Analysis
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max time kernel
20s -
max time network
19s -
platform
windows11-21h2_x64 -
resource
win11-20241007-en -
resource tags
arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system -
submitted
23-12-2024 00:16
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
Rubluk/Bloxstrap-v2.8.1.exe
Resource
win11-20241007-en
windows11-21h2-x64
1 signatures
900 seconds
Behavioral task
behavioral2
Sample
Rubluk/Bootstrapper.exe
Resource
win11-20241007-en
windows11-21h2-x64
10 signatures
900 seconds
General
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Target
Rubluk/Bootstrapper.exe
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Size
800KB
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MD5
02c70d9d6696950c198db93b7f6a835e
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SHA1
30231a467a49cc37768eea0f55f4bea1cbfb48e2
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SHA256
8f2e28588f2303bd8d7a9b0c3ff6a9cb16fa93f8ddc9c5e0666a8c12d6880ee3
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SHA512
431d9b9918553bff4f4a5bc2a5e7b7015f8ad0e2d390bb4d5264d08983372424156524ef5587b24b67d1226856fc630aaca08edc8113097e0094501b4f08efeb
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SSDEEP
12288:qhd8cjaLXVh84wEFkW1mocaBj6WtiRPpptHxQ0z:2ycjar84w5W4ocaBj6y2tHDz
Score
7/10
Malware Config
Signatures
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Loads dropped DLL 5 IoCs
pid Process 1180 MsiExec.exe 1180 MsiExec.exe 564 MsiExec.exe 564 MsiExec.exe 564 MsiExec.exe -
Blocklisted process makes network request 3 IoCs
flow pid Process 10 3500 msiexec.exe 11 3500 msiexec.exe 12 3500 msiexec.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\V: msiexec.exe -
Drops file in Windows directory 14 IoCs
description ioc Process File opened for modification C:\Windows\Installer\ msiexec.exe File created C:\Windows\Installer\inprogressinstallinfo.ipi msiexec.exe File opened for modification C:\Windows\Installer\MSIB99C.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSIB9AD.tmp msiexec.exe File created C:\Windows\Installer\e57b3bf.msi msiexec.exe File opened for modification C:\Windows\Installer\e57b3bf.msi msiexec.exe File opened for modification C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log msiexec.exe File opened for modification C:\Windows\Installer\MSIB95D.tmp msiexec.exe File created C:\Windows\Installer\SourceHash{EFA235B5-C6A1-42E6-9BC9-02A8D56F1CDC} msiexec.exe File opened for modification C:\Windows\Installer\MSIC298.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSIC2C8.tmp msiexec.exe File created C:\Windows\SystemTemp\~DF93183004ED619C8D.TMP msiexec.exe File created C:\Windows\SystemTemp\~DF7ABAEC832C422B50.TMP msiexec.exe File opened for modification C:\Windows\Installer\MSIC130.tmp msiexec.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 MsiExec.exe -
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
pid Process 1892 ipconfig.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4008 Bootstrapper.exe 4008 Bootstrapper.exe 3500 msiexec.exe 3500 msiexec.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4548 WMIC.exe Token: SeSecurityPrivilege 4548 WMIC.exe Token: SeTakeOwnershipPrivilege 4548 WMIC.exe Token: SeLoadDriverPrivilege 4548 WMIC.exe Token: SeSystemProfilePrivilege 4548 WMIC.exe Token: SeSystemtimePrivilege 4548 WMIC.exe Token: SeProfSingleProcessPrivilege 4548 WMIC.exe Token: SeIncBasePriorityPrivilege 4548 WMIC.exe Token: SeCreatePagefilePrivilege 4548 WMIC.exe Token: SeBackupPrivilege 4548 WMIC.exe Token: SeRestorePrivilege 4548 WMIC.exe Token: SeShutdownPrivilege 4548 WMIC.exe Token: SeDebugPrivilege 4548 WMIC.exe Token: SeSystemEnvironmentPrivilege 4548 WMIC.exe Token: SeRemoteShutdownPrivilege 4548 WMIC.exe Token: SeUndockPrivilege 4548 WMIC.exe Token: SeManageVolumePrivilege 4548 WMIC.exe Token: 33 4548 WMIC.exe Token: 34 4548 WMIC.exe Token: 35 4548 WMIC.exe Token: 36 4548 WMIC.exe Token: SeIncreaseQuotaPrivilege 4548 WMIC.exe Token: SeSecurityPrivilege 4548 WMIC.exe Token: SeTakeOwnershipPrivilege 4548 WMIC.exe Token: SeLoadDriverPrivilege 4548 WMIC.exe Token: SeSystemProfilePrivilege 4548 WMIC.exe Token: SeSystemtimePrivilege 4548 WMIC.exe Token: SeProfSingleProcessPrivilege 4548 WMIC.exe Token: SeIncBasePriorityPrivilege 4548 WMIC.exe Token: SeCreatePagefilePrivilege 4548 WMIC.exe Token: SeBackupPrivilege 4548 WMIC.exe Token: SeRestorePrivilege 4548 WMIC.exe Token: SeShutdownPrivilege 4548 WMIC.exe Token: SeDebugPrivilege 4548 WMIC.exe Token: SeSystemEnvironmentPrivilege 4548 WMIC.exe Token: SeRemoteShutdownPrivilege 4548 WMIC.exe Token: SeUndockPrivilege 4548 WMIC.exe Token: SeManageVolumePrivilege 4548 WMIC.exe Token: 33 4548 WMIC.exe Token: 34 4548 WMIC.exe Token: 35 4548 WMIC.exe Token: 36 4548 WMIC.exe Token: SeDebugPrivilege 4008 Bootstrapper.exe Token: SeShutdownPrivilege 3168 msiexec.exe Token: SeIncreaseQuotaPrivilege 3168 msiexec.exe Token: SeSecurityPrivilege 3500 msiexec.exe Token: SeCreateTokenPrivilege 3168 msiexec.exe Token: SeAssignPrimaryTokenPrivilege 3168 msiexec.exe Token: SeLockMemoryPrivilege 3168 msiexec.exe Token: SeIncreaseQuotaPrivilege 3168 msiexec.exe Token: SeMachineAccountPrivilege 3168 msiexec.exe Token: SeTcbPrivilege 3168 msiexec.exe Token: SeSecurityPrivilege 3168 msiexec.exe Token: SeTakeOwnershipPrivilege 3168 msiexec.exe Token: SeLoadDriverPrivilege 3168 msiexec.exe Token: SeSystemProfilePrivilege 3168 msiexec.exe Token: SeSystemtimePrivilege 3168 msiexec.exe Token: SeProfSingleProcessPrivilege 3168 msiexec.exe Token: SeIncBasePriorityPrivilege 3168 msiexec.exe Token: SeCreatePagefilePrivilege 3168 msiexec.exe Token: SeCreatePermanentPrivilege 3168 msiexec.exe Token: SeBackupPrivilege 3168 msiexec.exe Token: SeRestorePrivilege 3168 msiexec.exe Token: SeShutdownPrivilege 3168 msiexec.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4008 wrote to memory of 1224 4008 Bootstrapper.exe 78 PID 4008 wrote to memory of 1224 4008 Bootstrapper.exe 78 PID 1224 wrote to memory of 1892 1224 cmd.exe 80 PID 1224 wrote to memory of 1892 1224 cmd.exe 80 PID 4008 wrote to memory of 4612 4008 Bootstrapper.exe 81 PID 4008 wrote to memory of 4612 4008 Bootstrapper.exe 81 PID 4612 wrote to memory of 4548 4612 cmd.exe 83 PID 4612 wrote to memory of 4548 4612 cmd.exe 83 PID 4008 wrote to memory of 3168 4008 Bootstrapper.exe 85 PID 4008 wrote to memory of 3168 4008 Bootstrapper.exe 85 PID 3500 wrote to memory of 1180 3500 msiexec.exe 89 PID 3500 wrote to memory of 1180 3500 msiexec.exe 89 PID 3500 wrote to memory of 564 3500 msiexec.exe 90 PID 3500 wrote to memory of 564 3500 msiexec.exe 90 PID 3500 wrote to memory of 564 3500 msiexec.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\Rubluk\Bootstrapper.exe"C:\Users\Admin\AppData\Local\Temp\Rubluk\Bootstrapper.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4008 -
C:\Windows\SYSTEM32\cmd.exe"cmd" /c ipconfig /all2⤵
- Suspicious use of WriteProcessMemory
PID:1224 -
C:\Windows\system32\ipconfig.exeipconfig /all3⤵
- Gathers network information
PID:1892
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c wmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")2⤵
- Suspicious use of WriteProcessMemory
PID:4612 -
C:\Windows\System32\Wbem\WMIC.exewmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")3⤵
- Suspicious use of AdjustPrivilegeToken
PID:4548
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C:\Windows\System32\msiexec.exe"C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\node-v18.16.0-x64.msi" /qn2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3168
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Blocklisted process makes network request
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3500 -
C:\Windows\System32\MsiExec.exeC:\Windows\System32\MsiExec.exe -Embedding 9711C300B644938372E6CB21D649AB5D2⤵
- Loads dropped DLL
PID:1180
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C:\Windows\syswow64\MsiExec.exeC:\Windows\syswow64\MsiExec.exe -Embedding 0DFC7E75A664148B63FBC19B45B2E87F2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:564
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
30.1MB
MD50e4e9aa41d24221b29b19ba96c1a64d0
SHA1231ade3d5a586c0eb4441c8dbfe9007dc26b2872
SHA2565bfb6f3ab89e198539408f7e0e8ec0b0bd5efe8898573ec05b381228efb45a5d
SHA512e6f27aecead72dffecbeaad46ebdf4b1fd3dbcddd1f6076ba183b654e4e32d30f7af1236bf2e04459186e993356fe2041840671be73612c8afed985c2c608913
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Filesize
122KB
MD59fe9b0ecaea0324ad99036a91db03ebb
SHA1144068c64ec06fc08eadfcca0a014a44b95bb908
SHA256e2cce64916e405976a1d0c522b44527d12b1cba19de25da62121cf5f41d184c9
SHA512906641a73d69a841218ae90b83714a05af3537eec8ad1d761f58ac365cf005bdd74ad88f71c4437aaa126ac74fa46bcad424d17c746ab197eec2caa1bd838176
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Filesize
211KB
MD5a3ae5d86ecf38db9427359ea37a5f646
SHA1eb4cb5ff520717038adadcc5e1ef8f7c24b27a90
SHA256c8d190d5be1efd2d52f72a72ae9dfa3940ab3faceb626405959349654fe18b74
SHA51296ecb3bc00848eeb2836e289ef7b7b2607d30790ffd1ae0e0acfc2e14f26a991c6e728b8dc67280426e478c70231f9e13f514e52c8ce7d956c1fad0e322d98e0
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Filesize
297KB
MD57a86ce1a899262dd3c1df656bff3fb2c
SHA133dcbe66c0dc0a16bab852ed0a6ef71c2d9e0541
SHA256b8f2d0909d7c2934285a8be010d37c0609c7854a36562cbfcbce547f4f4c7b0c
SHA512421e8195c47381de4b3125ab6719eec9be7acd2c97ce9247f4b70a309d32377917c9686b245864e914448fe53df2694d5ee5f327838d029989ba7acafda302ec