valleyrat_s2 | 6474bc0d80613519263dea5bcaaf136baece2eca0c3375c653bedc45f53626a3

Analysis

max time kernel
149s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
09/04/2026, 07:57

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General

Target
6474bc0d80613519263dea5bcaaf136baece2eca0c3375c653bedc45f53626a3.dll
Size 650KB
Sample260409-jtnfpab18j
SHA256 6474bc0d80613519263dea5bcaaf136baece2eca0c3375c653bedc45f53626a3
MD5 d05c8dd66ba302102a9587e4ffb2740c
SHA1 4fb822bffcdf4a720dacfea220813e93b69fb7ca
SHA512 295a07eeef980714b7a986faa19c3b8567ebc36a7fd90ea1f0721fc2337c6b9250a7629f852f280565e55444f6dcb72f19fcc1201f5534ddc30d92ffeb347c46
SSDEEP 12288:XmEwtcQLG98Yp4upJFBANIwDNKVKQ7aZNGadJEvkrOscMGJn/s15B:XmEwtciYp4yJANViKnXGadJssDGxs15B
TLSH
T1E3E49C217680C032D19B113495BB9BB25EBDB83217A5A0CFF7D45E7A1E603E1EA3435B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery valleyrat_s2

Malware Config

Extracted

Family

valleyrat_s2

Version

pphundt.icu:6667

Attributes

campaign_date
2026. 4. 9

Signatures

Detects ValleyRAT payload 1 IoCs

resource	yara_rule
behavioral2/memory/3564-0-0x0000000002B80000-0x0000000002BC6000-memory.dmp	family_valleyrat_stage_2_v2

ValleyRat
ValleyRat stage2 is a backdoor written in C++.
backdoor valleyrat_s2
Valleyrat_s2 family
valleyrat_s2

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3564	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 768 wrote to memory of 3564	768	rundll32.exe	79

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6474bc0d80613519263dea5bcaaf136baece2eca0c3375c653bedc45f53626a3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:768
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6474bc0d80613519263dea5bcaaf136baece2eca0c3375c653bedc45f53626a3.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3564

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3564-0-0x0000000002B80000-0x0000000002BC6000-memory.dmp

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