Analysis
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max time kernel
142s -
max time network
182s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe -
Loads dropped DLL 2 IoCs
pid Process 1760 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 1760 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 4936 set thread context of 1760 4936 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 79 -
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 opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 2536 timeout.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4936 wrote to memory of 1760 4936 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 79 PID 4936 wrote to memory of 1760 4936 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 79 PID 4936 wrote to memory of 1760 4936 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 79 PID 4936 wrote to memory of 1760 4936 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 79 PID 4936 wrote to memory of 1760 4936 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 79 PID 4936 wrote to memory of 1760 4936 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 79 PID 4936 wrote to memory of 1760 4936 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 79 PID 4936 wrote to memory of 1760 4936 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 79 PID 4936 wrote to memory of 1760 4936 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 79 PID 1760 wrote to memory of 4880 1760 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 80 PID 1760 wrote to memory of 4880 1760 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 80 PID 1760 wrote to memory of 4880 1760 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe 80 PID 4880 wrote to memory of 2536 4880 cmd.exe 82 PID 4880 wrote to memory of 2536 4880 cmd.exe 82 PID 4880 wrote to memory of 2536 4880 cmd.exe 82
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:4936 -
C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"2⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1760 -
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⤵
- Suspicious use of WriteProcessMemory
PID:4880 -
C:\Windows\SysWOW64\timeout.exetimeout /t 54⤵
- Delays execution with timeout.exe
PID:2536
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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