dd7d4172e09e53fa7a86308112679ed105c04e0a90100ae33c0a69ccbfdbf05d0323cf629c7304b30929ba4aceae61
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Filesize
2KB
MD5c3746d5e60dd9c93e833a2a234ac2b75
SHA16899e680929e7b0a8d2bc591b184f19b390be0c9
SHA2563786d48bbafedef6c31d23c229f05352a801ce253c6a99b74e47b0534a333a26
SHA512ed480ee779a5116549c892bffa465ac55ff0e463e41833aff85340b84c5326c3c9360d0a51f27de647e822938aad0f7362b13d4bfc540f7d61daed5732d82d70
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Filesize
76KB
MD5b83f652ffa76451ae438954f89c02f62
SHA1b3ba0014dd16cee5f6d4cfe7e28b2d5de79dc6dd
SHA256f601991aa00cbe7001197affc0e3854ab76c51c05b9a6ca3e3f708fed876c32f
SHA512965172a5ecd070ea6707ec9985ee3c135c06534561b90ae233e8049b247d87d529b8280f0faf2b0ed933f59c68844414726fa80c4d3119cffa4fdd1cb60eab83
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Filesize
587B
MD592fc8e9fba327cdca54390ada5742ec8
SHA118e2dce596c32419e094c67ec4279a2b98d8fc69
SHA2562cc87510c8b99bc6ee815b8e721c99503b813e8976eab53f48160f7c04664d2a
SHA512ce193bfa8102bc8f695edf7053799c2f1acca1f16658d9c91cacf7622e1041ea9f7ecf51abdbc0a4e36ee96e04edd96081d5cc0efda5a2070a3c806e7094eb2b
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Filesize
123KB
MD5e4ac874839b0cd83022fff3a714fa645
SHA1324c680fb411734e1a059007f509134057dbfcdc
SHA256cdd1ff98f0c6a12bf8cec67b59443fdb90f1f93e0ffc271888b663c1f62cc844
SHA51287901dce853e5807f1197f369d0eb35e8248ee05f547ef9db9b48469491e3463f0c6707e5f9d1cf9680494faf7741cfd295a9922da0d497e6aebe057d2a98892
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Filesize
6KB
MD5b103757bc3c714123b5efa26ff96a915
SHA1991d6694c71736b59b9486339be44ae5e2b66fef
SHA256eef8937445f24c2bcbe101419be42694e0e38628653a755ab29ecba357d81d48
SHA512d04f2ab14ad4d3e06ea357b4c810515d73b32f2650533a5895ebf5d14b4b697752f25c0c371372e00faab661c0b051c33b8c25bf1226f30be5d6b8727dea81e1