Analysis
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max time kernel
117s -
max time network
129s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
17/01/2022, 10:45
Static task
static1
Behavioral task
behavioral1
Sample
c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe
Resource
win10-en-20211208
General
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Target
c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe
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Size
280KB
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MD5
32e1ba395eaa235596885ccf14cf79ab
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SHA1
839b52680d2fc8a9119327aa932c940caa8473ba
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SHA256
c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8
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SHA512
de7a94f8facc2bcf2140b730db9dd54d28d2eead6f185648e0564906887ee14e91e1ce921583b7cf89f569d83977bfb767ddd33dbabe0fcd7da99fbfc522ffeb
Malware Config
Extracted
arkei
homesteadr
http://homesteadr.link/ggate.php
Signatures
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Arkei Stealer Payload 2 IoCs
resource yara_rule behavioral1/memory/1628-116-0x0000000000720000-0x000000000073C000-memory.dmp family_arkei behavioral1/memory/1628-117-0x0000000000400000-0x00000000005D0000-memory.dmp family_arkei -
Downloads MZ/PE file
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Loads dropped DLL 3 IoCs
pid Process 1628 c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe 1628 c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe 1628 c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.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 c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 4408 timeout.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1628 wrote to memory of 4364 1628 c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe 69 PID 1628 wrote to memory of 4364 1628 c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe 69 PID 1628 wrote to memory of 4364 1628 c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe 69 PID 4364 wrote to memory of 4408 4364 cmd.exe 71 PID 4364 wrote to memory of 4408 4364 cmd.exe 71 PID 4364 wrote to memory of 4408 4364 cmd.exe 71
Processes
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C:\Users\Admin\AppData\Local\Temp\c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe"C:\Users\Admin\AppData\Local\Temp\c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1628 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
PID:4364 -
C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:4408
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