Analysis
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max time kernel
134s -
max time network
136s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
18-01-2022 20:01
Static task
static1
Behavioral task
behavioral1
Sample
e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe
Resource
win10v2004-en-20220112
General
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Target
e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe
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Size
302KB
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MD5
73a10bd3483912f9a16eb073f1ac6f22
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SHA1
14a800c428dbb276e587502db41ac6912e276437
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SHA256
e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23
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SHA512
10c63c46dfe59b128e6f1cedc47b77c0a818cbcb32b9bace858e5e759c602601e6827b5a005657d1b084edca8b1167fbbe850314b8b8f9f8b78ea7f371996782
Malware Config
Extracted
arkei
homesteadr
http://homesteadr.link/ggate.php
Signatures
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Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
Processes:
WerFault.exedescription pid process target process PID 216 created 2216 216 WerFault.exe e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe -
Arkei Stealer Payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/2216-131-0x0000000000460000-0x000000000047C000-memory.dmp family_arkei behavioral1/memory/2216-132-0x0000000000400000-0x0000000000453000-memory.dmp family_arkei -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe -
Loads dropped DLL 3 IoCs
Processes:
e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exepid process 2216 e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe 2216 e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe 2216 e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.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 1272 2216 WerFault.exe e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe -
Checks processor information in registry 2 TTPs 5 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
WerFault.exee81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.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 e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.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 320 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 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
WerFault.exepid process 1272 WerFault.exe 1272 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
WerFault.exedescription pid process Token: SeRestorePrivilege 1272 WerFault.exe Token: SeBackupPrivilege 1272 WerFault.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.execmd.exeWerFault.exedescription pid process target process PID 2216 wrote to memory of 2928 2216 e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe cmd.exe PID 2216 wrote to memory of 2928 2216 e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe cmd.exe PID 2216 wrote to memory of 2928 2216 e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe cmd.exe PID 2928 wrote to memory of 320 2928 cmd.exe timeout.exe PID 2928 wrote to memory of 320 2928 cmd.exe timeout.exe PID 2928 wrote to memory of 320 2928 cmd.exe timeout.exe PID 216 wrote to memory of 2216 216 WerFault.exe e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe PID 216 wrote to memory of 2216 216 WerFault.exe e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.exe"C:\Users\Admin\AppData\Local\Temp\e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.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\e81120aba59575d9b542a38e59f2cdaf7391d2e8769f9bb179c3bb0459697f23.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 2216 -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\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2216 -ip 22161⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
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/2216-130-0x00000000001E0000-0x00000000001F1000-memory.dmpFilesize
68KB
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memory/2216-131-0x0000000000460000-0x000000000047C000-memory.dmpFilesize
112KB
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memory/2216-132-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB