Analysis
- max time kernel
210s - max time network
214s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
23/04/2024, 19:27
Static task
static1
Behavioral task
behavioral1
Sample
hjc.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
hjc.exe
Resource
win10v2004-20240226-en
General
- Target hjc.exe
- Size 1.6MB
- Sample240423-x6c3dabb85
- SHA256 e1cecfcc4eed2f4b74af7d971dcf24555534db164ddb0b7cd1e821b2f0402703
- MD5 da7c2473b5c455f25f420827af596286
- SHA1 101b5f991a26fc9213c4445bd9bfdb87a6a6c5cb
- SHA512 cd6b9cd996c3bca3aa0be5d0cebebb7db1701878d5c62354d6df4c880d4af8007c95baf7f0ac9e75b099c7b3573dc23afa3a872213a9963b84c86028e6969959
- SSDEEP 24576:7MkT4gLKu9KKozJQd/HJNRO/B8M6wIJp4m+3bu8U2flxAv:QkTpT9K1mzy8M6wW4mEQ2W
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
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remcos
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RemoteHost
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oceansss.duckdns.org:1144
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
true
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
fgdghrd
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mouse_option
false
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mutex
Rmc-VLI916
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
- ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
- ModiLoader Second Stage 2 IoCs
resource yara_rule behavioral2/memory/2548-2-0x0000000002E30000-0x0000000003E30000-memory.dmp modiloader_stage2 behavioral2/memory/4612-65-0x0000000002DE0000-0x0000000003DE0000-memory.dmp modiloader_stage2 - NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/3404-103-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView behavioral2/memory/3404-113-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView - NirSoft WebBrowserPassView 2 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral2/memory/3540-101-0x0000000000400000-0x0000000000478000-memory.dmp WebBrowserPassView behavioral2/memory/3540-122-0x0000000000400000-0x0000000000478000-memory.dmp WebBrowserPassView - Nirsoft 6 IoCs
resource yara_rule behavioral2/memory/3404-103-0x0000000000400000-0x0000000000462000-memory.dmp Nirsoft behavioral2/memory/2096-107-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral2/memory/3540-101-0x0000000000400000-0x0000000000478000-memory.dmp Nirsoft behavioral2/memory/2096-112-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral2/memory/3404-113-0x0000000000400000-0x0000000000462000-memory.dmp Nirsoft behavioral2/memory/3540-122-0x0000000000400000-0x0000000000478000-memory.dmp Nirsoft - 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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation hjc.exe - Executes dropped EXE 6 IoCs
pid Process 1612 easinvoker.exe 4136 alpha.exe 4612 remcos.exe 3540 remcos.exe 3404 remcos.exe 2096 remcos.exe - Loads dropped DLL 1 IoCs
pid Process 1612 easinvoker.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts remcos.exe - Adds Run key to start application 2 TTPs 5 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cmzcxhwn = "C:\\Users\\Public\\Cmzcxhwn.url" hjc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-VLI916 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" hjc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-VLI916 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" hjc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-VLI916 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" remcos.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-VLI916 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" remcos.exe - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4612 set thread context of 3540 4612 remcos.exe 116 PID 4612 set thread context of 3404 4612 remcos.exe 117 PID 4612 set thread context of 2096 4612 remcos.exe 118 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier xcopy.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier xcopy.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier xcopy.exe - Script User-Agent 4 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 19 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) HTTP User-Agent header 21 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) HTTP User-Agent header 52 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) HTTP User-Agent header 55 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) - Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 1564 powershell.exe 1564 powershell.exe 3540 remcos.exe 3540 remcos.exe 2096 remcos.exe 2096 remcos.exe 3540 remcos.exe 3540 remcos.exe - Suspicious behavior: MapViewOfSection 3 IoCs
pid Process 4612 remcos.exe 4612 remcos.exe 4612 remcos.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1564 powershell.exe Token: SeDebugPrivilege 2096 remcos.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4612 remcos.exe - Suspicious use of SendNotifyMessage 1 IoCs
pid Process 4612 remcos.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4612 remcos.exe - Suspicious use of WriteProcessMemory 46 IoCs
description pid Process procid_target PID 2548 wrote to memory of 4900 2548 hjc.exe 90 PID 2548 wrote to memory of 4900 2548 hjc.exe 90 PID 2548 wrote to memory of 4900 2548 hjc.exe 90 PID 4900 wrote to memory of 4076 4900 cmd.exe 92 PID 4900 wrote to memory of 4076 4900 cmd.exe 92 PID 4900 wrote to memory of 4076 4900 cmd.exe 92 PID 4900 wrote to memory of 2656 4900 cmd.exe 93 PID 4900 wrote to memory of 2656 4900 cmd.exe 93 PID 4900 wrote to memory of 2656 4900 cmd.exe 93 PID 4900 wrote to memory of 3820 4900 cmd.exe 94 PID 4900 wrote to memory of 3820 4900 cmd.exe 94 PID 4900 wrote to memory of 3820 4900 cmd.exe 94 PID 4900 wrote to memory of 1880 4900 cmd.exe 95 PID 4900 wrote to memory of 1880 4900 cmd.exe 95 PID 4900 wrote to memory of 1880 4900 cmd.exe 95 PID 4900 wrote to memory of 3836 4900 cmd.exe 96 PID 4900 wrote to memory of 3836 4900 cmd.exe 96 PID 4900 wrote to memory of 3836 4900 cmd.exe 96 PID 4900 wrote to memory of 3768 4900 cmd.exe 97 PID 4900 wrote to memory of 3768 4900 cmd.exe 97 PID 4900 wrote to memory of 3768 4900 cmd.exe 97 PID 4900 wrote to memory of 1612 4900 cmd.exe 98 PID 4900 wrote to memory of 1612 4900 cmd.exe 98 PID 1612 wrote to memory of 2076 1612 easinvoker.exe 99 PID 1612 wrote to memory of 2076 1612 easinvoker.exe 99 PID 2076 wrote to memory of 1836 2076 cmd.exe 101 PID 2076 wrote to memory of 1836 2076 cmd.exe 101 PID 2076 wrote to memory of 4136 2076 cmd.exe 102 PID 2076 wrote to memory of 4136 2076 cmd.exe 102 PID 4136 wrote to memory of 1564 4136 alpha.exe 103 PID 4136 wrote to memory of 1564 4136 alpha.exe 103 PID 2548 wrote to memory of 4440 2548 hjc.exe 108 PID 2548 wrote to memory of 4440 2548 hjc.exe 108 PID 2548 wrote to memory of 4440 2548 hjc.exe 108 PID 2548 wrote to memory of 4612 2548 hjc.exe 111 PID 2548 wrote to memory of 4612 2548 hjc.exe 111 PID 2548 wrote to memory of 4612 2548 hjc.exe 111 PID 4612 wrote to memory of 3540 4612 remcos.exe 116 PID 4612 wrote to memory of 3540 4612 remcos.exe 116 PID 4612 wrote to memory of 3540 4612 remcos.exe 116 PID 4612 wrote to memory of 3404 4612 remcos.exe 117 PID 4612 wrote to memory of 3404 4612 remcos.exe 117 PID 4612 wrote to memory of 3404 4612 remcos.exe 117 PID 4612 wrote to memory of 2096 4612 remcos.exe 118 PID 4612 wrote to memory of 2096 4612 remcos.exe 118 PID 4612 wrote to memory of 2096 4612 remcos.exe 118
Processes
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C:\Users\Admin\AppData\Local\Temp\hjc.exe"C:\Users\Admin\AppData\Local\Temp\hjc.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2548 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\CmzcxhwnO.bat" "2⤵
- Suspicious use of WriteProcessMemory
PID:4900 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" ECHO F"3⤵PID:4076
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C:\Windows\SysWOW64\xcopy.exexcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y3⤵
- Enumerates system info in registry
PID:2656
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" ECHO F"3⤵PID:3820
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C:\Windows\SysWOW64\xcopy.exexcopy "Aaa.bat" "C:\Windows \System32\" /K /D /H /Y3⤵
- Enumerates system info in registry
PID:1880
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" ECHO F"3⤵PID:3836
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C:\Windows\SysWOW64\xcopy.exexcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y3⤵
- Enumerates system info in registry
PID:3768
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C:\Windows \System32\easinvoker.exe"C:\Windows \System32\easinvoker.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1612 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\windows \system32\aaa.bat""4⤵
- Suspicious use of WriteProcessMemory
PID:2076 -
C:\Windows\System32\extrac32.exeC:\\Windows\\System32\\extrac32.exe /C /Y C:\\Windows\\System32\\cmd.exe C:\\Users\\Public\\alpha.exe5⤵PID:1836
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C:\Users\Public\alpha.exeC:\\Users\\Public\\alpha /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4136 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"6⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1564
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C:\Windows\SysWOW64\extrac32.exeC:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\hjc.exe C:\\Users\\Public\\Libraries\\Cmzcxhwn.PIF2⤵PID:4440
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C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4612 -
C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\lrmzezvuxvalxblmneh"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:3540
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C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\wtssekgoldsqzhzqwptmtx"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook accounts
PID:3404
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C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\gnxlfcrqylkdkvvunagoeknfe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2096
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3736 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:81⤵PID:1484
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\ProgramData\Remcos\remcos.exe
- Size 1.6MB
- SHA256 e1cecfcc4eed2f4b74af7d971dcf24555534db164ddb0b7cd1e821b2f0402703
- MD5 da7c2473b5c455f25f420827af596286
- SHA1 101b5f991a26fc9213c4445bd9bfdb87a6a6c5cb
- SHA512 cd6b9cd996c3bca3aa0be5d0cebebb7db1701878d5c62354d6df4c880d4af8007c95baf7f0ac9e75b099c7b3573dc23afa3a872213a9963b84c86028e6969959
- SSDEEP 24576:7MkT4gLKu9KKozJQd/HJNRO/B8M6wIJp4m+3bu8U2flxAv:QkTpT9K1mzy8M6wW4mEQ2W
- MD5 SHA1 SHA512 SSDEEP
- Path C:\ProgramData\fgdghrd\logs.dat
- Size 178B
- SHA256 0e4cc983d0e28e5b6dd1baf60565f37590e5a8b2fac044a871c8897d0ab5c0f4
- MD5 ac35cc096d34d7b373df31fcbb8f681b
- SHA1 b8a5041139e9792fa45bf16e7216d2a2f342b8a8
- SHA512 35512944121ad842063926ca2ed5fe65f7f9da130533aed356fe15142c6096011d93a24e1f4ec44980f83fc2c814c072d34ef6869cc0902df3e3fac577f48388
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2ezg5pqa.ppd.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\lrmzezvuxvalxblmneh
- Size 4KB
- SHA256 7176ca3d0196ec46f178107fdb587adaef3f6ea65daa80eccd2371a515880e04
- MD5 10fa8ec140c204486092fb161e567ec7
- SHA1 4d63e1f8df3afefedb19df73d7ee5f3b1e7b6473
- SHA512 9db4eeb3f07d8d0579f75f3426c91156809152d8c1a37c9a27bf159888f6dd97f1212ac80f5bbb17e4d86f3087c512ccba2ca50a2db07d071370bd36364e1f76
- SSDEEP 48:wvvv05xfvvc5xfdvv05xBvv05xakvv057:mvAxvYp1vAPvAbvA7
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Public\Libraries\CmzcxhwnO.bat
- Size 29KB
- SHA256 abac4a967800f5da708572ec42441ec373cd52459a83a8a382d6b8579482789d
- MD5 828ffbf60677999579dafe4bf3919c63
- SHA1 a0d159a1b9a49e9eaccc53fe0c3266c0526a1bdc
- SHA512 bf00909e24c5a6fb2346e8457a9adacd5f1b35988d90abbde9ff26896bbb59edafea60d9db4d10182a7b5e129bb69585d3e20bc5c63af3517b3a7ef1e45ffb7e
- SSDEEP 192:IBOY7cKQ/CyntVZjpubO0bXWQtagxP2+3o5WIGbfJTAy:C
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Public\Libraries\aaa.bat
- Size 3KB
- SHA256 11c20fabf677cd77e8a354b520f6ffca09cac37ce15c9932550e749e49efe08a
- MD5 71e46efe9932b83b397b44052513fb49
- SHA1 741af3b8c31095a0cc2c39c41e62279684913205
- SHA512 76da3b441c0eaaaabdd4d21b0a3d4aa7fd49d73a5f0dab2cfb39f2e114efe4f4dabe2d46b01b66d810d6e0efa97676599ece5c213c1a69a5f2f4897a9b4ac8da
- MD5 SHA1 SHA512
- Path C:\Users\Public\Libraries\easinvoker.exe
- Size 128KB
- SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
- MD5 231ce1e1d7d98b44371ffff407d68b59
- SHA1 25510d0f6353dbf0c9f72fc880de7585e34b28ff
- SHA512 520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612
- SSDEEP 3072:zar2xXibKcf5K67+k02XbFbosspwUUgcR:Nibl7+k02XZb9UA
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Public\Libraries\netutils.dll
- Size 114KB
- SHA256 a692d4305b95e57e2cfc871d53a41a5bfc9e306cb1a86ca1159db4f469598714
- MD5 566b326055c3ed8e2028aa1e2c1054d0
- SHA1 c25fa6d6369c083526cafcf45b5f554635afe218
- SHA512 da4b0b45d47757b69f9abc1817d3cb3c85deb08658e55f07b016fba053efe541a5791b9b2b380c25b440bbae6916c5a2245261553ca3c5025d9d55c943f9823c
- SSDEEP 1536:AxdWID3z1y5XtsBms9bOPu5jDqWte6VNCl7MbiRvRRJHu:AxdB/usBLOP8qWte6VQRRJHu
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Public\alpha.exe
- Size 283KB
- SHA256 b99d61d874728edc0918ca0eb10eab93d381e7367e377406e65963366c874450
- MD5 8a2122e8162dbef04694b9c3e0b6cdee
- SHA1 f1efb0fddc156e4c61c5f78a54700e4e7984d55d
- SHA512 99e784141193275d4364ba1b8762b07cc150ca3cb7e9aa1d4386ba1fa87e073d0500e61572f8d1b071f2faa2a51bb123e12d9d07054b59a1a2fd768ad9f24397
- SSDEEP 6144:k4WA1B9BxDfQWKORSqY4zOcmpdlc3gJdmtolSm:H1BhkWvSqY4zvmjOwJIT
- MD5 SHA1 SHA512 SSDEEP