Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
12/10/2026, 22:34
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
6d085a5d903e28a79ea368e2909db2c72f50dc32f6f1d183d6dfc6590b5cfe74.dll
Resource
win10v2004-20260911-en
windows10-2004-x64
18 signatures
150 seconds
Behavioral task
behavioral2
Sample
6d085a5d903e28a79ea368e2909db2c72f50dc32f6f1d183d6dfc6590b5cfe74.dll
Resource
win11ltsc2024-20260911-en
windows11-ltsc_2024-x64
18 signatures
150 seconds
General
- Target 6d085a5d903e28a79ea368e2909db2c72f50dc32f6f1d183d6dfc6590b5cfe74.dll
- Size 5.4MB
- Sample261012-2g6eva11ev
- SHA256 6d085a5d903e28a79ea368e2909db2c72f50dc32f6f1d183d6dfc6590b5cfe74
- MD5 c0ebdca954e9c20b1300e3cbbd7fc7df
- SHA1 00d5d6e117f766b58301189d65309e1a62a7e5fc
- SHA512 384fc4ef25add7c02545f27c12062240c86fa99d0701700a0230656d35c833ecb0a2d8bd4b07dab2fc3d2b8684fb01c84bb7c8df96b7ccf2cd8232ef7278ffc1
- SSDEEP 98304:3kQS2X51zWrXHakhmkj59RqgQA1rdWJQdrz55xpO9K8:3kuJYekckNSglBkQdrz55PR8
- TLSH T1E746C00BAAF881BAC876D039C6574AAFD7F274010531A65F57910B192F73B229F2F325
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Family: ValleyRat
ValleyRat stage2 is a backdoor written in C++.
- Detects ValleyRAT payload 7 IoCs
resource yara_rule behavioral1/memory/1152-33-0x000001AB6F0B0000-0x000001AB6F119000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/1152-34-0x000001AB6F2D0000-0x000001AB6F340000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/1152-35-0x000001AB6F2D0000-0x000001AB6F340000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/1152-38-0x000001AB6F2D0000-0x000001AB6F340000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/1152-40-0x000001AB6F2D0000-0x000001AB6F340000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/1152-41-0x000001AB6F2D0000-0x000001AB6F340000-memory.dmp family_valleyrat_stage_2_v2 behavioral1/memory/1152-74-0x000001AB6F2D0000-0x000001AB6F340000-memory.dmp family_valleyrat_stage_2_v2 - Badlisted process makes network request 5 IoCs
Network request originating from process or tool commonly abused by malware.
flow pid Process 26 1152 rundll32.exe 27 1152 rundll32.exe 29 1152 rundll32.exe 32 1152 rundll32.exe 35 1152 rundll32.exe - Executes dropped EXE 1 IoCs
pid Process 2696 rundll32.exe - Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Enumerates connected drives 3 TTPs 22 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\V: rundll32.exe File opened (read-only) \??\X: rundll32.exe File opened (read-only) \??\E: rundll32.exe File opened (read-only) \??\H: rundll32.exe File opened (read-only) \??\I: rundll32.exe File opened (read-only) \??\J: rundll32.exe File opened (read-only) \??\K: rundll32.exe File opened (read-only) \??\M: rundll32.exe File opened (read-only) \??\O: rundll32.exe File opened (read-only) \??\S: rundll32.exe File opened (read-only) \??\T: rundll32.exe File opened (read-only) \??\U: rundll32.exe File opened (read-only) \??\Z: rundll32.exe File opened (read-only) \??\B: rundll32.exe File opened (read-only) \??\P: rundll32.exe File opened (read-only) \??\W: rundll32.exe File opened (read-only) \??\Y: rundll32.exe File opened (read-only) \??\G: rundll32.exe File opened (read-only) \??\L: rundll32.exe File opened (read-only) \??\N: rundll32.exe File opened (read-only) \??\Q: rundll32.exe File opened (read-only) \??\R: rundll32.exe - Looks up external IP address via web service 1 TTPs 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 28 api.ipify.org 29 api.ipify.org 34 ip-api.com - Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\system32\rundll32.exe rundll32.exe File opened for modification C:\Windows\system32\cRClIENt.dLL rundll32.exe - Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 4172 cmd.exe - Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname rundll32.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain rundll32.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe 1152 rundll32.exe - Suspicious behavior: LoadsDriver 64 IoCs
pid Process 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found 656 Process not Found - Suspicious use of AdjustPrivilegeToken 40 IoCs
description pid Process Token: SeDebugPrivilege 1152 rundll32.exe Token: SeLoadDriverPrivilege 1152 rundll32.exe Token: SeTakeOwnershipPrivilege 1152 rundll32.exe Token: SeIncBasePriorityPrivilege 1152 rundll32.exe Token: SeTcbPrivilege 1152 rundll32.exe Token: SeDebugPrivilege 1152 rundll32.exe Token: SeCreateTokenPrivilege 1152 rundll32.exe Token: SeAssignPrimaryTokenPrivilege 1152 rundll32.exe Token: SeLockMemoryPrivilege 1152 rundll32.exe Token: SeIncreaseQuotaPrivilege 1152 rundll32.exe Token: SeMachineAccountPrivilege 1152 rundll32.exe Token: SeTcbPrivilege 1152 rundll32.exe Token: SeSecurityPrivilege 1152 rundll32.exe Token: SeTakeOwnershipPrivilege 1152 rundll32.exe Token: SeLoadDriverPrivilege 1152 rundll32.exe Token: SeSystemProfilePrivilege 1152 rundll32.exe Token: SeSystemtimePrivilege 1152 rundll32.exe Token: SeProfSingleProcessPrivilege 1152 rundll32.exe Token: SeIncBasePriorityPrivilege 1152 rundll32.exe Token: SeCreatePagefilePrivilege 1152 rundll32.exe Token: SeCreatePermanentPrivilege 1152 rundll32.exe Token: SeBackupPrivilege 1152 rundll32.exe Token: SeRestorePrivilege 1152 rundll32.exe Token: SeShutdownPrivilege 1152 rundll32.exe Token: SeDebugPrivilege 1152 rundll32.exe Token: SeAuditPrivilege 1152 rundll32.exe Token: SeSystemEnvironmentPrivilege 1152 rundll32.exe Token: SeChangeNotifyPrivilege 1152 rundll32.exe Token: SeRemoteShutdownPrivilege 1152 rundll32.exe Token: SeUndockPrivilege 1152 rundll32.exe Token: SeSyncAgentPrivilege 1152 rundll32.exe Token: SeEnableDelegationPrivilege 1152 rundll32.exe Token: SeManageVolumePrivilege 1152 rundll32.exe Token: SeImpersonatePrivilege 1152 rundll32.exe Token: SeCreateGlobalPrivilege 1152 rundll32.exe Token: 31 1152 rundll32.exe Token: 32 1152 rundll32.exe Token: 33 1152 rundll32.exe Token: 34 1152 rundll32.exe Token: 35 1152 rundll32.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1152 rundll32.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1152 wrote to memory of 4172 1152 rundll32.exe 99 PID 4172 wrote to memory of 2524 4172 cmd.exe 100 - Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\6d085a5d903e28a79ea368e2909db2c72f50dc32f6f1d183d6dfc6590b5cfe74.dll,#11⤵
- Badlisted process makes network request
- Enumerates connected drives
- Drops file in System32 directory
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1152 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c start "" "C:\Windows\System32\rundll32.exe" "C:\Windows\system32\CRClient.dll",EBWebView "C:\Windows\system32\rundll32.exe"2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:4172 -
C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" "C:\Windows\system32\CRClient.dll",EBWebView "C:\Windows\system32\rundll32.exe"3⤵PID:2524
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C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe1⤵
- Executes dropped EXE
PID:2696
Network
MITRE ATT&CK Enterprise v16
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Public\35`)$(='$}]{,{73\72,''^##^!.76
- Size 91KB
- SHA256 46883bc25c77678f60c1b836f4c438d87158c9af6b229f533522f635a0d5276e
- MD5 d751a1ebc49ecd3ce75ef683878057db
- SHA1 8887fc3afcdf48721312d8df9865c6c8234b8614
- SHA512 f0565d8b7c92877327bc8939cf09d21010dbb0498200f358f7d060ae70839a2349a0a2bc6d080be531400b47529d5e7fe0e7a425929096e22c77760f8a498e4d
- SSDEEP 1536:AtFSIfIlTfynQGkaeEa69TXdZSip9M+PccXX6G+2+z2q:pIfIlT6QGK69TrDDMSzX+2+2q
- TLSH T1CF935B83D35615C6D6AACAB9C1AA9223EF71BC09172553CF4E60B6501F32FE19F39306
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\35`)$(='$}]{,{73\72,''^##^!.76.mui
- Size 91KB
- SHA256 a6ba29b7fbd5607dcac8997e0c8fc8dc6d4dbf44071c8773c21baebe4a16b9fd
- MD5 ef568b1b719d62798a342b57a87f10e0
- SHA1 c1168f8ef6bd344211b5b7b7fc58712c270afbfe
- SHA512 fece987b13a47ce7e680c8ac4e5d93b082896c574d32e2b33758a5f2bef114d0307941635c1a8ed42eb0543060749f0d1811f6a8b5a3533328b4de8d3a33ba0b
- SSDEEP 1536:QPWf08vyyD7plj/FbJ/JJKLACmBWoJ6n+LrA0PbSxXe76OmVuvkQPPg0mAMgvijq:dhf7pN/F1/JJKL9mBpTBzX6OmVuvkQPN
- TLSH T1A69312C5181A33170CBB9CF1172AE43A6B71F2518B14BBE63F29B775AF1A11C95B7820
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\35`)$(='$}]{,{73\92]}+[((!^.69
- Size 16KB
- SHA256 9f326ede322930a7d5e149fa8720802b0623c1972dc54e41a2a73608fb6810dd
- MD5 630c1751ae29f3e1a127afcbcfa7c4d7
- SHA1 1583390bdd47357cf81d116d449f882b908348cb
- SHA512 35dddba42e5e10f32ce122021ea92f8df347df6b968cc1d153b77516c83231c5dc7cec6861a94fe06150a310ede8c84d553f6372615a3f2de902fec93727f8ed
- SSDEEP 192:rvuYacCCpQIw9l0Hnos0jWGxIHnYe+PjP8srcQqwBjtlAnfOnJa:7uoCCpQIY0Hnos0bIHnYPL1tqOUnH
- TLSH T185724B8B4719305AFAD7CA75C2B6866BEC31BAD0A7560AFF0155C1911E81FE05B3D309
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\35`)$(='$}]{,{73\92]}+[((!^.69.mui
- Size 16KB
- SHA256 0cb31469a94a7c3c9d69a3a3f91750986c1387196b4516462ecf72200877ea3f
- MD5 8513d7624ac6810807fe7684dd97d6f0
- SHA1 caf236f4fdc2eea3e8e4ce3c7f2d3ea1af87deef
- SHA512 50cf1db574089fe45122e0415571007ad36c28066e50f9a5e3e839426e87518d24628061122f8f6f1266708ce390cc40b861638a404ab09c5dbc0f56031d093c
- SSDEEP 384:QyHTVrBIEnvooYvRmCkyXT5TbL+oS0q/pgTMmqxd6WRK1vnlZDY4nD:QqT1BIEvo9RmCkyXT5nWb/pgImGfYNlr
- TLSH T19372D14F25DF24C9AB8D7A2D34FA26D8F6463B840688C85BF1AFC57072C81874BB64D0
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Windows\System32\rundll32.exe
- Size 70KB
- SHA256 b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa
- MD5 ef3179d498793bf4234f708d3be28633
- SHA1 dd399ae46303343f9f0da189aee11c67bd868222
- SHA512 02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e
- SSDEEP 1536:J8qpnO/qRUNReI3fu6Uw2mTARPw2cm+YRQln5IUmDjoX:C/YUNRBfukTreXRQln5I
- TLSH T16B630BC9A66460F4E077953444734E099272BC22D7625ADF54F0F17C0FF36E0A93AAAB
- MD5 SHA1 SHA512 SSDEEP TLSH