Analysis
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max time kernel
109s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
22-01-2022 21:20
Static task
static1
General
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Target
a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe
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Size
270KB
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MD5
6d15c23512d891fa5b68a2f5162c5c38
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SHA1
cd29e71e1bcafc8a02bc20bd98d092761fc2dc65
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SHA256
a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02
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SHA512
9b48df476469ecad0210e5f7707ae417b43b6cc2c895f4f5702ffa17a4d48de63fec764de2c9c1df419ff711eeb0f8a6c71fc91a383ea05cd1783cab1e842fd5
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 3148 created 1884 3148 WerFault.exe a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe -
Arkei Stealer Payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/1884-131-0x00000000008C0000-0x00000000008DC000-memory.dmp family_arkei behavioral1/memory/1884-132-0x0000000000400000-0x000000000044A000-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:
a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe -
Loads dropped DLL 3 IoCs
Processes:
a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exepid process 1884 a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe 1884 a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe 1884 a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.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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Drops file in Windows directory 1 IoCs
Processes:
WerFault.exedescription ioc process File created C:\Windows\AppCompat\Programs\Amcache.hve.tmp WerFault.exe -
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 2548 1884 WerFault.exe a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe -
Checks processor information in registry 2 TTPs 5 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
WerFault.exea5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WerFault.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.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 -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1112 timeout.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
Processes:
WerFault.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WerFault.exe Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WerFault.exe -
Modifies data under HKEY_USERS 41 IoCs
Processes:
WaaSMedicAgent.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\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\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs 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\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\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
WerFault.exepid process 2548 WerFault.exe 2548 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
WerFault.exedescription pid process Token: SeRestorePrivilege 2548 WerFault.exe Token: SeBackupPrivilege 2548 WerFault.exe Token: SeBackupPrivilege 2548 WerFault.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.execmd.exeWerFault.exedescription pid process target process PID 1884 wrote to memory of 3480 1884 a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe cmd.exe PID 1884 wrote to memory of 3480 1884 a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe cmd.exe PID 1884 wrote to memory of 3480 1884 a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe cmd.exe PID 3480 wrote to memory of 1112 3480 cmd.exe timeout.exe PID 3480 wrote to memory of 1112 3480 cmd.exe timeout.exe PID 3480 wrote to memory of 1112 3480 cmd.exe timeout.exe PID 3148 wrote to memory of 1884 3148 WerFault.exe a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe PID 3148 wrote to memory of 1884 3148 WerFault.exe a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe"C:\Users\Admin\AppData\Local\Temp\a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1884 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a5347604c9f60d7262bc349a7dd63dcfd11e2a1e78be1691fc88c72fbddb6f02.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
PID:3480 -
C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:1112 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1884 -s 15522⤵
- Drops file in Windows directory
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2548
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe deb9540712ead11f31562f14e5e3f129 2URH+vHQFkGkbEY8QnWCgQ.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:2896
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1884 -ip 18841⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3148
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k wusvcs -p1⤵PID:3228
Network
MITRE ATT&CK Enterprise 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/1884-130-0x0000000000580000-0x0000000000591000-memory.dmpFilesize
68KB
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memory/1884-131-0x00000000008C0000-0x00000000008DC000-memory.dmpFilesize
112KB
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memory/1884-132-0x0000000000400000-0x000000000044A000-memory.dmpFilesize
296KB