Analysis
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max time kernel
123s -
max time network
142s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
15/01/2022, 11:25
Static task
static1
General
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Target
f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe
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Size
316KB
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MD5
f311b9f8b7b18430f985d40b156dfd07
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SHA1
5ebeddb6a903f9d51f840858827ebc1f21fee122
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SHA256
f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004
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SHA512
bb721a5aa14ac3e4c5d3b7fd16d40c1d795bf8b2ca103c47a1b95c6f6accb460b12a5580f54370e6af3ff03e2ba1ad2837c64b0ca5aad720d67e55899fff705f
Malware Config
Extracted
arkei
Default
http://file-file-host4.com/tratata.php
Signatures
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Arkei Stealer Payload 2 IoCs
resource yara_rule behavioral1/memory/3716-116-0x0000000000640000-0x000000000065C000-memory.dmp family_arkei behavioral1/memory/3716-117-0x0000000000400000-0x000000000055F000-memory.dmp family_arkei -
Downloads MZ/PE file
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Loads dropped DLL 3 IoCs
pid Process 3716 f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe 3716 f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe 3716 f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.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.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 3784 timeout.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3716 wrote to memory of 3568 3716 f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe 69 PID 3716 wrote to memory of 3568 3716 f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe 69 PID 3716 wrote to memory of 3568 3716 f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe 69 PID 3568 wrote to memory of 3784 3568 cmd.exe 71 PID 3568 wrote to memory of 3784 3568 cmd.exe 71 PID 3568 wrote to memory of 3784 3568 cmd.exe 71
Processes
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C:\Users\Admin\AppData\Local\Temp\f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe"C:\Users\Admin\AppData\Local\Temp\f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:3716 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\f323e2e20fc2f1d9d5afe645acfb33670f4fc8be2d472dfc5d1151b723321004.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
PID:3568 -
C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:3784
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