Analysis
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max time kernel
151s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
07/05/2024, 07:19
Static task
static1
Behavioral task
behavioral1
Sample
14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe
Resource
win10v2004-20240226-en
General
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Target
14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe
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Size
404KB
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MD5
0bd29ecec69f403fa146df188c4406ed
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SHA1
7482ed095cc4ad13e43bdef78aa3690cb8b9a762
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SHA256
14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e
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SHA512
e930c020b45d04f3fd18afc9fe39ec860ed611fdb547a33c47e4034c2b0599b50715727999cee710008b6502a69af0eb46d1eae468c1a69761da1a510b482173
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SSDEEP
6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse
Malware Config
Signatures
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Blocklisted process makes network request 8 IoCs
flow pid Process 18 628 rundll32.exe 43 628 rundll32.exe 44 628 rundll32.exe 45 628 rundll32.exe 46 628 rundll32.exe 49 628 rundll32.exe 54 628 rundll32.exe 56 628 rundll32.exe -
Deletes itself 1 IoCs
pid Process 4512 dwrboxr.exe -
Executes dropped EXE 1 IoCs
pid Process 4512 dwrboxr.exe -
Loads dropped DLL 1 IoCs
pid Process 628 rundll32.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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\rlqew\\czfsd.dll\",Verify" rundll32.exe -
Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\b: rundll32.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PHYSICALDRIVE0 rundll32.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 628 rundll32.exe -
Drops file in Program Files directory 2 IoCs
description ioc Process File opened for modification \??\c:\Program Files\rlqew dwrboxr.exe File created \??\c:\Program Files\rlqew\czfsd.dll dwrboxr.exe -
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 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 2576 PING.EXE -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe 628 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 628 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3488 14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe 4512 dwrboxr.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3488 wrote to memory of 3920 3488 14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe 91 PID 3488 wrote to memory of 3920 3488 14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe 91 PID 3488 wrote to memory of 3920 3488 14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe 91 PID 3920 wrote to memory of 2576 3920 cmd.exe 93 PID 3920 wrote to memory of 2576 3920 cmd.exe 93 PID 3920 wrote to memory of 2576 3920 cmd.exe 93 PID 3920 wrote to memory of 4512 3920 cmd.exe 94 PID 3920 wrote to memory of 4512 3920 cmd.exe 94 PID 3920 wrote to memory of 4512 3920 cmd.exe 94 PID 4512 wrote to memory of 628 4512 dwrboxr.exe 95 PID 4512 wrote to memory of 628 4512 dwrboxr.exe 95 PID 4512 wrote to memory of 628 4512 dwrboxr.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe"C:\Users\Admin\AppData\Local\Temp\14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3488 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dwrboxr.exe "C:\Users\Admin\AppData\Local\Temp\14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:3920 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- Runs ping.exe
PID:2576
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C:\Users\Admin\AppData\Local\Temp\dwrboxr.exeC:\Users\Admin\AppData\Local\Temp\\dwrboxr.exe "C:\Users\Admin\AppData\Local\Temp\14cfaf877c7698d5fc87d844f66d2b917709070f5feb4e33e10b11017c02fb1e.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4512 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\rlqew\czfsd.dll",Verify C:\Users\Admin\AppData\Local\Temp\dwrboxr.exe4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:628
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3600 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:81⤵PID:3208
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
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Filesize
228KB
MD578d9024ac625d9014dc8ba65b79b5ebb
SHA1c358c3d66b746270ed88fc66445a2628bbb44cd4
SHA256dce52299b2465a9af59a080dd9e0f4a80e3c380c90a656721ab9bfe4088d09c0
SHA5122091ae28f5287a46c9cedf541005900b54d9157e9658b1c6759d4fa7a8b571c2f5a1fc4a9db20fec4aaba22ba2ee3d84ce05c50b1650cf5d171b8b82ec0f9909
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Filesize
405KB
MD53ea4040786c4ae706e4683104a2c9456
SHA11428088c5ca0bc8b88c784c8813fd1258e7e91d6
SHA256e238a0f04476c37f52057bad6e4f2fa4f05e0e39d685db6e3d0f25eda13be7ff
SHA512583e44f33294fcf349424a064c01dffaf06f0dddf40adef19b83f3b7f8b64f85b181163bd089ac7b5ae5aad22309c7805599c7e47ea9fcc7a8e4bd9daf4df98a