Analysis
- user interaction
yes - max time kernel
13s - max time network
9s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260617-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
27/06/2026, 22:24
Behavioral task
behavioral1
Sample
Lunar_Builder.exe
Resource
win10v2004-20260513-en
5 signatures
150 seconds
General
- Target Lunar_Builder.exe
- Size 7.7MB
- Sample260627-2bdsmsd13r
- SHA256 9ad27fa8bb7d8258fb1e572c94d107181ba2314a4db4d3222c3e0dc407493b45
- MD5 c67a1736d52b895cac3146b6e7d43f81
- SHA1 b7b0151626c098ef2ac887732e90b76790200b5f
- SHA512 d729a150a04f103e066f94bbc60ea99f5d51716862c88c19e6c7b65bd347bdafb8c0df12b829c929481ea3d0282f309bfe590ee7d0e011c94610b52df4bc3273
- SSDEEP 196608:Z1BPNXt4lrVh8aNN33XkQ5FRf/H3NyAqsJUeDtS7m:Z1BPNXt4lrVjnnXkQHRnXNyARJUz7m
- TLSH T1F98633786F98C305F3966B74E4F66582376AAB797A0ECAC1D0052FB93A12E015FC3117
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Loads dropped DLL 2 IoCs
pid Process 4296 Lunar_Builder.exe 4296 Lunar_Builder.exe - Costura .NET executable packer 1 IoCs
Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.
resource yara_rule behavioral2/memory/4296-6-0x0000000006050000-0x0000000006432000-memory.dmp costura - Program crash 1 IoCs
pid pid_target Process procid_target 4748 4296 WerFault.exe 88 - System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Lunar_Builder.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4296 Lunar_Builder.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Lunar_Builder.exe"C:\Users\Admin\AppData\Local\Temp\Lunar_Builder.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4296 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4296 -s 15922⤵
- Program crash
PID:4748
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4296 -ip 42961⤵PID:6116
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\16ec68cf-d28f-4048-90c5-4286b379e033\SiticoneDotNetRT.dll
- Size 136KB
- SHA256 77dc05a6bda90757f66552ee3f469b09f1e00732b4edca0f542872fb591ed9db
- MD5 9af5eb006bb0bab7f226272d82c896c7
- SHA1 c2a5bb42a5f08f4dc821be374b700652262308f0
- SHA512 7badd41be4c1039302fda9bba19d374ec9446ce24b7db33b66bee4ef38180d1abcd666d2aea468e7e452aa1e1565eedfefed582bf1c2fe477a4171d99d48772a
- SSDEEP 3072:nIuwb3gn+bp4G6qepZn07UHGm2pM1g23mGpzqQ4AZ2Z34E:nIb3gn+bp45DGP923mGpzjcZz
- TLSH T167D33A31D202C27FE1E340FA92FF4A6EA4589B35431B90C7B4C8199AB7921D6F932757
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\21130707-67bd-4fd2-91d2-b9f759127e7b\GunaUIDotNetRT.dll
- Size 94KB
- SHA256 fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b
- MD5 14ff402962ad21b78ae0b4c43cd1f194
- SHA1 f8a510eb26666e875a5bdd1cadad40602763ad72
- SHA512 daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b
- SSDEEP 1536:JKQ7ZLTFq31bfnHSukoY1IPtan1sBrGxEm5g:JKc/FM1bfnyNNdkrGxJg
- TLSH T1E593A530E206C13FE5D255BF96FE46AEA0296B31532B50C371DC099ABBD01E2FA31617
- MD5 SHA1 SHA512 SSDEEP TLSH