Analysis
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max time kernel
111s -
max time network
130s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
17/01/2022, 10:00
Static task
static1
Behavioral task
behavioral1
Sample
85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe
Resource
win10-en-20211208
General
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Target
85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe
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Size
280KB
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MD5
3443c50a3f82c68489c42f416079135d
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SHA1
c55d29de699a66ffc4df52dbb917e3ac40759523
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SHA256
85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227
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SHA512
b03eb8159c2edf8f17c14e32e48de2673a4a1cd4fc27345af16bbb161ddd4bc1a2bc2a5a392819dc50644e0ccfc47d16372d3d2ccec36860d6569b75c6398ca8
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/1992-116-0x00000000022F0000-0x000000000230C000-memory.dmp family_arkei behavioral1/memory/1992-117-0x0000000000400000-0x00000000005D0000-memory.dmp family_arkei -
Downloads MZ/PE file
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Loads dropped DLL 3 IoCs
pid Process 1992 85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe 1992 85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe 1992 85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.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 85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 832 timeout.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1992 wrote to memory of 2536 1992 85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe 69 PID 1992 wrote to memory of 2536 1992 85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe 69 PID 1992 wrote to memory of 2536 1992 85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe 69 PID 2536 wrote to memory of 832 2536 cmd.exe 71 PID 2536 wrote to memory of 832 2536 cmd.exe 71 PID 2536 wrote to memory of 832 2536 cmd.exe 71
Processes
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C:\Users\Admin\AppData\Local\Temp\85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe"C:\Users\Admin\AppData\Local\Temp\85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1992 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
PID:2536 -
C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:832
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