Analysis
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max time kernel
110s -
max time network
132s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
25-01-2022 16:19
Static task
static1
General
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Target
a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe
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Size
297KB
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MD5
1c9cebfc7dae1d1b75538ba7f496bbfb
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SHA1
7ff87bbcc5c04386800985bf55b4373993e3f3d5
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SHA256
a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b
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SHA512
1cd66e84f60a1b7bd7c205c17b2d608e20a91d260729de2ce0bcbbbc531aa948d9dc4f24ff2ad17ce76a2f99defe5ee1325dcf2e2844f47fb60658e0bee34aba
Malware Config
Extracted
arkei
Default
http://coin-file-file-19.com/tratata.php
Signatures
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suricata: ET MALWARE Win32/Vidar Variant Stealer CnC Exfil
suricata: ET MALWARE Win32/Vidar Variant Stealer CnC Exfil
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Arkei Stealer Payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/2760-117-0x0000000000400000-0x0000000000452000-memory.dmp family_arkei -
Downloads MZ/PE file
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Loads dropped DLL 3 IoCs
Processes:
a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exepid process 2760 a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe 2760 a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe 2760 a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.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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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 668 timeout.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.execmd.exedescription pid process target process PID 2760 wrote to memory of 1932 2760 a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe cmd.exe PID 2760 wrote to memory of 1932 2760 a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe cmd.exe PID 2760 wrote to memory of 1932 2760 a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe cmd.exe PID 1932 wrote to memory of 668 1932 cmd.exe timeout.exe PID 1932 wrote to memory of 668 1932 cmd.exe timeout.exe PID 1932 wrote to memory of 668 1932 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe"C:\Users\Admin\AppData\Local\Temp\a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe"1⤵
- 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\a84f132af3fe5d0c962f5f8d11704872d7171bd75d425dde3d182f01e249fe3b.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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\ProgramData\mozglue.dllMD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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\ProgramData\nss3.dllMD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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\ProgramData\sqlite3.dllMD5
e477a96c8f2b18d6b5c27bde49c990bf
SHA1e980c9bf41330d1e5bd04556db4646a0210f7409
SHA25616574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c
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memory/2760-115-0x00000000004B0000-0x000000000055E000-memory.dmpFilesize
696KB
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memory/2760-116-0x00000000004B0000-0x000000000055E000-memory.dmpFilesize
696KB
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memory/2760-117-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB