Analysis
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max time kernel
149s -
max time network
157s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
03/10/2022, 03:27
Static task
static1
Behavioral task
behavioral1
Sample
91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe
Resource
win10v2004-20220812-en
General
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Target
91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe
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Size
861KB
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MD5
68636da56c83715de2290164bcf756b0
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SHA1
5db1c14809b1573a7ee7625db8e8cb23c02f8983
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SHA256
91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac
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SHA512
a006f38b32e7ad671264f4317c2f7293a78826cce5a937b893dc1466af8be3ae67032a7b89ce144768c1a5a32abe355a5fb7b2f9a96b42f3fcdb3387a121f098
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SSDEEP
24576:MRmJkcoQricOIQxiZY1iaC3bqaR5/cT0hO:ZJZoQrbTFZY1iaCNQ
Malware Config
Signatures
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Deletes itself 1 IoCs
pid Process 1376 iexplore.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Txtfty = "C:\\Users\\Admin\\AppData\\Roaming\\Txtfty.exe" iexplore.exe -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\D: iexplore.exe -
AutoIT Executable 2 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule behavioral1/memory/364-54-0x0000000000400000-0x00000000004C8000-memory.dmp autoit_exe behavioral1/memory/364-71-0x0000000000400000-0x00000000004C8000-memory.dmp autoit_exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 364 set thread context of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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description ioc Process Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371560950" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{39EC1350-430D-11ED-8B83-6A6CB2F85B9F} = "0" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IETld\LowMic IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Zoom IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IntelliForms IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\InternetRegistry IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\PageSetup IEXPLORE.EXE -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1708 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1708 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe Token: SeDebugPrivilege 1376 iexplore.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1416 IEXPLORE.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 1416 IEXPLORE.EXE 1416 IEXPLORE.EXE 1232 IEXPLORE.EXE 1232 IEXPLORE.EXE 1232 IEXPLORE.EXE 1232 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 364 wrote to memory of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 PID 364 wrote to memory of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 PID 364 wrote to memory of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 PID 364 wrote to memory of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 PID 364 wrote to memory of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 PID 364 wrote to memory of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 PID 364 wrote to memory of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 PID 364 wrote to memory of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 PID 364 wrote to memory of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 PID 364 wrote to memory of 1708 364 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 26 PID 1708 wrote to memory of 1376 1708 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 27 PID 1708 wrote to memory of 1376 1708 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 27 PID 1708 wrote to memory of 1376 1708 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 27 PID 1708 wrote to memory of 1376 1708 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 27 PID 1376 wrote to memory of 1416 1376 iexplore.exe 28 PID 1376 wrote to memory of 1416 1376 iexplore.exe 28 PID 1376 wrote to memory of 1416 1376 iexplore.exe 28 PID 1376 wrote to memory of 1416 1376 iexplore.exe 28 PID 1708 wrote to memory of 1376 1708 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 27 PID 1708 wrote to memory of 1376 1708 91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe 27 PID 1416 wrote to memory of 1232 1416 IEXPLORE.EXE 30 PID 1416 wrote to memory of 1232 1416 IEXPLORE.EXE 30 PID 1416 wrote to memory of 1232 1416 IEXPLORE.EXE 30 PID 1416 wrote to memory of 1232 1416 IEXPLORE.EXE 30
Processes
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C:\Users\Admin\AppData\Local\Temp\91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe"C:\Users\Admin\AppData\Local\Temp\91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:364 -
C:\Users\Admin\AppData\Local\Temp\91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe"C:\Users\Admin\AppData\Local\Temp\91c414d0f1a677d6d3bd7d890300720a57404a0c943ed99562f93ae7ac9098ac.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1708 -
C:\Program Files (x86)\Internet Explorer\iexplore.exe"C:\Program Files (x86)\Internet Explorer\iexplore.exe"3⤵
- Deletes itself
- Adds Run key to start application
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1376 -
C:\Program Files\Internet Explorer\IEXPLORE.EXE"C:\Program Files\Internet Explorer\IEXPLORE.EXE"4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1416 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1416 CREDAT:275457 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1232
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
597B
MD592634ead356e59fa7024658aae62a278
SHA1be98565ed97632215036846aa80b7a35ef89c299
SHA256c9cf2a1b6e844fdb766567153754a5aec7abb9de6e4925c0914b1b9c9cbb3860
SHA512a2c4019701504217b53199b464e160f010ec9a4951b623d8418ae5519897d180e616140be507804700e915134a6fe715aab70722717367d8f76c6ac88aef1a53