MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0. 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


Threat unknown


Vendor detections: 14


Intelligence 14 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0
SHA3-384 hash: 72653e646b38fe492d84313ce596e6db0370282b2b18dd203eee5c76fa37c2d707ca7c1a1b663f050f088f91a4c27d2b
SHA1 hash: d322d7e764a14c88d1cefa6925c997a86eff064f
MD5 hash: 5a378a55d2972044ba78d10a366306d0
humanhash: lion-fruit-quebec-nineteen
File name:steamhelper.exe
Download: download sample
File size:8'992'397 bytes
First seen:2025-12-31 05:31:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1418e44b536f42ef5db8fd35c961985c (2 x DCRat, 1 x Blackmoon, 1 x Vidar)
ssdeep 196608:ZB9elWWXZ0Wa3sDcJlEQz089lGvbVOZO6KvbIv5w:b9elrZ0Wa3sDSlpzfLGTVA5w
TLSH T1BE963321B6C49133C2B61EB86E2C926D963E7F202F1459C76BE03E891E351C25F39677
TrID 40.3% (.EXE) Win64 Executable (generic) (10522/11/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4504/4/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter Ling
Tags:exe Trojan:Win32/Wacatac.F!ml wacatac


Avatar
Ling
Trojan:Win32/Wacatac.F!ml

Intelligence

File Origin
# of uploads :
1
# of downloads :
128
Origin country :
US US
Vendor Threat Intelligence
Malware configuration found for:
Archives PEPacker
Details
Archives
SFX commands and extracted archive contents
PEPacker
extracted components and the unpacked version of the original PE file
Link:
https://research.acce.ciphertechsolutions.com/results/5004694c-c43f-4739-8069-a9c46ef40a48/
Malware family:
n/a
ID:
1
File name:
steamhelper.exe
Verdict:
Malicious activity
Analysis date:
2025-12-31 05:33:36 UTC
Tags:
nuitka delphi python
Link:
https://app.any.run/tasks/eb4552cc-822b-4c61-87b9-38ac88573e42

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/46630/
Detection(s):
Win.Packed.Zusy-10014517-0
Create hunting rule

SecuriteInfo.com.Dropper.Generic_c.AEO.1.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.W32.Troj_Obfusc.Z.gen.Eldorado.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Win32.Trojan.Agent.ALRO1E.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6954b563e148d42004de0c4b
Tags:
vmdetect emotet
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm base64 dllhost expand fingerprint installer installer installer-heuristic krypt lolbin lolbin microsoft_visual_cc overlay overlay packed regsvr32 replace sfx unsafe zusy
Link:
https://www.filescan.io/uploads/6954b5608d1aa9829e27c66c/reports/d216e316-b403-42ae-a5ce-cefdc57359e1/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0
Result
Gathering data
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-31T01:36:00Z UTC
Last seen:
2025-12-31T01:53:00Z UTC
Hits:
~10
Detections:
Trojan-Spy.Win32.Stealer.fors Trojan-Spy.Stealer.TCP.C&C Trojan-Spy.Stealer.HTTP.C&C Trojan-Spy.Win32.Stealer.fort
Link:
https://opentip.kaspersky.com/66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0/results?tab=lookup
Malware family:
LogMeIn
Create hunting rule
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/64d46481-9e4a-4af9-9a10-dd463556a14b
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0
Verdict:
inconclusive
YARA:
6 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout PE Memory-Mapped (Dump)
Link:
https://app.malva.re/file/5a378a55d2972044ba78d10a366306d0
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0/
Verdict:
Malicious
Threat:
Trojan-Spy.Win32.Stealer
Link:
https://tip.neiki.dev/file/66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m3aav6s5sdgc2gs4ftjoiedzmt7hozohj5z2wcmoxnoqfqduwlya._file
Gathering data
Verdict:
Malicious
Tags:
Win.Packed.Zusy-10014517-0
YARA:
n/a
Link:
https://app.threat.zone/submission/279f0134-0044-4708-a968-4e3f4746a2a1
Unpacked files
SH256 hash:
66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0
MD5 hash:
5a378a55d2972044ba78d10a366306d0
SHA1 hash:
d322d7e764a14c88d1cefa6925c997a86eff064f
Link:
https://www.unpac.me/results/c6a6643a-9266-4722-ae70-47e1d7afe4aa/
SH256 hash:
0e8501aaca4e695b5d82116e26ca55b34a28168968364a18d33626425b98e2fc
MD5 hash:
726d8c39586a9ea4751dd491253f2917
SHA1 hash:
16f0bcb542a6e66bba4f5fe0ee4dc068f15c6508
Link:
https://www.unpac.me/results/c6a6643a-9266-4722-ae70-47e1d7afe4aa/
SH256 hash:
2a07e9d82531a6e8707d010d217157303a827d8ecce36f58372401b87849728e
MD5 hash:
6564864bc27d4f1fd140648fbea35a0f
SHA1 hash:
0fbce743661919c46427c59237a2c823155eac31
Link:
https://www.unpac.me/results/c6a6643a-9266-4722-ae70-47e1d7afe4aa/
SH256 hash:
dc55202634e140b9817805094e6631b7241dd5ea31644ad6e0a39acca6db5780
MD5 hash:
fba61a3e479647477625f13e905ced7d
SHA1 hash:
633331a306237922d247482042b5d91b4ddc4902
Detections:
INDICATOR_EXE_Packed_Loader
Create hunting rule
Link:
https://www.unpac.me/results/c6a6643a-9266-4722-ae70-47e1d7afe4aa/
Parent samples :
b0b92ed73b4e9254a4e0d353c09305f7f27def9d3a86d70001b17482f7317ef9
66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0
SH256 hash:
95349cbb0ce9bd2bb939c04e611750eca5d1ac1b8baa53641c28c147a59dc725
MD5 hash:
95b2c0f892fe4c15ac1d4929bcb54df1
SHA1 hash:
b13abc14da4b7f1c0a8f5aacd98f0c6fb18873fd
Link:
https://www.unpac.me/results/c6a6643a-9266-4722-ae70-47e1d7afe4aa/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/66c00afa5d90/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/66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0

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:Borland
Create hunting rule
Author:malware-lu
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
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:HeavensGate
Create hunting rule
Author:kevoreilly
Description:Heaven's Gate: Switch from 32-bit to 64-mode
Rule name:INDICATOR_EXE_Packed_Enigma
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Enigma
Rule name:INDICATOR_EXE_Packed_Loader
Create hunting rule
Author:ditekSHen
Description:Detects packed executables observed in Molerats
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SelfExtractingRAR
Create hunting rule
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:TH_Generic_MassHunt_Win_Malware_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Windows malware mass-hunt rule - 2025
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

Executable exe 66c00afa5d90cc2d1a5c2cd2e4107964fe7765c74f73ab098ebb5d02c074b2f0

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/46630/

Comments