Analysis
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max time kernel
151s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
21/10/2022, 01:59
Behavioral task
behavioral1
Sample
3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe
Resource
win10v2004-20220901-en
General
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Target
3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe
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Size
43KB
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MD5
48e8f2d02325efc478077b9c36eea2c7
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SHA1
a6e42979450ee8864d2e278677e72afe79eed705
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SHA256
3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913
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SHA512
f4e92864f04d56852731ba91d640ce2ef30dc8e5ed327e43e4b5d25f4f0d06cc07caf82eb86ee281fe852db2492d519df9f1418659df82a44b8d1dc6f786c873
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SSDEEP
768:yM8E/YC30zLP70lgrL9HI/ONvRCQ7UdBuOCUgNXmXHN:NYC38bgg9GQ7+CU4XmXHN
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 3772 TenSafe.exe -
resource yara_rule behavioral2/memory/2432-132-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/files/0x0002000000022df7-136.dat upx behavioral2/files/0x0002000000022df7-137.dat upx behavioral2/memory/3772-140-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/memory/2432-215-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/memory/3772-216-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/memory/2432-219-0x0000000000400000-0x000000000041E000-memory.dmp upx -
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.
description ioc Process File opened for modification \??\PhysicalDrive0 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\TenSafe.exe 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe File opened for modification C:\Windows\TenSafe.exe 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 309b372027e5d801 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{4902F250-511A-11ED-A0EE-C243EF799EB6} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30991655" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000043e2eb2e51ccf149ab640c8bdb0d790600000000020000000000106600000001000020000000ed675651530aac0d002247c9143b2bf45b749adfb23162f9d6341299d920ca03000000000e8000000002000020000000dd6f4e568e9adc5c913ab8acfc8278656f11fd186f099013a56614442983116e200000000387beb0ed149c1130deda087589abc12a395aa68b4872db13d318821ce402d0400000008fe42362f8d30fd1908e8853cc6295a1aaf4e72f389dfb9a2d816cede95078ad145c0f4ede398df787df0abde468bb744c13f5141e7203e6d792a255eedc537a iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373105862" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30991655" IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 50b42b2027e5d801 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "513963000" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000043e2eb2e51ccf149ab640c8bdb0d79060000000002000000000010660000000100002000000052a92d4a8dc654bba0310964117d6eda534344c4865ccd2914ebc403a0ac8ef7000000000e80000000020000200000000829485d8989ef69eed332e82f7aea36d89c7e11fdea0eb6eb4ec395e132a0c720000000057b4bf0731309aa90ce9c8a765561b767ba96f0e25bc3040fd7bd764819868340000000a81e1cde925ba7d2b6a4db6998e3ead61aa9ac0add7aa93c799d2278eb1808ae0eb9777a35bf1f488e06e58a6071b8b44d8b35bdd7ad3d54acb3a94300fe72c4 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "498962167" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "498962167" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30991655" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2432 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe 2432 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1444 iexplore.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1444 iexplore.exe 3772 TenSafe.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 2432 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe 3772 TenSafe.exe 1444 iexplore.exe 1444 iexplore.exe 364 IEXPLORE.EXE 364 IEXPLORE.EXE 364 IEXPLORE.EXE 364 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2432 wrote to memory of 3772 2432 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe 83 PID 2432 wrote to memory of 3772 2432 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe 83 PID 2432 wrote to memory of 3772 2432 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe 83 PID 2432 wrote to memory of 1444 2432 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe 84 PID 2432 wrote to memory of 1444 2432 3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe 84 PID 1444 wrote to memory of 364 1444 iexplore.exe 85 PID 1444 wrote to memory of 364 1444 iexplore.exe 85 PID 1444 wrote to memory of 364 1444 iexplore.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe"C:\Users\Admin\AppData\Local\Temp\3d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913.exe"1⤵
- Writes to the Master Boot Record (MBR)
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2432 -
C:\Windows\TenSafe.exeC:\Windows\TenSafe.exe auto2⤵
- Executes dropped EXE
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:3772
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C:\progra~1\Intern~1\iexplore.exeC:\\progra~1\\Intern~1\\iexplore.exe http://jianqiangzhe.com/AddSetup.asp?57;€UQ44457€7€5436536466$<>6<>4:$EQ€<82⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1444 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1444 CREDAT:17410 /prefetch:23⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:364
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD56a15e3564b9eb382fe5534f59d6fccb4
SHA1911dbc1a988c2d6816beb0c21c4ea5402253b884
SHA2566b478c66c9a2024177d4a478ccea9a82f3162aa87a5125a0dc3750c920bdbc62
SHA5122801f46d495eed08dbb10e73ccda4828faf4ef6b1ff3ff45ce8d73331e692381c25417d15c958f8c3f9c6932300cd0e66b1aad6bb5a92e2bf27b338b6d245711
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize434B
MD5665fc2927dc40190e8e2611c23fb2397
SHA19df355824e0fec794d20cadea3daee3175bda3a8
SHA256d55f8ffce111d5bd41dfe5965bb2381bc9049e44040e100db5fd8449b1e50da1
SHA512e0156d1f8177e3909ad31f2a4a7c1d6a368fc2a699d4dfd6bce983e829af431462817c39511dd4f8b82e7d108c1a7ec098977a9d4ecfb667f319b0a69934bac6
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Filesize
43KB
MD548e8f2d02325efc478077b9c36eea2c7
SHA1a6e42979450ee8864d2e278677e72afe79eed705
SHA2563d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913
SHA512f4e92864f04d56852731ba91d640ce2ef30dc8e5ed327e43e4b5d25f4f0d06cc07caf82eb86ee281fe852db2492d519df9f1418659df82a44b8d1dc6f786c873
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Filesize
43KB
MD548e8f2d02325efc478077b9c36eea2c7
SHA1a6e42979450ee8864d2e278677e72afe79eed705
SHA2563d99609d29ff105fb98e742e269ff7ba4bc660c3378ea261eada1ecb62c56913
SHA512f4e92864f04d56852731ba91d640ce2ef30dc8e5ed327e43e4b5d25f4f0d06cc07caf82eb86ee281fe852db2492d519df9f1418659df82a44b8d1dc6f786c873