Analysis
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max time kernel
124s -
max time network
134s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
25-01-2022 21:42
Static task
static1
General
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Target
fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exe
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Size
351KB
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MD5
26121fa0e8ab75730db5f2eae739f77e
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SHA1
2fd3991b9864f1f94435b21deee1f924dfbaf2b5
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SHA256
fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217
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SHA512
730003c8f75d19ac3001432fa0477087ad1edb09d15d29a7bfa50711a6c2f4eca9477286f2ae19f3153131917bd63ffbc6b8c0fba078345e50eaee5a08629bb7
Malware Config
Extracted
arkei
Default
http://coin-file-file-19.com/tratata.php
Signatures
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Arkei Stealer Payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/3408-116-0x00000000008A0000-0x00000000008BC000-memory.dmp family_arkei behavioral1/memory/3408-117-0x0000000000400000-0x000000000045F000-memory.dmp family_arkei -
Downloads MZ/PE file
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Loads dropped DLL 3 IoCs
Processes:
fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exepid process 3408 fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exe 3408 fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exe 3408 fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.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:
fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 648 timeout.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.execmd.exedescription pid process target process PID 3408 wrote to memory of 3236 3408 fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exe cmd.exe PID 3408 wrote to memory of 3236 3408 fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exe cmd.exe PID 3408 wrote to memory of 3236 3408 fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exe cmd.exe PID 3236 wrote to memory of 648 3236 cmd.exe timeout.exe PID 3236 wrote to memory of 648 3236 cmd.exe timeout.exe PID 3236 wrote to memory of 648 3236 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.exe"C:\Users\Admin\AppData\Local\Temp\fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.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\fff4cb9fe4660b2de1597678aab468993bbb69c6039999955bcd597632b2b217.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/3408-115-0x0000000000530000-0x0000000000541000-memory.dmpFilesize
68KB
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memory/3408-116-0x00000000008A0000-0x00000000008BC000-memory.dmpFilesize
112KB
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memory/3408-117-0x0000000000400000-0x000000000045F000-memory.dmpFilesize
380KB