Analysis
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max time kernel
117s -
max time network
122s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
17/01/2022, 10:04
Static task
static1
General
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Target
15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe
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Size
280KB
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MD5
44c86fdc1da2a5e7d2d34ceed689a07d
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SHA1
57c3e0cac8c0ea2ebd380b1c1636b0dd5b03687e
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SHA256
15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9
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SHA512
3b3587603e0ac03b8cd3ace390624d17c61f55cf48ac17e526f6f72b42a9b1eea7f6ab766fc1dd6b9a15342eda20cb2e95fd5492caf40b9b718a3f2629b917ce
Malware Config
Extracted
arkei
Default
http://file-file-host4.com/tratata.php
Signatures
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Arkei Stealer Payload 1 IoCs
resource yara_rule behavioral1/memory/528-118-0x0000000000400000-0x00000000005D0000-memory.dmp family_arkei -
Downloads MZ/PE file
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Loads dropped DLL 3 IoCs
pid Process 528 15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe 528 15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe 528 15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.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 15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 3392 timeout.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 528 wrote to memory of 816 528 15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe 69 PID 528 wrote to memory of 816 528 15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe 69 PID 528 wrote to memory of 816 528 15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe 69 PID 816 wrote to memory of 3392 816 cmd.exe 71 PID 816 wrote to memory of 3392 816 cmd.exe 71 PID 816 wrote to memory of 3392 816 cmd.exe 71
Processes
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C:\Users\Admin\AppData\Local\Temp\15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe"C:\Users\Admin\AppData\Local\Temp\15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:528 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\15ba5bae9ec4325f142543ee5c62e68e12e45a46228dcd3fbd1ec046a3a078b9.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
PID:816 -
C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:3392
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