Analysis
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max time kernel
120s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
19/04/2022, 07:34
Static task
static1
Behavioral task
behavioral1
Sample
a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
Resource
win7-20220414-en
General
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Target
a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
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Size
271KB
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MD5
807ed826f4e5564dea3731f6e9a99da5
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SHA1
6af26593b27ce7e5c8140ac437801893f9c4cdd6
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SHA256
a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58
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SHA512
46216db616ec8067cb1a375e6df281402f19a3c4cfcc4821143fbbbf0d2a94b8333dccd6ddccc12a0ddfdf5ab762baf2467b47cd67e0b0f67d531fc8bac982e7
Malware Config
Extracted
arkei
Default
http://jsdkci.link/588711.php
Signatures
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Deletes itself 1 IoCs
pid Process 524 cmd.exe -
Loads dropped DLL 2 IoCs
pid Process 556 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 556 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.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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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 388 set thread context of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 -
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.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 1804 timeout.exe -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 388 wrote to memory of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 PID 388 wrote to memory of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 PID 388 wrote to memory of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 PID 388 wrote to memory of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 PID 388 wrote to memory of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 PID 388 wrote to memory of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 PID 388 wrote to memory of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 PID 388 wrote to memory of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 PID 388 wrote to memory of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 PID 388 wrote to memory of 556 388 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 28 PID 556 wrote to memory of 524 556 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 31 PID 556 wrote to memory of 524 556 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 31 PID 556 wrote to memory of 524 556 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 31 PID 556 wrote to memory of 524 556 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 31 PID 524 wrote to memory of 1804 524 cmd.exe 33 PID 524 wrote to memory of 1804 524 cmd.exe 33 PID 524 wrote to memory of 1804 524 cmd.exe 33 PID 524 wrote to memory of 1804 524 cmd.exe 33
Processes
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C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:388 -
C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:556 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe" & exit3⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:524 -
C:\Windows\SysWOW64\timeout.exetimeout /t 54⤵
- Delays execution with timeout.exe
PID:1804
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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Filesize
1.2MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66