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Analysis
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max time kernel
93s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
submitted
25/08/2022, 13:25
Static task
static1
Behavioral task
behavioral1
Sample
Builded.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
Builded.exe
Resource
win10v2004-20220812-en
General
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Target
Builded.exe
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Size
159KB
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MD5
00d5cd42c25e75858eb8078585022140
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SHA1
51ceb557b9d65f9d7e7c0aa9f31a6a9bb584b8f4
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SHA256
cdbbca5bc9428b5e403f4af071affbfe74b90c1b3244908bb0470d214f080205
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SHA512
e88ef22f6cf527d99e65abe2c24625eddb49e8a25b90648319e0d9ac17e8f0dec79a7d5050b7ccec21ffe14a71181dc7449b217c25ca3c028a8e5485419be55e
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SSDEEP
3072:UjTFcBgI8VBs+Zv3mniJNjK0HvtCDKuNt+5JSp8Bb8EG:gFQ1K+K2ni/JHVye8EG
Malware Config
Extracted
marsstealer
Default
mars.housewall.xyz/gate.php
Signatures
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Mars Stealer
An infostealer written in C++ based on other infostealers.
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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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation Builded.exe -
Loads dropped DLL 2 IoCs
pid Process 1652 Builded.exe 1652 Builded.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 Builded.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString Builded.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 1904 timeout.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1652 wrote to memory of 3680 1652 Builded.exe 95 PID 1652 wrote to memory of 3680 1652 Builded.exe 95 PID 1652 wrote to memory of 3680 1652 Builded.exe 95 PID 3680 wrote to memory of 1904 3680 cmd.exe 97 PID 3680 wrote to memory of 1904 3680 cmd.exe 97 PID 3680 wrote to memory of 1904 3680 cmd.exe 97
Processes
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C:\Users\Admin\AppData\Local\Temp\Builded.exe"C:\Users\Admin\AppData\Local\Temp\Builded.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1652 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\Builded.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
PID:3680 -
C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:1904
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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