MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 27ef8e01f2cc70843dfc973156abacf1f2abf601d3055476084ca8991a2f02c5. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


ValleyRAT


Vendor detections: 16


Intelligence 16 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 27ef8e01f2cc70843dfc973156abacf1f2abf601d3055476084ca8991a2f02c5
SHA3-384 hash: ae2ef6b3d455df166b85273f09c3f055299f1fa7a0292fc5ba5278923939b9faf1e0ccca2d2412fae5d2e32104b0dc5f
SHA1 hash: b3d8eaa541259bc78a1f11b304e55a3dc06c59a2
MD5 hash: dfa94b0185b88f097d6eb93b215ebd1c
humanhash: mississippi-sink-harry-may
File name:Quark_X64.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:2'397'128 bytes
First seen:2026-07-03 11:51:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1b45d79d9bf15e81b192486371131e04 (1 x ValleyRAT)
ssdeep 49152:iik/x1UlttWsdojw60IM3SbYETMaw8J2wo30yQ+1Rg1+mole:ezQq0kYbapJtoEylY+Je
TLSH T186B5AF9573F9074CF2FB963DADB04919E03AFC2ADE32D65F0051318A5D3AA2149A5F23
TrID 37.0% (.EXE) Win64 Executable (generic) (6522/11/2)
28.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
11.5% (.EXE) OS/2 Executable (generic) (2029/13)
11.3% (.EXE) Generic Win/DOS Executable (2002/3)
11.3% (.EXE) DOS Executable (generic) (2000/1)
Magika pebin
dhash icon 820c1c7860414aa2 (1 x ValleyRAT)
Reporter Ling
Tags:exe SilverFox Trojan/SilverFox.sa ValleyRAT


Avatar
CNGaoLing
Trojan/SilverFox.sa
IOC (IP 27.124.18.164:63016) (IP 27.124.18.166:63026) (IP 27.124.18.170:63036)

Intelligence

File Origin
# of uploads :
1
# of downloads :
171
Origin country :
US US
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
Quark_X64.exe
Verdict:
Malicious activity
Analysis date:
2026-07-03 10:35:57 UTC
Tags:
auto-reg valleyrat rat silverfox winos
Link:
https://app.any.run/tasks/a95251e8-d0c8-466c-a4c0-5c2d33fdbb3c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
WinosStager
Create hunting rule
Link:
https://www.capesandbox.com/analysis/72721/
Detection(s):
SecuriteInfo.com.Win64.MalwareX-gen.21655862.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a47908c762b0b26f3cf5b04
Tags:
obfuscated dropper remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Searching for synchronization primitives
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Deleting a recently created file
Connection attempt
Sending a custom TCP request
Сreating synchronization primitives
Setting a keyboard event handler
Launching a service
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Deleting of the original file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm crypto fingerprint installer-heuristic invalid-signature microsoft_visual_cc packed signed
Link:
https://www.filescan.io/uploads/6a47a23f78dc6220940a4c26/reports/526b9dc6-3f29-410d-8eec-961810f2f771/overview
Verdict:
Malicious
Labled as:
Win64/GenKryptik.HSQB trojan
Link:
https://www.hybrid-analysis.com/sample/27ef8e01f2cc70843dfc973156abacf1f2abf601d3055476084ca8991a2f02c5
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-07-03T07:48:00Z UTC
Last seen:
2026-07-05T00:53:00Z UTC
Hits:
~100
Detections:
HEUR:Trojan.Win64.Generic HEUR:Trojan.Win32.Agentb.gen Trojan-Spy.Win32.KeyLogger.sb Trojan-Dropper.Win32.Dapato.sb Backdoor.Win32.Agent.myxheo Backdoor.Agent.TCP.C&C Trojan.Win32.Agent.sb PDM:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/27ef8e01f2cc70843dfc973156abacf1f2abf601d3055476084ca8991a2f02c5/results?tab=lookup
Malware family:
ValleyRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1ed56958-a9a2-401a-a70d-0165633151d3
Score:
53%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/27ef8e01f2cc70843dfc973156abacf1f2abf601d3055476084ca8991a2f02c5
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/27ef8e01f2cc70843dfc973156abacf1f2abf601d3055476084ca8991a2f02c5/
Verdict:
Malicious
Threat:
Family.VALLEYRAT
Link:
https://tip.neiki.dev/file/27ef8e01f2cc70843dfc973156abacf1f2abf601d3055476084ca8991a2f02c5
Threat name:
Win64.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2026-07-03 10:36:10 UTC
File Type:
PE+ (Exe)
Extracted files:
10
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=e7xy4apszryiipp4s4yvnk5m6hzkx5qb2mcvi5qijsujsgrpalcq._file
Result
Malware family:
valleyrat_s2
Create hunting rule
Score:
  10/10
Tags:
family:valleyrat_s2 backdoor persistence privilege_escalation
Link:
https://tria.ge/reports/260703-n1dx2sdt2r/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Enumerates connected drives
Checks computer location settings
Deletes itself
Event Triggered Execution: Component Object Model Hijacking
Executes dropped EXE
Loads dropped DLL
Family: ValleyRat
Malware Config
C2 Extraction:
27.124.18.164:63016
27.124.18.166:63026
27.124.18.170:63036
Unpacked files
SH256 hash:
27ef8e01f2cc70843dfc973156abacf1f2abf601d3055476084ca8991a2f02c5
MD5 hash:
dfa94b0185b88f097d6eb93b215ebd1c
SHA1 hash:
b3d8eaa541259bc78a1f11b304e55a3dc06c59a2
Link:
https://www.unpac.me/results/4c0dbde7-75cc-46b3-9f89-6e32f1ec915a/
SH256 hash:
8e294848afc1d194f29f143b419662cc32bc00b9f1a29c6a157570cb4f0aef21
MD5 hash:
66ca22660a0afaa86461b4d46de8fbae
SHA1 hash:
41fad648fa58aaeeed4a5194cb3341c50213d7bb
Link:
https://www.unpac.me/results/4c0dbde7-75cc-46b3-9f89-6e32f1ec915a/
SH256 hash:
f53736cdd56af0080b0ff61541810f7a3c5b4a7cfb91cb972188c25bc3eb6ce0
MD5 hash:
f21b51127bd1797612b3c747a8c7ceb9
SHA1 hash:
0f632d03fdc04ad2a5d03ca91e2e0e71ef058b95
Link:
https://www.unpac.me/results/4c0dbde7-75cc-46b3-9f89-6e32f1ec915a/
Malware family:
ValleyRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/27ef8e01f2cc/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/27ef8e01f2cc70843dfc973156abacf1f2abf601d3055476084ca8991a2f02c5

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

ValleyRAT

Executable exe 27ef8e01f2cc70843dfc973156abacf1f2abf601d3055476084ca8991a2f02c5

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/72721/

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