valleyrat_s2 | 7078c4b11ebe8f45107c5e04b1ea4476b95c9b85c470a3e14ff8b2539b7b7567

Analysis

max time kernel
149s
max time network
143s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/09/2026, 09:29

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General

Target
7078c4b11ebe8f45107c5e04b1ea4476b95c9b85c470a3e14ff8b2539b7b7567.dll
Size 7.2MB
Sample260903-lgap6stdrb
SHA256 7078c4b11ebe8f45107c5e04b1ea4476b95c9b85c470a3e14ff8b2539b7b7567
MD5 5d96455a6810937648486cbe094df955
SHA1 1fb53deea07f9959c079c66bba52cc4f7fde50f1
SHA512 17bc9fa5223dfe350747d5b424bd502587992139f4a89bb64dd1d27a43613982c196b741ab918e0f720fad9a8d0276687a4d1802f403d980ed6c1d3076b15449
SSDEEP 98304:+5L6tCdiTFSeFuN8l2hQzzt8cXK7xI+iZ7q1zPPXNAjtVa/uh:RCdIF+8ltPCxI+7NAjtVa/uh
TLSH
T184767C462AAC0159E173A17ACA57CA3AE7B27C056321A79F00E07E9BFF773510D3A315
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor defense_evasion discovery execution valleyrat_s2 persistence ransomware

Malware Config

Signatures

Family: ValleyRat
ValleyRat stage2 is a backdoor written in C++.
backdoor valleyrat_s2

Detects ValleyRAT payload 7 IoCs

resource	yara_rule
behavioral2/memory/1492-5-0x000001F6CA180000-0x000001F6CA1DB000-memory.dmp	family_valleyrat_stage_2_v2
behavioral2/memory/1492-6-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp	family_valleyrat_stage_2_v2
behavioral2/memory/1492-7-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp	family_valleyrat_stage_2_v2
behavioral2/memory/1492-10-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp	family_valleyrat_stage_2_v2
behavioral2/memory/1492-12-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp	family_valleyrat_stage_2_v2
behavioral2/memory/1492-13-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp	family_valleyrat_stage_2_v2
behavioral2/memory/1492-15-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp	family_valleyrat_stage_2_v2

Badlisted process makes network request 6 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
7	1492	rundll32.exe
8	1492	rundll32.exe
9	1492	rundll32.exe
10	1492	rundll32.exe
12	1492	rundll32.exe
13	1492	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
4888	rundll32.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\L:	rundll32.exe
File opened (read-only)	\??\X:	rundll32.exe
File opened (read-only)	\??\H:	rundll32.exe
File opened (read-only)	\??\N:	rundll32.exe
File opened (read-only)	\??\Q:	rundll32.exe
File opened (read-only)	\??\U:	rundll32.exe
File opened (read-only)	\??\G:	rundll32.exe
File opened (read-only)	\??\I:	rundll32.exe
File opened (read-only)	\??\K:	rundll32.exe
File opened (read-only)	\??\O:	rundll32.exe
File opened (read-only)	\??\P:	rundll32.exe
File opened (read-only)	\??\R:	rundll32.exe
File opened (read-only)	\??\W:	rundll32.exe
File opened (read-only)	\??\Z:	rundll32.exe
File opened (read-only)	\??\D:	rundll32.exe
File opened (read-only)	\??\J:	rundll32.exe
File opened (read-only)	\??\M:	rundll32.exe
File opened (read-only)	\??\S:	rundll32.exe
File opened (read-only)	\??\T:	rundll32.exe
File opened (read-only)	\??\V:	rundll32.exe
File opened (read-only)	\??\Y:	rundll32.exe
File opened (read-only)	\??\B:	rundll32.exe

Looks up external IP address via web service 1 TTPs 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

discovery

Internet Connection Discovery

T1016.001

flow	ioc
1	api.ipify.org
1	icanhazip.com
9	api.ipify.org
13	icanhazip.com

Discovers running processes 1 TTPs 3 IoCs

Running process information can be used to identify security tools or plan follow-on actions.

discovery

Process Discovery

T1057

pid	Process
4716	tasklist.exe
1176	tasklist.exe
2984	tasklist.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\rundll32.exe	rundll32.exe

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4072	cmd.exe
260	cmd.exe

Delays execution with timeout.exe 3 IoCs

defense_evasion

pid	Process
4876	timeout.exe
2236	timeout.exe
5016	timeout.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
3272	taskkill.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe
1492	rundll32.exe

Suspicious use of AdjustPrivilegeToken 44 IoCs

description	pid	Process
Token: SeDebugPrivilege	1492	rundll32.exe
Token: SeLoadDriverPrivilege	1492	rundll32.exe
Token: SeTakeOwnershipPrivilege	1492	rundll32.exe
Token: SeIncBasePriorityPrivilege	1492	rundll32.exe
Token: SeTcbPrivilege	1492	rundll32.exe
Token: SeDebugPrivilege	3272	taskkill.exe
Token: SeDebugPrivilege	1492	rundll32.exe
Token: SeCreateTokenPrivilege	1492	rundll32.exe
Token: SeAssignPrimaryTokenPrivilege	1492	rundll32.exe
Token: SeLockMemoryPrivilege	1492	rundll32.exe
Token: SeIncreaseQuotaPrivilege	1492	rundll32.exe
Token: SeMachineAccountPrivilege	1492	rundll32.exe
Token: SeTcbPrivilege	1492	rundll32.exe
Token: SeSecurityPrivilege	1492	rundll32.exe
Token: SeTakeOwnershipPrivilege	1492	rundll32.exe
Token: SeLoadDriverPrivilege	1492	rundll32.exe
Token: SeSystemProfilePrivilege	1492	rundll32.exe
Token: SeSystemtimePrivilege	1492	rundll32.exe
Token: SeProfSingleProcessPrivilege	1492	rundll32.exe
Token: SeIncBasePriorityPrivilege	1492	rundll32.exe
Token: SeCreatePagefilePrivilege	1492	rundll32.exe
Token: SeCreatePermanentPrivilege	1492	rundll32.exe
Token: SeBackupPrivilege	1492	rundll32.exe
Token: SeRestorePrivilege	1492	rundll32.exe
Token: SeShutdownPrivilege	1492	rundll32.exe
Token: SeDebugPrivilege	1492	rundll32.exe
Token: SeAuditPrivilege	1492	rundll32.exe
Token: SeSystemEnvironmentPrivilege	1492	rundll32.exe
Token: SeChangeNotifyPrivilege	1492	rundll32.exe
Token: SeRemoteShutdownPrivilege	1492	rundll32.exe
Token: SeUndockPrivilege	1492	rundll32.exe
Token: SeSyncAgentPrivilege	1492	rundll32.exe
Token: SeEnableDelegationPrivilege	1492	rundll32.exe
Token: SeManageVolumePrivilege	1492	rundll32.exe
Token: SeImpersonatePrivilege	1492	rundll32.exe
Token: SeCreateGlobalPrivilege	1492	rundll32.exe
Token: 31	1492	rundll32.exe
Token: 32	1492	rundll32.exe
Token: 33	1492	rundll32.exe
Token: 34	1492	rundll32.exe
Token: 35	1492	rundll32.exe
Token: SeDebugPrivilege	4716	tasklist.exe
Token: SeDebugPrivilege	1176	tasklist.exe
Token: SeDebugPrivilege	2984	tasklist.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1492	rundll32.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 3272	1492	rundll32.exe	89
PID 1492 wrote to memory of 4072	1492	rundll32.exe	94
PID 4072 wrote to memory of 260	4072	cmd.exe	96
PID 260 wrote to memory of 4716	260	cmd.exe	97
PID 260 wrote to memory of 4820	260	cmd.exe	98
PID 260 wrote to memory of 2236	260	cmd.exe	99
PID 260 wrote to memory of 1176	260	cmd.exe	101
PID 260 wrote to memory of 1420	260	cmd.exe	102
PID 260 wrote to memory of 5016	260	cmd.exe	103
PID 260 wrote to memory of 2984	260	cmd.exe	104
PID 260 wrote to memory of 1384	260	cmd.exe	105
PID 260 wrote to memory of 4876	260	cmd.exe	106

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.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7078c4b11ebe8f45107c5e04b1ea4476b95c9b85c470a3e14ff8b2539b7b7567.dll,#1
1⤵
- Badlisted process makes network request
- Enumerates connected drives
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Windows\system32\taskkill.exe
  taskkill /f /im cmd.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:3272
- C:\Windows\system32\cmd.exe
  cmd.exe /c start "" /B cmd /C C:\Users\Public\Libraries\S-1-5-21-1738198120-2966725515-3980530802\S-1-5-21-1738198120-2966725515-3980530802.bAt
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4072
- - C:\Windows\system32\cmd.exe
    cmd /C C:\Users\Public\Libraries\S-1-5-21-1738198120-2966725515-3980530802\S-1-5-21-1738198120-2966725515-3980530802.bAt
    3⤵
    - Executes a command shell one-liner
    - Suspicious use of WriteProcessMemory
    PID:260
  - - C:\Windows\system32\tasklist.exe
      TASKLIST /FI "IMAGENAME eq rundll32.exe" /FO CSV
      4⤵
      Discovers running processes
      Suspicious use of AdjustPrivilegeToken
      PID:4716
  - - C:\Windows\system32\find.exe
      FIND /I "rundll32.exe"
      4⤵
      PID:4820
  - - C:\Windows\system32\timeout.exe
      TIMEOUT /t 60 /nobreak
      4⤵
      Delays execution with timeout.exe
      PID:2236
  - - C:\Windows\system32\tasklist.exe
      TASKLIST /FI "IMAGENAME eq rundll32.exe" /FO CSV
      4⤵
      Discovers running processes
      Suspicious use of AdjustPrivilegeToken
      PID:1176
  - - C:\Windows\system32\find.exe
      FIND /I "rundll32.exe"
      4⤵
      PID:1420
  - - C:\Windows\system32\timeout.exe
      TIMEOUT /t 60 /nobreak
      4⤵
      Delays execution with timeout.exe
      PID:5016
  - - C:\Windows\system32\tasklist.exe
      TASKLIST /FI "IMAGENAME eq rundll32.exe" /FO CSV
      4⤵
      Discovers running processes
      Suspicious use of AdjustPrivilegeToken
      PID:2984
  - - C:\Windows\system32\find.exe
      FIND /I "rundll32.exe"
      4⤵
      PID:1384
  - - C:\Windows\system32\timeout.exe
      TIMEOUT /t 60 /nobreak
      4⤵
      Delays execution with timeout.exe
      PID:4876

C:\Windows\system32\rundll32.exe
C:\Windows\system32\rundll32.exe
1⤵
- Executes dropped EXE
PID:4888

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Process Discovery

T1057

Query Registry

T1012

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

S-1-5-21-1738198120-2966725515-3980530802.bAt

Path C:\Users\Public\Libraries\S-1-5-21-1738198120-2966725515-3980530802\S-1-5-21-1738198120-2966725515-3980530802.bAt
Size 1KB
SHA256 8ebaa722716c655a063b5859d77c5a8fff02ab4824b72031504e57a9ef27eaf9
MD5 93cbb1ed27cfd948319caa31864500d6
SHA1 398e8375c25d04c41f4a2b40ff4dc4330b2f9ba0
SHA512 faf5db347ace7b8b2755d5b7e65b3ea718dd3e36cb41848648067f3fa90a69742050a8a39166e35900d0d82089643b851e44d627e1471c56b819ddf7f949e1d3
TLSH
T16031DC9FC4134D1C431402DB234ACC6FC690F057EDC631A0B0E82B952356E9D0856AED
MD5 SHA1 SHA512 TLSH

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rundll32.exe

Path C:\Windows\System32\rundll32.exe
Size 88KB
SHA256 4b84dc6750937eb47b19cde0d23debd4d2f2211300171b36d13ef5ad11dd60f9
MD5 025b13bf5652712d9b596e6766a9c386
SHA1 def4011b5536983285472ba75c22c6a2410edf6a
SHA512 f9983b897ef7ecbeb6cbfe599b24f5aa8651058d2e3313534a2a5e076f93fc3354784c05260b42fa828e48a55b5c005bfaa9db4e387351bf2e665ea0245c3a1e
SSDEEP 1536:7i3jG+UJuhM2HLJPl1M8CFYNMjYrZ3bXWgmqR9jR:KkuB5GFYNME3C9KR
TLSH
T11993185E72A830E5E9369139C4A24605E3B1B03563135BFF06E0C2BD5F23AE5AD39F91
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1492-5-0x000001F6CA180000-0x000001F6CA1DB000-memory.dmp

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memory/1492-6-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp

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memory/1492-7-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp

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memory/1492-10-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp

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memory/1492-12-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp

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memory/1492-13-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp

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memory/1492-15-0x000001F6CB860000-0x000001F6CB8C2000-memory.dmp

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