MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 463a99c4d82f346dd9cb1236df6c6acd9dc5f5df50467848efa167b59c635120. 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


Worm.m0yv


Vendor detections: 16


Intelligence 16 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 463a99c4d82f346dd9cb1236df6c6acd9dc5f5df50467848efa167b59c635120
SHA3-384 hash: 389d820419aa13c5e1a5772caa2bb9aade23c808ad64537509537c52b2aba0604fd4d746bde7c1105109ed56e0cf5e11
SHA1 hash: 1be61d66bcf561e7713922b82fc5be40bc9c1599
MD5 hash: f37f105143a4803e3315106d66cd3a99
humanhash: mobile-carpet-glucose-batman
File name:CV_Sales Representative - Job Request PDF.exe
Download: download sample
Signature Worm.m0yv
Create hunting rule
File size:1'787'392 bytes
First seen:2025-03-14 07:21:14 UTC
Last seen:2025-03-14 16:12:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 49152:m10c++OCvkGs9Faa5m2qIguTk/ADv0qYfLNiXicJFFRGNzj3:OB3vkJ9VVVNTkYDvNi7wRGpj3
Threatray 27 similar samples on MalwareBazaar
TLSH T1EB85E02263DDC360CB669133BF69B7057EBF3C614A30B8572F941D7DA960262162C7A3
TrID 63.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
11.6% (.EXE) Win64 Executable (generic) (10522/11/4)
7.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
5.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.9% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter lowmal3
Tags:exe Worm.m0yv

Intelligence

File Origin
# of uploads :
2
# of downloads :
418
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
20250313_201518_Vj5xpPeMwiyIk-XR-MC0w8qmFfMBSY3K.eml
Verdict:
Malicious activity
Analysis date:
2025-03-14 03:10:40 UTC
Tags:
attachments attc-unc m0yv arch-exec sinkhole
Link:
https://app.any.run/tasks/a3cce62a-d57d-43bf-b5df-0fedfdd50633

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67d3f5133962f1a6f471312a
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Loading a system driver
Connection attempt to an infection source
Creating a file in the system32 subdirectories
Creating a file in the %temp% directory
Modifying a system file
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a window
Modifying an executable file
Launching a service
Searching for synchronization primitives
Modifying a system executable file
Launching a process
Enabling autorun for a service
Query of malicious DNS domain
Enabling autorun with the shell\open\command registry branches
Infecting executable files
Sending an HTTP POST request to an infection source
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug anti-vm anti-vm autoit compiled-script evasive fingerprint fingerprint hacktool keylogger lolbin microsoft_visual_cc netsh packed packed packer_detected
Link:
https://www.filescan.io/uploads/67d3d920d2c4beeae92536a0/reports/3f39d272-a28a-472e-88b1-d2bb766d0ffd/overview
Verdict:
Malicious
Labled as:
Expiro.Generic
Link:
https://www.hybrid-analysis.com/sample/463a99c4d82f346dd9cb1236df6c6acd9dc5f5df50467848efa167b59c635120
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0510caa4-8a20-46c7-8b9e-3c579cb5caff
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1638116
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Binary is likely a compiled AutoIt script file
Creates files inside the volume driver (system volume information)
Drops executable to a common third party application directory
Found direct / indirect Syscall (likely to bypass EDR)
Infects executable files (exe, dll, sys, html)
Joe Sandbox ML detected suspicious sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queries random domain names (often used to prevent blacklisting and sinkholes)
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1638116 Sample: CV_Sales Representative - J... Startdate: 14/03/2025 Architecture: WINDOWS Score: 100 52 www.stakemask.xyz 2->52 54 www.publicblockchain.xyz 2->54 56 85 other IPs or domains 2->56 74 Suricata IDS alerts for network traffic 2->74 76 Antivirus detection for dropped file 2->76 78 Antivirus / Scanner detection for submitted sample 2->78 82 6 other signatures 2->82 10 armsvc.exe 1 2->10         started        15 CV_Sales Representative - Job Request PDF.exe 3 2->15         started        17 elevation_service.exe 2->17         started        19 19 other processes 2->19 signatures3 80 Performs DNS queries to domains with low reputation 54->80 process4 dnsIp5 58 dlynankz.biz 85.214.228.140, 53984, 80 STRATOSTRATOAGDE Germany 10->58 60 gjogvvpsf.biz 208.117.43.225, 53948, 53958, 54015 STEADFASTUS United States 10->60 66 14 other IPs or domains 10->66 34 C:\Windows\System32\wbengine.exe, PE32+ 10->34 dropped 36 C:\Windows\System32\wbem\WmiApSrv.exe, PE32+ 10->36 dropped 38 C:\Windows\System32\vds.exe, PE32+ 10->38 dropped 50 134 other malicious files 10->50 dropped 96 Drops executable to a common third party application directory 10->96 98 Infects executable files (exe, dll, sys, html) 10->98 62 acwjcqqv.biz 13.213.51.196, 49722, 49723, 49732 AMAZON-02US United States 15->62 64 ywffr.biz 52.11.240.239, 49720, 49721, 49724 AMAZON-02US United States 15->64 40 C:\Windows\System32\alg.exe, PE32+ 15->40 dropped 42 DiagnosticsHub.Sta...llector.Service.exe, PE32+ 15->42 dropped 44 C:\Windows\System32\AppVClient.exe, PE32+ 15->44 dropped 46 C:\Program Files (x86)\...\armsvc.exe, PE32 15->46 dropped 100 Binary is likely a compiled AutoIt script file 15->100 102 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 15->102 104 Writes to foreign memory regions 15->104 106 Maps a DLL or memory area into another process 15->106 21 svchost.exe 15->21         started        48 C:\Windows\System32\sppsvc.exe, PE32+ 17->48 dropped 108 Found direct / indirect Syscall (likely to bypass EDR) 17->108 110 Creates files inside the volume driver (system volume information) 19->110 file6 signatures7 process8 signatures9 84 Maps a DLL or memory area into another process 21->84 24 7EFPjTEjLAB4.exe 21->24 injected process10 signatures11 86 Found direct / indirect Syscall (likely to bypass EDR) 24->86 27 mfpmp.exe 24->27         started        process12 signatures13 88 Tries to steal Mail credentials (via file / registry access) 27->88 90 Tries to harvest and steal browser information (history, passwords, etc) 27->90 92 Modifies the context of a thread in another process (thread injection) 27->92 94 3 other signatures 27->94 30 7EFPjTEjLAB4.exe 27->30 injected process14 dnsIp15 68 leadmagnetkpis.shop 37.27.60.109, 54010, 54014, 54018 UNINETAZ Iran (ISLAMIC Republic Of) 30->68 70 www.dresses-executive.sbs 199.59.243.160, 53941, 53943, 53947 BODIS-NJUS United States 30->70 72 www.dappbtc.xyz 13.248.169.48, 53922, 53932, 53933 AMAZON-02US United States 30->72 112 Found direct / indirect Syscall (likely to bypass EDR) 30->112 signatures16
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/463a99c4d82f346dd9cb1236df6c6acd9dc5f5df50467848efa167b59c635120
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/463a99c4d82f346dd9cb1236df6c6acd9dc5f5df50467848efa167b59c635120/
Threat name:
Win32.Virus.Expiro
Create hunting rule
Status:
Malicious
First seen:
2025-03-13 18:06:35 UTC
File Type:
PE (Exe)
Extracted files:
27
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=iy5jtrgyf42g3wolci3n63dkzwo4l5o7kbdhqshpuft3lhddkeqa._file
Verdict:
malicious
Label(s):
m0yv
Create hunting rule
expiro
Create hunting rule
Similar samples:
0b3ad575168e0457905f19bb5304a8ea8cce461d7b1ebd0964d1171374271e47
Worm.m0yv
301dc94eb5d63a0fcd4a53c6b378d5d20ae42d0e56e0a5ab584f0baa59b5c8d6
Worm.m0yv
3a4bf749beed4f07deb352b6e0faf28c5c2f28d62374a8bbb3eeeb67b1096851
Worm.m0yv
a06f961f856857eea5b506b9bbf220df937bf7778246cc72e502c451e5311621
Worm.m0yv
d28abef1785c790448448e450d61c686d8778602f789830e41a92694b4439c19
Worm.m0yv
error
Worm.m0yv
+ 17 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery spyware stealer
Link:
https://tria.ge/reports/250314-h7aajsymt8/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
AutoIT Executable
Drops file in System32 directory
Suspicious use of SetThreadContext
Executes dropped EXE
Reads user/profile data of web browsers
Verdict:
Malicious
Tags:
trojan expiro
YARA:
SUSP_Imphash_Mar23_3
Link:
https://app.threat.zone/submission/94a7c3a4-4d7a-4839-bce9-98c619942ac3
Unpacked files
SH256 hash:
463a99c4d82f346dd9cb1236df6c6acd9dc5f5df50467848efa167b59c635120
MD5 hash:
f37f105143a4803e3315106d66cd3a99
SHA1 hash:
1be61d66bcf561e7713922b82fc5be40bc9c1599
Link:
https://www.unpac.me/results/46ea8637-d81f-4ed1-af11-b1306e79f72b/
SH256 hash:
ddd3b962894a7adef91073b3e415ba42978ff4c12651bd6d533fb156c3768253
MD5 hash:
e473d6f8d234b5fb04cbac49ac7c7df0
SHA1 hash:
d24c96bfca0d07dac703137594f61b68a4520692
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/46ea8637-d81f-4ed1-af11-b1306e79f72b/
Parent samples :
a06f961f856857eea5b506b9bbf220df937bf7778246cc72e502c451e5311621
301dc94eb5d63a0fcd4a53c6b378d5d20ae42d0e56e0a5ab584f0baa59b5c8d6
5cb84af56a24dbe7fb79678b206f3d9b6721cd7291d6294b1d5e189a1db865eb
463a99c4d82f346dd9cb1236df6c6acd9dc5f5df50467848efa167b59c635120
ed8c310c0eda6f8ec0e52a6ffa791d01dc7b46b9300db8464511cb9d49cc5fd2
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/463a99c4d82f/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/463a99c4d82f346dd9cb1236df6c6acd9dc5f5df50467848efa167b59c635120

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__GlobalFlags
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:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
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:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:Windows_Trojan_M0yv_92f66467
Create hunting rule
Author:Elastic Security
Rule name:win_m0yv_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.m0yv.

File information

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

Malspam

Worm.m0yv

Executable exe 463a99c4d82f346dd9cb1236df6c6acd9dc5f5df50467848efa167b59c635120

(this sample)

  
Delivery method
Distributed via e-mail attachment

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
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

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