Analysis
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max time kernel
150s -
max time network
143s -
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, 02:56
Behavioral task
behavioral1
Sample
a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.exe
Resource
win7-20240903-en
General
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Target
a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.exe
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Size
410KB
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MD5
ba5509128a0f29bf2229b8c723f3fc33
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SHA1
83244918a513d00bd3e4dc505685c6c9acd2fa2a
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SHA256
a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669
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SHA512
b4a8d4cc2be5444917361d5ed763b9e5cece84fd2d82a3cc6f15dbf422449138186af7db4866c54b40fa5698ec1d89a537a56432e6454b64dab57bcf51225306
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SSDEEP
6144:2jMPGGAn37FQXSzjBi9awI2WXyZPbwdpL:HPGk6jnCCdp
Malware Config
Signatures
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Blocklisted process makes network request 4 IoCs
flow pid Process 21 672 rundll32.exe 42 672 rundll32.exe 43 672 rundll32.exe 55 672 rundll32.exe -
resource yara_rule behavioral2/files/0x0008000000023c5a-8.dat aspack_v212_v242 -
Deletes itself 1 IoCs
pid Process 4836 ukoya.exe -
Executes dropped EXE 1 IoCs
pid Process 4836 ukoya.exe -
Loads dropped DLL 1 IoCs
pid Process 672 rundll32.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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resource yara_rule behavioral2/files/0x0008000000023c5a-8.dat vmprotect behavioral2/memory/672-10-0x0000000010000000-0x0000000010037000-memory.dmp vmprotect behavioral2/memory/672-12-0x0000000010000000-0x0000000010037000-memory.dmp vmprotect behavioral2/memory/672-11-0x0000000010000000-0x0000000010037000-memory.dmp vmprotect behavioral2/memory/672-13-0x0000000010000000-0x0000000010037000-memory.dmp vmprotect behavioral2/memory/672-16-0x0000000010000000-0x0000000010037000-memory.dmp vmprotect behavioral2/memory/672-17-0x0000000010000000-0x0000000010037000-memory.dmp vmprotect behavioral2/memory/672-18-0x0000000010000000-0x0000000010037000-memory.dmp vmprotect -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\yxbbtk\\dthox.tod\",Exit" 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) \??\b: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\s: 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) \??\j: 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) \??\t: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\p: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\y: 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 -
resource yara_rule behavioral2/memory/4660-0-0x0000000000400000-0x0000000000466000-memory.dmp upx behavioral2/memory/4660-2-0x0000000000400000-0x0000000000466000-memory.dmp upx behavioral2/files/0x000c000000023b5f-3.dat upx behavioral2/memory/4836-7-0x0000000000400000-0x0000000000466000-memory.dmp upx -
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 a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.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 ukoya.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 4260 PING.EXE 4408 cmd.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 4260 PING.EXE -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe 672 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 672 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4660 a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.exe 4836 ukoya.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4660 wrote to memory of 4408 4660 a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.exe 86 PID 4660 wrote to memory of 4408 4660 a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.exe 86 PID 4660 wrote to memory of 4408 4660 a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.exe 86 PID 4408 wrote to memory of 4260 4408 cmd.exe 88 PID 4408 wrote to memory of 4260 4408 cmd.exe 88 PID 4408 wrote to memory of 4260 4408 cmd.exe 88 PID 4408 wrote to memory of 4836 4408 cmd.exe 90 PID 4408 wrote to memory of 4836 4408 cmd.exe 90 PID 4408 wrote to memory of 4836 4408 cmd.exe 90 PID 4836 wrote to memory of 672 4836 ukoya.exe 91 PID 4836 wrote to memory of 672 4836 ukoya.exe 91 PID 4836 wrote to memory of 672 4836 ukoya.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.exe"C:\Users\Admin\AppData\Local\Temp\a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4660 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ukoya.exe "C:\Users\Admin\AppData\Local\Temp\a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4408 -
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:4260
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C:\Users\Admin\AppData\Local\Temp\ukoya.exeC:\Users\Admin\AppData\Local\Temp\\ukoya.exe "C:\Users\Admin\AppData\Local\Temp\a9e225acd55a36761bb040f76bde125e9b3d91d6b84426e9a54f34567df80669.exe"3⤵
- Deletes itself
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4836 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\yxbbtk\dthox.tod",Exit C:\Users\Admin\AppData\Local\Temp\ukoya.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)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:672
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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
Loading Replay Monitor...
Downloads
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Filesize
410KB
MD52bef44584ff29840ae7b1e511ea7c424
SHA13234f8d7508ebb22c2a857f54a45de6a20961e40
SHA256695a539fea5e45e7671afdce36a7567d73bb0271f322c51b64ca1675bf76a1b7
SHA5127edfc088e964ea8909ca17fb12e831fb41dadc246896c8bff475301cd8144f5839cfba8231fbe92e6ff1b8cc8acf0150f7187373657ebd24ca4b7ee46b682c81
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Filesize
128KB
MD564597ebd5759f1c96d9c89ba91e6b9ae
SHA122b5c32c02e7d98384b5d364d4e88805a988e58a
SHA2568fe1d9492012107c64090e2bbed51ca84f46f0828bd95b18326f776e694e3bcb
SHA51288cf508773b316acafafc5882dd6a50f895a4f444cfa0ef25781c0c5bbd8eba69e38b777460e66ee2cb25e6c61b699b0120788e00b2a0018bc02d07d644d076f