Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
19/06/2026, 12:16
Static task
static1
Behavioral task
behavioral1
Sample
Tax-Number919863.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
Tax-Number919863.exe
Resource
win11ltsc2024-20260617-en
Behavioral task
behavioral3
Sample
jli.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
jli.dll
Resource
win11ltsc2024-20260618-en
General
- Target Tax-Number919863.exe
- Size 24KB
- Sample260619-pfty7sg19v
- SHA256 233086e7d57e16523ac3463df306cfc497a9ba3c3e8268f62c8625ef56b2380e
- MD5 3c305f878c678e9017e3e53fb6020283
- SHA1 b8f157d19017065ccad21e5ceae21184d0fc3e5d
- SHA512 7783d325bf738dbbc2a35545e2aa31d672dbab7e255720d83a9da66ce885eb0a60853211e95748f8bd3bcd3c470f2a9e8d10bb767b02f8a14511cec6e748e7ec
- SSDEEP 384:8qRg0yFtNq5Awt9F7heZBLy8RbmL4nNyGu0:eFnq5xtgBL5AL10
- TLSH T1B8B27C67CE500CCBFE1A8AB0A0E59227FC32B6999ED1D3C35378C1550F513817A9A2E9
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
-
valleyrat_s2
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1.0
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yk.ggdy.com:8003
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yk.ggdy.com:80
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103.97.131.186:8888
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103.97.131.186:6666
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103.97.128.141:7777
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campaign_date
2023. 6.30
Signatures
- Family: ValleyRat
ValleyRat stage2 is a backdoor written in C++.
- Detects ValleyRAT payload 16 IoCs
resource yara_rule behavioral1/memory/2288-46-0x0000000003020000-0x0000000003059000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/4480-50-0x00000000037B0000-0x00000000037E9000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/2288-51-0x0000000003020000-0x0000000003059000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/2280-55-0x0000000002D70000-0x0000000002DA9000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/4480-56-0x00000000037B0000-0x00000000037E9000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/2280-57-0x0000000002D70000-0x0000000002DA9000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/4764-63-0x0000000004200000-0x0000000004239000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/4764-68-0x0000000004200000-0x0000000004239000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/2288-72-0x0000000003020000-0x0000000003059000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/2288-71-0x0000000003020000-0x0000000003059000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/4480-73-0x00000000037B0000-0x00000000037E9000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/4480-74-0x00000000037B0000-0x00000000037E9000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/2280-75-0x0000000002D70000-0x0000000002DA9000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/2280-76-0x0000000002D70000-0x0000000002DA9000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/4764-77-0x0000000004200000-0x0000000004239000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/4764-78-0x0000000004200000-0x0000000004239000-memory.dmp family_valleyrat_stage_2_v2 - Drops file in Drivers directory 3 IoCs
description ioc Process File created C:\Windows\System32\drivers\pcdhost.sys Tax-Number919863.exe File opened for modification C:\Windows\System32\drivers\pcdhost.sys Tax-Number919863.exe File opened for modification C:\Windows\System32\drivers\pcdhost.sys Tax-Number919863.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\USB3YTHS = "cmd /c start \"\" /D \"C:\\ProgramData\\USB3YTHS\" Tax-Number919863.exe" Tax-Number919863.exe - Enumerates connected drives 3 TTPs 64 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\V: ngen.exe File opened (read-only) \??\H: ngen.exe File opened (read-only) \??\P: ngen.exe File opened (read-only) \??\M: ngen.exe File opened (read-only) \??\W: ngen.exe File opened (read-only) \??\I: ngen.exe File opened (read-only) \??\R: ngen.exe File opened (read-only) \??\P: ngen.exe File opened (read-only) \??\R: ngen.exe File opened (read-only) \??\B: ngen.exe File opened (read-only) \??\Q: ngen.exe File opened (read-only) \??\J: ngen.exe File opened (read-only) \??\P: ngen.exe File opened (read-only) \??\X: ngen.exe File opened (read-only) \??\Q: ngen.exe File opened (read-only) \??\T: ngen.exe File opened (read-only) \??\N: ngen.exe File opened (read-only) \??\X: ngen.exe File opened (read-only) \??\G: ngen.exe File opened (read-only) \??\H: ngen.exe File opened (read-only) \??\K: ngen.exe File opened (read-only) \??\S: ngen.exe File opened (read-only) \??\J: ngen.exe File opened (read-only) \??\Y: ngen.exe File opened (read-only) \??\S: ngen.exe File opened (read-only) \??\Z: ngen.exe File opened (read-only) \??\I: ngen.exe File opened (read-only) \??\B: ngen.exe File opened (read-only) \??\H: ngen.exe File opened (read-only) \??\N: ngen.exe File opened (read-only) \??\I: ngen.exe File opened (read-only) \??\V: ngen.exe File opened (read-only) \??\Z: ngen.exe File opened (read-only) \??\Q: ngen.exe File opened (read-only) \??\Z: ngen.exe File opened (read-only) \??\B: ngen.exe File opened (read-only) \??\O: ngen.exe File opened (read-only) \??\L: ngen.exe File opened (read-only) \??\N: ngen.exe File opened (read-only) \??\P: ngen.exe File opened (read-only) \??\X: ngen.exe File opened (read-only) \??\G: ngen.exe File opened (read-only) \??\K: ngen.exe File opened (read-only) \??\R: ngen.exe File opened (read-only) \??\Y: ngen.exe File opened (read-only) \??\E: ngen.exe File opened (read-only) \??\R: ngen.exe File opened (read-only) \??\W: ngen.exe File opened (read-only) \??\E: ngen.exe File opened (read-only) \??\T: ngen.exe File opened (read-only) \??\O: ngen.exe File opened (read-only) \??\Q: ngen.exe File opened (read-only) \??\T: ngen.exe File opened (read-only) \??\L: ngen.exe File opened (read-only) \??\T: ngen.exe File opened (read-only) \??\V: ngen.exe File opened (read-only) \??\Z: ngen.exe File opened (read-only) \??\G: ngen.exe File opened (read-only) \??\W: ngen.exe File opened (read-only) \??\L: ngen.exe File opened (read-only) \??\S: ngen.exe File opened (read-only) \??\H: ngen.exe File opened (read-only) \??\V: ngen.exe File opened (read-only) \??\E: ngen.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-668679576-120646659-2289335452-1000\Control Panel\International\Geo\Nation cmd.exe - Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 3284 set thread context of 2288 3284 Tax-Number919863.exe 92 PID 3284 set thread context of 4480 3284 Tax-Number919863.exe 100 PID 736 set thread context of 2280 736 Tax-Number919863.exe 101 PID 736 set thread context of 4764 736 Tax-Number919863.exe 103 - Executes dropped EXE 2 IoCs
pid Process 1828 pcdhost.sys 736 Tax-Number919863.exe - Loads dropped DLL 1 IoCs
pid Process 736 Tax-Number919863.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 4 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 ngen.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ngen.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ngen.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ngen.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe 2288 ngen.exe - Suspicious behavior: LoadsDriver 4 IoCs
pid Process 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found - Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 2288 ngen.exe 4480 ngen.exe 2280 ngen.exe 4764 ngen.exe - Suspicious use of WriteProcessMemory 29 IoCs
description pid Process procid_target PID 3284 wrote to memory of 2288 3284 Tax-Number919863.exe 92 PID 3284 wrote to memory of 2288 3284 Tax-Number919863.exe 92 PID 3284 wrote to memory of 2288 3284 Tax-Number919863.exe 92 PID 3284 wrote to memory of 2288 3284 Tax-Number919863.exe 92 PID 3284 wrote to memory of 2288 3284 Tax-Number919863.exe 92 PID 3284 wrote to memory of 2288 3284 Tax-Number919863.exe 92 PID 3284 wrote to memory of 2288 3284 Tax-Number919863.exe 92 PID 4300 wrote to memory of 736 4300 cmd.exe 97 PID 3284 wrote to memory of 4480 3284 Tax-Number919863.exe 100 PID 3284 wrote to memory of 4480 3284 Tax-Number919863.exe 100 PID 3284 wrote to memory of 4480 3284 Tax-Number919863.exe 100 PID 3284 wrote to memory of 4480 3284 Tax-Number919863.exe 100 PID 3284 wrote to memory of 4480 3284 Tax-Number919863.exe 100 PID 3284 wrote to memory of 4480 3284 Tax-Number919863.exe 100 PID 3284 wrote to memory of 4480 3284 Tax-Number919863.exe 100 PID 736 wrote to memory of 2280 736 Tax-Number919863.exe 101 PID 736 wrote to memory of 2280 736 Tax-Number919863.exe 101 PID 736 wrote to memory of 2280 736 Tax-Number919863.exe 101 PID 736 wrote to memory of 2280 736 Tax-Number919863.exe 101 PID 736 wrote to memory of 2280 736 Tax-Number919863.exe 101 PID 736 wrote to memory of 2280 736 Tax-Number919863.exe 101 PID 736 wrote to memory of 2280 736 Tax-Number919863.exe 101 PID 736 wrote to memory of 4764 736 Tax-Number919863.exe 103 PID 736 wrote to memory of 4764 736 Tax-Number919863.exe 103 PID 736 wrote to memory of 4764 736 Tax-Number919863.exe 103 PID 736 wrote to memory of 4764 736 Tax-Number919863.exe 103 PID 736 wrote to memory of 4764 736 Tax-Number919863.exe 103 PID 736 wrote to memory of 4764 736 Tax-Number919863.exe 103 PID 736 wrote to memory of 4764 736 Tax-Number919863.exe 103
Processes
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C:\Users\Admin\AppData\Local\Temp\Tax-Number919863.exe"C:\Users\Admin\AppData\Local\Temp\Tax-Number919863.exe"1⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3284 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"2⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:2288
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"2⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:4480
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C:\Windows\System32\drivers\pcdhost.sysC:\Windows\System32\drivers\pcdhost.sys1⤵
- Executes dropped EXE
PID:1828
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C:\Windows\system32\cmd.exe"cmd /c start "" /D "C:\ProgramData\USB3YTHS" Tax-Number919863.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4300 -
C:\ProgramData\USB3YTHS\Tax-Number919863.exe"C:\ProgramData\USB3YTHS\Tax-Number919863.exe"2⤵
- Drops file in Drivers directory
- Suspicious use of SetThreadContext
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:736 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"3⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2280
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"3⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:4764
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\ProgramData\USB3YTHS\Tax-Number919863.exe
- Size 24KB
- SHA256 233086e7d57e16523ac3463df306cfc497a9ba3c3e8268f62c8625ef56b2380e
- MD5 3c305f878c678e9017e3e53fb6020283
- SHA1 b8f157d19017065ccad21e5ceae21184d0fc3e5d
- SHA512 7783d325bf738dbbc2a35545e2aa31d672dbab7e255720d83a9da66ce885eb0a60853211e95748f8bd3bcd3c470f2a9e8d10bb767b02f8a14511cec6e748e7ec
- SSDEEP 384:8qRg0yFtNq5Awt9F7heZBLy8RbmL4nNyGu0:eFnq5xtgBL5AL10
- TLSH T1B8B27C67CE500CCBFE1A8AB0A0E59227FC32B6999ED1D3C35378C1550F513817A9A2E9
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\ProgramData\quickScreenShot\20260619\20260619131922.jpg
- Size 106KB
- SHA256 ff602482f1a5dfa768f5e61550b3b7bfcaea4287ebfee299f0abcf2dcb429bed
- MD5 b04794db5b708f7de9ce8118b79fd3b5
- SHA1 6e4a1c12e14d5ab746d78d62d4bd6e2733bfced7
- SHA512 657b0c729073f1679bcb0e56c7b4860facf942f467a2bda39d9b91b201fbfb0190859feb074db02dcf70974f52f3e91d5981e9fa6a3d07377b047260d4893709
- SSDEEP 1536:IWhwaTQ8K5MWiwtOOM0NWgClqyeuYlT7n12e0qlYg2Db5TlLFP1ZL/a:UL5MKM4iqy6pJ0DgKbrZP1RC
- TLSH T100B3445FFBD8F84B002B937798BE574A6B17B362963B66D4D08F8D85122B1811937CE0
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\ProgramData\quickScreenShot\20260619\20260619132024.jpg
- Size 106KB
- SHA256 8abc634f1b70fc005808cbd2636182c9fac23e0fb09631deca16eac18476a9cf
- MD5 4a2ad5e7c1477e8bd9cbf7e818b530b6
- SHA1 1559a9824e112f76022e5dde83646b92a020826d
- SHA512 1597b7db11f30174cfacbbd0205986ca39245e3e09e9b0ba6023a813122f8dffb6757a130603fb9642a8e0de66e9d52652241c218f971aceaf88965e141a406f
- SSDEEP 1536:IWhwaTQ8K5MWiwtOOM0NWgClqyeuYlT7n12e0qlYg2Db5TlLFP1ZL/9:UL5MKM4iqy6pJ0DgKbrZP1RV
- TLSH T1EDB3545FFBD4F84B002B537798BE574A6B17B362963B66D4D04F8D85122B2812937CE0
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Windows\System32\drivers\pcdhost.sys
- Size 17KB
- SHA256 07c5209bf83065fe760f4fee4ed2308b0c523671f68ca73a3854c2c8c28c0541
- MD5 826c6d2e3d80f2d43f7977f998525ad3
- SHA1 7340eae2ccf3d57ac3ae271c9983996d8ae7fde0
- SHA512 162954793c2e734fbbbef058b31d91de4df13c019af7c1f33135f0cd98113d0c88ea423faaabf435fd96b7bb002c51b6b4fc6ac1748eab131badb51866b59767
- SSDEEP 192:JgvuYacCCpQIw9l0HKs0zTQxmnYe+PjP4wBjtlAv6YHmVm1OoG:JsuoCCpQIY0HKs0vkmnYPL4OUSYGVm1k
- TLSH T1BF826D8B476920AAFAE7C935C2A18677FC30FAD077564AFF4119C1911E81FE05B3D209
- MD5 SHA1 SHA512 SSDEEP TLSH