Analysis
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max time kernel
149s -
max time network
135s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
07/05/2024, 03:20
Static task
static1
Behavioral task
behavioral1
Sample
d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe
Resource
win10v2004-20240419-en
General
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Target
d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe
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Size
405KB
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MD5
4070d58fc98be5e72f8b0386d19a5e57
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SHA1
10cbae7e59cb4ea5f2d35d98af6cff2a0cfafc3f
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SHA256
d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13
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SHA512
6d3627bf5f1415713e25384ec12ab01e84878ca44ad8c369e50a48a696ca9a84096be6e433a6180503a14821535625385154ca5201762253b958cccf3b7d2f87
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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 25 1508 rundll32.exe 32 1508 rundll32.exe 33 1508 rundll32.exe 34 1508 rundll32.exe 48 1508 rundll32.exe 49 1508 rundll32.exe 61 1508 rundll32.exe 77 1508 rundll32.exe -
Deletes itself 1 IoCs
pid Process 3100 ujbdqcpe.exe -
Executes dropped EXE 1 IoCs
pid Process 3100 ujbdqcpe.exe -
Loads dropped DLL 1 IoCs
pid Process 1508 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-1-5-21-2860750803-256193626-1801997576-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\xxckkkzsv\\ucrkwkp.dll\",Verify" rundll32.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) \??\g: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\z: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\p: 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 1508 rundll32.exe -
Drops file in Program Files directory 2 IoCs
description ioc Process File opened for modification \??\c:\Program Files\xxckkkzsv ujbdqcpe.exe File created \??\c:\Program Files\xxckkkzsv\ucrkwkp.dll ujbdqcpe.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 2964 PING.EXE -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe 1508 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1508 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 864 d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe 3100 ujbdqcpe.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 864 wrote to memory of 4532 864 d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe 84 PID 864 wrote to memory of 4532 864 d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe 84 PID 864 wrote to memory of 4532 864 d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe 84 PID 4532 wrote to memory of 2964 4532 cmd.exe 87 PID 4532 wrote to memory of 2964 4532 cmd.exe 87 PID 4532 wrote to memory of 2964 4532 cmd.exe 87 PID 4532 wrote to memory of 3100 4532 cmd.exe 90 PID 4532 wrote to memory of 3100 4532 cmd.exe 90 PID 4532 wrote to memory of 3100 4532 cmd.exe 90 PID 3100 wrote to memory of 1508 3100 ujbdqcpe.exe 91 PID 3100 wrote to memory of 1508 3100 ujbdqcpe.exe 91 PID 3100 wrote to memory of 1508 3100 ujbdqcpe.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe"C:\Users\Admin\AppData\Local\Temp\d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:864 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ujbdqcpe.exe "C:\Users\Admin\AppData\Local\Temp\d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:4532 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- Runs ping.exe
PID:2964
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C:\Users\Admin\AppData\Local\Temp\ujbdqcpe.exeC:\Users\Admin\AppData\Local\Temp\\ujbdqcpe.exe "C:\Users\Admin\AppData\Local\Temp\d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3100 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\xxckkkzsv\ucrkwkp.dll",Verify C:\Users\Admin\AppData\Local\Temp\ujbdqcpe.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:1508
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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
406KB
MD537b64b76581dfa211cf4d297b7ad3a82
SHA1b73a775455d8c0458e6d5ad95e0946a48258b10a
SHA256be238e10cacb029604ee5f99353bb9c5055e536f34212059cf849ada99089eb4
SHA5126520722f6ebe277f2abb6bc4613f8aa2a84fed5848ee4a5b05ff275ecc0a371dcf19d70516a4410cfc0ca8b2ba1c77e94a05974809782ff4adc0491f70296f10
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Filesize
228KB
MD57b2d95b3f8172cd89322ac790aa99a5a
SHA1bdf3d03fca3ec32143ea60f95750f9cae6fd0098
SHA256c4e02be238ece1de16b89f3eeb862d8f9cc29a237bd7443c43397ea63bf42286
SHA5124b5976998232efb5d95de6f6b1abaaca8e6f4c67c3b4297e4f167b9e8c0eba2c5ed98b1496fe3fb7ea59ab22e3c8eb4d20daba3dc0e8559a7c021b98de2ff864