Analysis
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max time kernel
160s -
max time network
164s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
18-04-2024 09:32
Static task
static1
Behavioral task
behavioral1
Sample
ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe
Resource
win10v2004-20240412-en
General
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Target
ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe
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Size
1.8MB
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MD5
412c5e658b2c6220de841b56d99f7070
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SHA1
7703ebf4a6f8b055b7c8c1c9dca62d76cac12939
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SHA256
ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c
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SHA512
0ab8d5ebe4594b2e523af290e48579f3f49f685af6b41c54abb6002fd4af44d705b088b154dd656c31f7039bf872604b4f79a75403ed7b8659bd7f9c912a1065
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SSDEEP
24576:uJ280G7S9gGBwO5JE6qZAxxBp1lJLEoUe+BejVDZAVA0jaFd6t/qRoxt1+iqWsz:u080Gv2nJloED3/+KVDCVnwd6t7h3
Malware Config
Extracted
amadey
4.17
http://193.233.132.167
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install_dir
4d0ab15804
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install_file
chrosha.exe
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strings_key
1a9519d7b465e1f4880fa09a6162d768
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url_paths
/enigma/index.php
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ chrosha.exe -
Blocklisted process makes network request 2 IoCs
flow pid Process 40 3832 rundll32.exe 44 3140 rundll32.exe -
Downloads MZ/PE file
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Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion chrosha.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion chrosha.exe -
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-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation chrosha.exe -
Executes dropped EXE 1 IoCs
pid Process 4148 chrosha.exe -
Identifies Wine through registry keys 2 TTPs 2 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Wine ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe Key opened \REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Wine chrosha.exe -
Loads dropped DLL 3 IoCs
pid Process 2684 rundll32.exe 3832 rundll32.exe 3140 rundll32.exe -
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 1592 ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe 4148 chrosha.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\Tasks\chrosha.job ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 17 IoCs
pid Process 1592 ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe 1592 ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe 4148 chrosha.exe 4148 chrosha.exe 3832 rundll32.exe 3832 rundll32.exe 3832 rundll32.exe 3832 rundll32.exe 3832 rundll32.exe 3832 rundll32.exe 3832 rundll32.exe 3832 rundll32.exe 3832 rundll32.exe 3832 rundll32.exe 3104 powershell.exe 3104 powershell.exe 3104 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3104 powershell.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1592 ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4148 wrote to memory of 2684 4148 chrosha.exe 100 PID 4148 wrote to memory of 2684 4148 chrosha.exe 100 PID 4148 wrote to memory of 2684 4148 chrosha.exe 100 PID 2684 wrote to memory of 3832 2684 rundll32.exe 101 PID 2684 wrote to memory of 3832 2684 rundll32.exe 101 PID 3832 wrote to memory of 1128 3832 rundll32.exe 102 PID 3832 wrote to memory of 1128 3832 rundll32.exe 102 PID 3832 wrote to memory of 3104 3832 rundll32.exe 104 PID 3832 wrote to memory of 3104 3832 rundll32.exe 104 PID 4148 wrote to memory of 3140 4148 chrosha.exe 107 PID 4148 wrote to memory of 3140 4148 chrosha.exe 107 PID 4148 wrote to memory of 3140 4148 chrosha.exe 107
Processes
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C:\Users\Admin\AppData\Local\Temp\ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe"C:\Users\Admin\AppData\Local\Temp\ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
PID:1592
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C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exeC:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4148 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\cred64.dll, Main2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2684 -
C:\Windows\system32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\cred64.dll, Main3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3832 -
C:\Windows\system32\netsh.exenetsh wlan show profiles4⤵PID:1128
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\230272463368_Desktop.zip' -CompressionLevel Optimal4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3104
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\clip64.dll, Main2⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:3140
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.8MB
MD5412c5e658b2c6220de841b56d99f7070
SHA17703ebf4a6f8b055b7c8c1c9dca62d76cac12939
SHA256ac2ca48033d469f2755c5b4a3ad95d2300b72db8bd7cea159b2ecb7320ffdf1c
SHA5120ab8d5ebe4594b2e523af290e48579f3f49f685af6b41c54abb6002fd4af44d705b088b154dd656c31f7039bf872604b4f79a75403ed7b8659bd7f9c912a1065
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
109KB
MD5154c3f1334dd435f562672f2664fea6b
SHA151dd25e2ba98b8546de163b8f26e2972a90c2c79
SHA2565f431129f97f3d56929f1e5584819e091bd6c854d7e18503074737fc6d79e33f
SHA5121bca69bbcdb7ecd418769e9d4befc458f9f8e3cee81feb7316bb61e189e2904f4431e4cc7d291e179a5dec441b959d428d8e433f579036f763bbad6460222841
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Filesize
1.2MB
MD5f35b671fda2603ec30ace10946f11a90
SHA1059ad6b06559d4db581b1879e709f32f80850872
SHA25683e3df5bec15d5333935bea8b719a6d677e2fb3dc1cf9e18e7b82fd0438285c7
SHA512b5fa27d08c64727cef7fdda5e68054a4359cd697df50d70d1d90da583195959a139066a6214531bbc5f20cd4f9bc1ca3e4244396547381291a6a1d2df9cf8705