Analysis
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max time kernel
177s -
max time network
200s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
24-01-2022 01:16
Static task
static1
General
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Target
8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe
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Size
284KB
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MD5
859dd564770fd5d85f5ae3a337339f94
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SHA1
31ffb57ec8c76bb54e072746f9fcd2635d430a3f
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SHA256
8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b
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SHA512
f5d4d59c75cf536287a06af0a626ea17284b8d1a990405ccc0f00f5ecbebae9b28d1c9a1f3835c35048388fb54da91db89304335b948f28808535ae0c501c03e
Malware Config
Extracted
arkei
Default
http://homesteadr.link/ggate.php
Signatures
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Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
Processes:
WerFault.exedescription pid process target process PID 224 created 2436 224 WerFault.exe 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe -
Arkei Stealer Payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/2436-131-0x00000000006C0000-0x00000000006DC000-memory.dmp family_arkei behavioral1/memory/2436-132-0x0000000000400000-0x000000000044F000-memory.dmp family_arkei -
Downloads MZ/PE file
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Sets service image path in registry 2 TTPs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe -
Loads dropped DLL 3 IoCs
Processes:
8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exepid process 2436 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe 2436 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe 2436 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe -
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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1556 2436 WerFault.exe 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe -
Checks processor information in registry 2 TTPs 5 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exeWerFault.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WerFault.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4048 timeout.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
Processes:
WerFault.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WerFault.exe -
Modifies data under HKEY_USERS 41 IoCs
Processes:
WaaSMedicAgent.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
WerFault.exepid process 1556 WerFault.exe 1556 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
WerFault.exedescription pid process Token: SeRestorePrivilege 1556 WerFault.exe Token: SeBackupPrivilege 1556 WerFault.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.execmd.exeWerFault.exedescription pid process target process PID 2436 wrote to memory of 2912 2436 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe cmd.exe PID 2436 wrote to memory of 2912 2436 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe cmd.exe PID 2436 wrote to memory of 2912 2436 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe cmd.exe PID 2912 wrote to memory of 4048 2912 cmd.exe timeout.exe PID 2912 wrote to memory of 4048 2912 cmd.exe timeout.exe PID 2912 wrote to memory of 4048 2912 cmd.exe timeout.exe PID 224 wrote to memory of 2436 224 WerFault.exe 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe PID 224 wrote to memory of 2436 224 WerFault.exe 8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe"C:\Users\Admin\AppData\Local\Temp\8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\8ec118f1e1f0b80207b38ce9c47868a13e136e07fca2a39fcd7944ebb5b6d90b.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2436 -s 15682⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe 488063e06a9cfc79c80a365c25dfadf0 u3pCchQsYkujnCz7FYwSeA.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2436 -ip 24361⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\ProgramData\mozglue.dllMD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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C:\ProgramData\nss3.dllMD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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C:\ProgramData\sqlite3.dllMD5
e477a96c8f2b18d6b5c27bde49c990bf
SHA1e980c9bf41330d1e5bd04556db4646a0210f7409
SHA25616574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c
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memory/2436-130-0x0000000000540000-0x0000000000551000-memory.dmpFilesize
68KB
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memory/2436-131-0x00000000006C0000-0x00000000006DC000-memory.dmpFilesize
112KB
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memory/2436-132-0x0000000000400000-0x000000000044F000-memory.dmpFilesize
316KB