Analysis
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max time kernel
119s -
max time network
120s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
16/10/2024, 01:27
Static task
static1
Behavioral task
behavioral1
Sample
eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe
Resource
win10v2004-20241007-en
General
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Target
eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe
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Size
368KB
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MD5
8abe17eb6af4673e7f67edc5f44ff5f0
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SHA1
ade3ad178d66f2216e69703bd09196c91de8b21f
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SHA256
eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9
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SHA512
43423c1e15cca744a5baba44332f201b832bda36e06f0598aa3e57c06ff0d34e7d21cd09e03f4683d1c6d983f8efb0697558ed664ecebde405cbd5cd3b49c19a
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SSDEEP
6144:5JgmYA/nVA9JATAoQSHBjQP/sC94mrJx2XtjXmK6cAQJNElb6dPURN5Fpg:3gmYA/n0eDBjQPphdxmj2LcAEmlb+UpE
Malware Config
Signatures
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Deletes itself 1 IoCs
pid Process 4044 gpauuvyr.exe -
Executes dropped EXE 2 IoCs
pid Process 4044 gpauuvyr.exe 1964 yae.exe -
Loads dropped DLL 1 IoCs
pid Process 1964 yae.exe -
Reads user/profile data of web browsers 3 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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ProMark = "c:\\Program Files\\aprlf\\yae.exe \"c:\\Program Files\\aprlf\\yaela.dll\",Clean" yae.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) \??\z: yae.exe File opened (read-only) \??\a: yae.exe File opened (read-only) \??\h: yae.exe File opened (read-only) \??\p: yae.exe File opened (read-only) \??\r: yae.exe File opened (read-only) \??\x: yae.exe File opened (read-only) \??\q: yae.exe File opened (read-only) \??\u: yae.exe File opened (read-only) \??\y: yae.exe File opened (read-only) \??\b: yae.exe File opened (read-only) \??\e: yae.exe File opened (read-only) \??\j: yae.exe File opened (read-only) \??\l: yae.exe File opened (read-only) \??\n: yae.exe File opened (read-only) \??\v: yae.exe File opened (read-only) \??\g: yae.exe File opened (read-only) \??\k: yae.exe File opened (read-only) \??\m: yae.exe File opened (read-only) \??\o: yae.exe File opened (read-only) \??\s: yae.exe File opened (read-only) \??\i: yae.exe File opened (read-only) \??\t: yae.exe File opened (read-only) \??\w: yae.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 yae.exe -
Drops file in Program Files directory 4 IoCs
description ioc Process File opened for modification \??\c:\Program Files\aprlf gpauuvyr.exe File created \??\c:\Program Files\aprlf\yaela.dll gpauuvyr.exe File created \??\c:\Program Files\aprlf\yae.exe gpauuvyr.exe File opened for modification \??\c:\Program Files\aprlf\yae.exe gpauuvyr.exe -
System Location Discovery: System Language Discovery 1 TTPs 5 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 eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language gpauuvyr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language yae.exe -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 2492 cmd.exe 552 PING.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 yae.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString yae.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 552 PING.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1964 yae.exe 1964 yae.exe 1964 yae.exe 1964 yae.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1964 yae.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3228 eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe 4044 gpauuvyr.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3228 wrote to memory of 2492 3228 eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe 84 PID 3228 wrote to memory of 2492 3228 eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe 84 PID 3228 wrote to memory of 2492 3228 eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe 84 PID 2492 wrote to memory of 552 2492 cmd.exe 87 PID 2492 wrote to memory of 552 2492 cmd.exe 87 PID 2492 wrote to memory of 552 2492 cmd.exe 87 PID 2492 wrote to memory of 4044 2492 cmd.exe 90 PID 2492 wrote to memory of 4044 2492 cmd.exe 90 PID 2492 wrote to memory of 4044 2492 cmd.exe 90 PID 4044 wrote to memory of 1964 4044 gpauuvyr.exe 91 PID 4044 wrote to memory of 1964 4044 gpauuvyr.exe 91 PID 4044 wrote to memory of 1964 4044 gpauuvyr.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe"C:\Users\Admin\AppData\Local\Temp\eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3228 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\gpauuvyr.exe "C:\Users\Admin\AppData\Local\Temp\eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:2492 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:552
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C:\Users\Admin\AppData\Local\Temp\gpauuvyr.exeC:\Users\Admin\AppData\Local\Temp\\gpauuvyr.exe "C:\Users\Admin\AppData\Local\Temp\eb37275890d7c01f25670234b9b5a84ee4c1bc9aa5a0808fbed48d3675327ae9N.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4044 -
\??\c:\Program Files\aprlf\yae.exe"c:\Program Files\aprlf\yae.exe" "c:\Program Files\aprlf\yaela.dll",Clean C:\Users\Admin\AppData\Local\Temp\gpauuvyr.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1964
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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
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
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Downloads
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Filesize
60KB
MD5889b99c52a60dd49227c5e485a016679
SHA18fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA2566cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
SHA51208933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
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Filesize
369KB
MD58b82d510738e567cdff7db601f6a335b
SHA10ef1dc1b856165cafbd60302c0a43dfd9d4db11e
SHA2562f08a3702938f719709a6c9134ca76fdfc149f81342f50785b451f2c9fec6c16
SHA5123fb278e08f7e10ed244013373c474eb04fce97a08b9f75e17ea3e6e1970ef022a21ca3080e213dcb461b0b1b6e789eb44610e8d371b81b839526bacc6be7db9c
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Filesize
160KB
MD52bca6848cee9b8966b98ba3b9e00c7cb
SHA11cada0af76ed6af88d7486368cc30d8090e29df8
SHA25658f231fa74ddaf4c6c2f2b5d46ae5b03d01ed7b519c0601b3b2a1defa9bf9381
SHA512ac614f9df95dfa1122624d3d67dc2abccacdc8c36397c57a8f7f29bf29bde9e26a69344fb04509fd1a604bdd3d352d507512c9d512fce1f8127776b5e783ac5b