Analysis
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max time kernel
143s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
21-04-2024 03:55
Static task
static1
Behavioral task
behavioral1
Sample
8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.exe
Resource
win11-20240412-en
General
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Target
8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.exe
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Size
1.8MB
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MD5
2ea422cc22f3fe41b343a82ab6d350ea
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SHA1
70d6ee93e0c410844dbc2800f777d2f1351a9630
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SHA256
8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1
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SHA512
1861dbb1277d9d7dab9b5f1dd71f706407771ff0009b7b0546d9cb63aa1af0b3e0e93df7d235e70e60c5e3faf20312dfafd3a7846d27cec08990c8504f764b3f
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SSDEEP
49152:UKQvqR+/5P25fwyn9k4O0suqTFw5izCRT:UKQy4ywy9/OXuqTFw5fT
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__ 8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ chrosha.exe -
Blocklisted process makes network request 2 IoCs
flow pid Process 68 2828 rundll32.exe 76 1056 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 8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation chrosha.exe -
Executes dropped EXE 1 IoCs
pid Process 3672 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-1-5-21-4084619521-2220719027-1909462854-1000\Software\Wine 8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.exe Key opened \REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Software\Wine chrosha.exe -
Loads dropped DLL 3 IoCs
pid Process 4068 rundll32.exe 2828 rundll32.exe 1056 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 2092 8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.exe 3672 chrosha.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\Tasks\chrosha.job 8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.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 2092 8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.exe 2092 8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.exe 3672 chrosha.exe 3672 chrosha.exe 2828 rundll32.exe 2828 rundll32.exe 2828 rundll32.exe 2828 rundll32.exe 2828 rundll32.exe 2828 rundll32.exe 2828 rundll32.exe 2828 rundll32.exe 2828 rundll32.exe 2828 rundll32.exe 632 powershell.exe 632 powershell.exe 632 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 632 powershell.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3672 wrote to memory of 4068 3672 chrosha.exe 103 PID 3672 wrote to memory of 4068 3672 chrosha.exe 103 PID 3672 wrote to memory of 4068 3672 chrosha.exe 103 PID 4068 wrote to memory of 2828 4068 rundll32.exe 104 PID 4068 wrote to memory of 2828 4068 rundll32.exe 104 PID 2828 wrote to memory of 4780 2828 rundll32.exe 105 PID 2828 wrote to memory of 4780 2828 rundll32.exe 105 PID 2828 wrote to memory of 632 2828 rundll32.exe 107 PID 2828 wrote to memory of 632 2828 rundll32.exe 107 PID 3672 wrote to memory of 1056 3672 chrosha.exe 113 PID 3672 wrote to memory of 1056 3672 chrosha.exe 113 PID 3672 wrote to memory of 1056 3672 chrosha.exe 113
Processes
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C:\Users\Admin\AppData\Local\Temp\8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.exe"C:\Users\Admin\AppData\Local\Temp\8842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1.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
PID:2092
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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:3672 -
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:4068 -
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:2828 -
C:\Windows\system32\netsh.exenetsh wlan show profiles4⤵PID:4780
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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\084619521222_Desktop.zip' -CompressionLevel Optimal4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:632
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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:1056
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.8MB
MD52ea422cc22f3fe41b343a82ab6d350ea
SHA170d6ee93e0c410844dbc2800f777d2f1351a9630
SHA2568842e3fa614a4eead7769e88e6ae2e32fa1d47c0be6e12c3104cf3800dc8e1b1
SHA5121861dbb1277d9d7dab9b5f1dd71f706407771ff0009b7b0546d9cb63aa1af0b3e0e93df7d235e70e60c5e3faf20312dfafd3a7846d27cec08990c8504f764b3f
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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