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Analysis
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max time kernel
144s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
26/03/2024, 19:27
Behavioral task
behavioral1
Sample
dfebefc81ff134008b7d31129a6f5e55.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
dfebefc81ff134008b7d31129a6f5e55.exe
Resource
win10v2004-20231215-en
General
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Target
dfebefc81ff134008b7d31129a6f5e55.exe
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Size
123KB
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MD5
dfebefc81ff134008b7d31129a6f5e55
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SHA1
4c7ffae365fd3d41a0fd21f0b5f5e275fe0929db
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SHA256
4a1f12f1196ba748bf9340cbff6819be87a58126968b03bca3200f456fa8385d
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SHA512
d13bc38269cab7b37fcb4f0da1a43ebbb065ae2915ed08dd98e76e4a67012f70ecfd95425d053096dedb6ec2fa08bb1747127f41afd168ecbfc94b2b4979b5aa
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SSDEEP
3072:OeSQ41MZrrOwzrq5Ss9eYfphfFQkUcot3EpeBWLLft3b:OVYrJrOSsRwcp3b
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 (data) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates\62119EF862C6B3A0D853419B87EB3E2F6C78640A\Blob = 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 regedit.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing\Trust Database\0\goicfboogidikkejccmclpieicihhlpo jimddp = "electronic-group" iaccess32.exe -
ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral1/files/0x0006000000015e9c-31.dat acprotect -
Executes dropped EXE 1 IoCs
pid Process 2100 iaccess32.exe -
Loads dropped DLL 3 IoCs
pid Process 2544 regsvr32.exe 2100 iaccess32.exe 2100 iaccess32.exe -
resource yara_rule behavioral1/memory/3028-0-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x0009000000012251-7.dat upx behavioral1/memory/3028-8-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/3028-3-0x00000000002F0000-0x000000000031E000-memory.dmp upx behavioral1/memory/2100-10-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x0006000000015e9c-31.dat upx behavioral1/memory/2544-33-0x0000000010000000-0x0000000010047000-memory.dmp upx behavioral1/memory/2100-60-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-81-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-82-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-84-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-85-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-86-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-88-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-89-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-90-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-91-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-92-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-93-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-94-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-95-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2100-96-0x0000000000400000-0x000000000042E000-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\DesktopIcons\NOCREDITCARD.lnk iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100711150706\Common\module.php iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100711150706\medias\p2e_1_3.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100711150706\medias\p2e_2_3.gif iaccess32.exe File opened for modification C:\Program Files (x86)\Instant Access\Multi\20100711150706\dialerexe.ini 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\20100711150706\medias\p2e_go_3.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100711150706\medias\p2e_3_3.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100711150706\dialerexe.ini iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100711150706\instant access.exe iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100711150706\medias\p2e_logo_2.gif iaccess32.exe File created C:\Program Files (x86)\Instant Access\Multi\20100711150706\medias\p2e.ico iaccess32.exe File created 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\dialerexe.ini iaccess32.exe File created C:\Windows\egdhtm_pack.epk iaccess32.exe File created C:\Windows\iaccess32.exe dfebefc81ff134008b7d31129a6f5e55.exe File created C:\Windows\tmlpcert2007 iaccess32.exe File created C:\Windows\dialexe.zl iaccess32.exe File created C:\Windows\dialexe.epk 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-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main iaccess32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iaccess32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\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 2556 regedit.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3028 dfebefc81ff134008b7d31129a6f5e55.exe 2100 iaccess32.exe 2100 iaccess32.exe 2100 iaccess32.exe 2100 iaccess32.exe 2100 iaccess32.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 3028 wrote to memory of 2100 3028 dfebefc81ff134008b7d31129a6f5e55.exe 28 PID 3028 wrote to memory of 2100 3028 dfebefc81ff134008b7d31129a6f5e55.exe 28 PID 3028 wrote to memory of 2100 3028 dfebefc81ff134008b7d31129a6f5e55.exe 28 PID 3028 wrote to memory of 2100 3028 dfebefc81ff134008b7d31129a6f5e55.exe 28 PID 2100 wrote to memory of 2556 2100 iaccess32.exe 29 PID 2100 wrote to memory of 2556 2100 iaccess32.exe 29 PID 2100 wrote to memory of 2556 2100 iaccess32.exe 29 PID 2100 wrote to memory of 2556 2100 iaccess32.exe 29 PID 2100 wrote to memory of 2544 2100 iaccess32.exe 30 PID 2100 wrote to memory of 2544 2100 iaccess32.exe 30 PID 2100 wrote to memory of 2544 2100 iaccess32.exe 30 PID 2100 wrote to memory of 2544 2100 iaccess32.exe 30 PID 2100 wrote to memory of 2544 2100 iaccess32.exe 30 PID 2100 wrote to memory of 2544 2100 iaccess32.exe 30 PID 2100 wrote to memory of 2544 2100 iaccess32.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\dfebefc81ff134008b7d31129a6f5e55.exe"C:\Users\Admin\AppData\Local\Temp\dfebefc81ff134008b7d31129a6f5e55.exe"1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3028 -
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:2100 -
C:\Windows\SysWOW64\regedit.exe"C:\Windows\System32\regedit.exe" /s C:\Windows\tmlpcert20073⤵
- Manipulates Digital Signatures
- Runs regedit.exe
PID:2556
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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:2544
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
587B
MD50d82c2a92cca20936efa4c9a354dff2b
SHA16a72a106ea79a150625f0b0d04a63886dc2eed49
SHA256d5c50df680d78ef1ab846b6fd861c1fc02832a2d56440072d09599e4d08df43f
SHA512c04f352b6ac5ef2d54f015aa9cf2eeacc23733e52efb5593176f27000291f5f2761bc39b8b7c5b1a8b2220bd5f5233ba94ea4ec842dda9510cfb3b95a1677187
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Filesize
76KB
MD5b83f652ffa76451ae438954f89c02f62
SHA1b3ba0014dd16cee5f6d4cfe7e28b2d5de79dc6dd
SHA256f601991aa00cbe7001197affc0e3854ab76c51c05b9a6ca3e3f708fed876c32f
SHA512965172a5ecd070ea6707ec9985ee3c135c06534561b90ae233e8049b247d87d529b8280f0faf2b0ed933f59c68844414726fa80c4d3119cffa4fdd1cb60eab83
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Filesize
123KB
MD5a167468e7874db6a0ba7d30cd5798fbf
SHA1b854856e949a39e02a6217ac3452623977803ba3
SHA2564edbacc5c2239d82da82969753214eb5b723eed8b6af1d51772cc113712a9cfa
SHA512af6de52299cfd4cbd5d3b0ebc9a9756d535672cce41519ad58b36c2df6429e00c84eeb1dca5e73650d8c9d509ab94c4f17b6afc2948fd62601f3752ec5ad9b07
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Filesize
6KB
MD5b103757bc3c714123b5efa26ff96a915
SHA1991d6694c71736b59b9486339be44ae5e2b66fef
SHA256eef8937445f24c2bcbe101419be42694e0e38628653a755ab29ecba357d81d48
SHA512d04f2ab14ad4d3e06ea357b4c810515d73b32f2650533a5895ebf5d14b4b697752f25c0c371372e00faab661c0b051c33b8c25bf1226f30be5d6b8727dea81e1