MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7352af121cb003e2da20897a5da8f3bbb74e15294bbbb6223344318fb731f93a. 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


KoiLoader


Vendor detections: 14


Intelligence 14 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7352af121cb003e2da20897a5da8f3bbb74e15294bbbb6223344318fb731f93a
SHA3-384 hash: acd4069cd7df9261f26fd444ff71f2cd07a4d97a17e7f15cd1d2ffee7687ad4d4ef615abaaf00a7d8912f921ff416031
SHA1 hash: 47aa90bb8ac56a4a697e6750a4a980669d36a8aa
MD5 hash: 3826d6e4578b3fcf87accf5b7979103d
humanhash: speaker-purple-october-mirror
File name:supraoesophagealYdF.exe
Download: download sample
Signature KoiLoader
Create hunting rule
File size:236'544 bytes
First seen:2025-04-02 14:44:11 UTC
Last seen:2025-04-04 09:21:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 66deda4204cb009d8c01c3f28c17567f (34 x KoiLoader, 2 x AZORult)
ssdeep 3072:BNwCrquaP24/h7Q22oWvjWn+V4t4jrv34CovCWfhalxqlemcosuF07SCv:/UhAoAZoLfhavql9copFBCv
TLSH T141345C1079F00031C6953E3E67874D54A63CF1D5AB99DEFBF38C8A9F0AEC085A436966
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 k3dg3___
Tags:exe KoiLoader KoiStealer TA4561

Intelligence

File Origin
# of uploads :
2
# of downloads :
315
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
7352af121cb003e2da20897a5da8f3bbb74e15294bbbb6223344318fb731f93a.exe
Verdict:
No threats detected
Analysis date:
2025-04-02 20:05:04 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/901febf6-b193-4990-8c9c-b7feb2b07c6a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
KoiLoader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/200/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67ed4f7b855e5ec5240c4e33
Tags:
emotet smarts virus micro
Result
Verdict:
Malware
Maliciousness:
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
microsoft_visual_cc
Link:
https://www.filescan.io/uploads/67ed4d87f274bf2d8e2e798a/reports/4ce17f1c-85c8-4852-a87c-80c52d6f4112/overview
Verdict:
Malicious
Labled as:
Lazy.Generic
Link:
https://www.hybrid-analysis.com/sample/7352af121cb003e2da20897a5da8f3bbb74e15294bbbb6223344318fb731f93a
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7d22facc-5810-46ac-8598-ace29db4338d
Result
Threat name:
AZORult++, KoiLoader
Create hunting rule
Detection:
malicious
Classification:
bank.troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1654812
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contain functionality to detect virtual machines
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to compare user and computer (likely to detect sandboxes)
Contains functionality to inject code into remote processes
Detected AZORult++ Trojan
Found evasive API chain (may stop execution after checking locale)
Found evasive API chain (may stop execution after checking mutex)
Found malware configuration
Malicious sample detected (through community Yara rule)
Yara detected KoiLoader
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/7352af121cb003e2da20897a5da8f3bbb74e15294bbbb6223344318fb731f93a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7352af121cb003e2da20897a5da8f3bbb74e15294bbbb6223344318fb731f93a/
Threat name:
Win32.Trojan.Koiloader
Create hunting rule
Status:
Malicious
First seen:
2025-04-02 14:45:27 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=onjk6eq4wab6fwrarf5f3khtxo3u4fjjjo53mirtiqyy7nzr7e5a._file
Verdict:
malicious
Label(s):
koiloader
Create hunting rule
Similar samples:
error
KoiLoader
Result
Malware family:
koiloader
Create hunting rule
Score:
  10/10
Tags:
family:koiloader discovery loader
Link:
https://tria.ge/reports/250402-r39paayshx/
Behaviour
System Location Discovery: System Language Discovery
Detects KoiLoader payload
KoiLoader
Koiloader family
Malware Config
C2 Extraction:
http://217.156.66.15/gnathopoda.php
Verdict:
Suspicious
Tags:
trojan
YARA:
Windows_Generic_Threat_1417511b
Link:
https://app.threat.zone/submission/d1ad04c8-f9bd-41e1-af64-afa083bcd35b
Unpacked files
SH256 hash:
7352af121cb003e2da20897a5da8f3bbb74e15294bbbb6223344318fb731f93a
MD5 hash:
3826d6e4578b3fcf87accf5b7979103d
SHA1 hash:
47aa90bb8ac56a4a697e6750a4a980669d36a8aa
Link:
https://www.unpac.me/results/670d8553-53f3-40c5-b5da-cdd749a1dcd5/
SH256 hash:
44246bcc7f8aabc5ab45b0ed34aec5e2c897cd3e3a5f2e90bc6b56e5b8427051
MD5 hash:
0777b74704df12a7e7626bd623cd08af
SHA1 hash:
c019a8b8a3062ed3230f8f1f77780209bd42f51b
Detections:
win_koiloader_auto
Create hunting rule
win_mal_Koi_loader_decrypted
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/670d8553-53f3-40c5-b5da-cdd749a1dcd5/
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/7352af121cb003e2da20897a5da8f3bbb74e15294bbbb6223344318fb731f93a

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
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:KoiLoader
Create hunting rule
Author:YungBinary
Description:KoiLoader
Rule name:Windows_Generic_Threat_1417511b
Create hunting rule
Author:Elastic Security

File information

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

  
Delivery method
Distributed via e-mail link
Cape
Cape
https://www.capesandbox.com/analysis/200/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineA
KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileW

Comments