MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733. 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


GuLoader


Vendor detections: 16


Intelligence 16 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733
SHA3-384 hash: ba662e0e2f4db9b1cefaaa6ab24fabfecdeb1f02934b0034acbe4d7c6c8acfb7098f5e8eab0dabe94de77d1e8f91c277
SHA1 hash: c2895c9a23882d9cb2ef731d54c3f4440e2b6556
MD5 hash: 7f5e087aacee9fd5d52ca2cb26ee0895
humanhash: romeo-bakerloo-golf-spaghetti
File name:SHIPMENT-0000876764-PDF.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:503'840 bytes
First seen:2025-07-16 00:05:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3abe302b6d9a1256e6a915429af4ffd2 (279 x GuLoader, 38 x Formbook, 25 x Loki)
ssdeep 12288:XipMcHeCVnNxKIdcZ+Bfb3bgEFJP5l0EYM67wJEhF:Xi9HRNQ+pBfbkEFJxh67KEhF
TLSH T1FFB423B5B1D8B88BD36A83723571967AE375EB810162CB4B1B87577F3C261D40F2C286
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10522/11/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon c4dadadad2f492c2 (25 x GuLoader, 14 x RemcosRAT, 7 x AgentTesla)
Reporter threatcat_ch
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Norseled
Issuer:Norseled
Algorithm:sha256WithRSAEncryption
Valid from:2024-10-12T10:13:31Z
Valid to:2026-01-15T10:13:31Z
Serial number: 49ed0fc164f509577b2b6d9e93e858b6b650aa3a
Thumbprint Algorithm:SHA256
Thumbprint: c43e1f459040315ca2862f3e0782f1db76baa48ff8cf19fa3d81148d23732d75
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
47
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
SHIPMENT-0000876764-PDF.exe
Verdict:
Malicious activity
Analysis date:
2025-07-16 00:06:36 UTC
Tags:
rat remcos remote
Link:
https://app.any.run/tasks/74444760-4af3-4e9b-9b08-8c3c4999c460

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/14714/
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6876ecef3e506f63f5a3f98e
Tags:
injection obfusc crypt
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Searching for the Windows task manager window
Launching a process
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole installer masquerade microsoft_visual_cc overlay overlay signed
Link:
https://www.filescan.io/uploads/6876ecf18a7d628a81b10e8f/reports/c05be475-8215-4d1d-b125-a1a67e2967f3/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733
Malware family:
NSIS
Create hunting rule
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/305468f2-77b2-4d12-927c-7d9bf6b9fc60
Result
Threat name:
Remcos, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1737601
Signature
AI detected suspicious PE digital signature
C2 URLs / IPs found in malware configuration
Detected Remcos RAT
Early bird code injection technique detected
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Queues an APC in another process (thread injection)
Sigma detected: Remcos
Sigma detected: Suspicious Script Execution From Temp Folder
Suricata IDS alerts for network traffic
Writes to foreign memory regions
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1737601 Sample: SHIPMENT-0000876764-PDF.exe Startdate: 16/07/2025 Architecture: WINDOWS Score: 100 40 geoplugin.net 2->40 42 drive.usercontent.google.com 2->42 44 drive.google.com 2->44 48 Suricata IDS alerts for network traffic 2->48 50 Found malware configuration 2->50 52 Multi AV Scanner detection for dropped file 2->52 54 8 other signatures 2->54 9 SHIPMENT-0000876764-PDF.exe 1 43 2->9         started        signatures3 process4 file5 24 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 9->24 dropped 26 C:\Users\user\AppData\...\Indmelderne96.sub, COM 9->26 dropped 28 C:\Users\user\AppData\...\Storkenbbene.Cha, Unicode 9->28 dropped 12 powershell.exe 30 9->12         started        process6 file7 30 C:\Users\user\...\SHIPMENT-0000876764-PDF.exe, PE32 12->30 dropped 32 SHIPMENT-000087676...exe:Zone.Identifier, ASCII 12->32 dropped 56 Early bird code injection technique detected 12->56 58 Writes to foreign memory regions 12->58 60 Found suspicious powershell code related to unpacking or dynamic code loading 12->60 62 3 other signatures 12->62 16 msiexec.exe 4 14 12->16         started        20 conhost.exe 12->20         started        signatures8 process9 dnsIp10 34 196.251.81.212, 2404, 49725 SONIC-WirelessZA Seychelles 16->34 36 drive.usercontent.google.com 172.253.63.132, 443, 49724 GOOGLEUS United States 16->36 38 2 other IPs or domains 16->38 46 Detected Remcos RAT 16->46 22 conhost.exe 16->22         started        signatures11 process12
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) Win 32 Exe x86
Link:
https://app.malva.re/file/7f5e087aacee9fd5d52ca2cb26ee0895
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2025-07-16 00:06:11 UTC
File Type:
PE (Exe)
Extracted files:
17
AV detection:
12 of 23 (52.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lcgn2kwgcz5tj2vmsgnddpyyzj4dcgb5u2y4f3gmlftibdblg4zq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:remcos botnet:remotehost collection discovery downloader execution installer rat
Link:
https://tria.ge/reports/250716-adsk2a1tbs/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Blocklisted process makes network request
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Guloader family
Guloader,Cloudeye
Remcos
Remcos family
Malware Config
C2 Extraction:
196.251.81.212:2404
Verdict:
Malicious
Tags:
loader guloader
YARA:
NSIS_GuLoader_July_2024
Link:
https://app.threat.zone/submission/19f307ca-fd69-4d8d-911e-c398c40c8ce3
Unpacked files
SH256 hash:
588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733
MD5 hash:
7f5e087aacee9fd5d52ca2cb26ee0895
SHA1 hash:
c2895c9a23882d9cb2ef731d54c3f4440e2b6556
Link:
https://www.unpac.me/results/e0c2db7a-d8f5-4ab4-bd00-6e2db4376309/
SH256 hash:
480184452f80f632d70a41d259f5c014215c9f858ced981910c363fe573cc49f
MD5 hash:
a54db25f487ef61a667174fa55d0e8d2
SHA1 hash:
d97a4065013ebaf7fd6858d2cb4ab21016c32eee
Detections:
win_flawedammyy_auto
Create hunting rule
Link:
https://www.unpac.me/results/e0c2db7a-d8f5-4ab4-bd00-6e2db4376309/
Parent samples :
63e8c18d647c49586bbea5bebed20a710bf669a3282846efbe053690e563c84b
35dab11414d17ad15b9992ba51ad57fc768fd3f4fc449d50fce08b2c46cbe270
cba8e79b90c98fe396da2d0243e1c98b13bdf586b8e60034be52fe6efdc42ce8
20343f047964ef95901941b2406ee66ec976e2d849abbe991f94b6a0fe634881
22a936860e45162049f713f1305e801899f8eb47a13fdb3504cf978a456efc16
588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733
SH256 hash:
b22c8f676dec58be8d25fbad1a37835ffc4029f29aaf79f4dc0337ca73a38782
MD5 hash:
1f49d8af9be9e915d54b2441c4a79adf
SHA1 hash:
1ee4f809c693e31f34bc6d8153664a6dc2c3e499
Detections:
win_flawedammyy_auto
Create hunting rule
Link:
https://www.unpac.me/results/e0c2db7a-d8f5-4ab4-bd00-6e2db4376309/
Parent samples :
35dab11414d17ad15b9992ba51ad57fc768fd3f4fc449d50fce08b2c46cbe270
cba8e79b90c98fe396da2d0243e1c98b13bdf586b8e60034be52fe6efdc42ce8
20343f047964ef95901941b2406ee66ec976e2d849abbe991f94b6a0fe634881
22a936860e45162049f713f1305e801899f8eb47a13fdb3504cf978a456efc16
588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733
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/588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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)

File information

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

Malspam

GuLoader

Executable exe 588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/14714/

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_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::SetFileSecurityA
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExA
SHELL32.dll::SHFileOperationA
SHELL32.dll::SHGetFileInfoA
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessA
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExA
KERNEL32.dll::GetDiskFreeSpaceA
KERNEL32.dll::GetCommandLineA
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileA
KERNEL32.dll::CreateDirectoryA
KERNEL32.dll::CreateFileA
KERNEL32.dll::DeleteFileA
KERNEL32.dll::MoveFileExA
KERNEL32.dll::MoveFileA
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueA
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExA
ADVAPI32.dll::RegDeleteKeyA
ADVAPI32.dll::RegOpenKeyExA
ADVAPI32.dll::RegQueryValueExA
ADVAPI32.dll::RegSetValueExA
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuA
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExA
USER32.dll::OpenClipboard
USER32.dll::PeekMessageA
USER32.dll::CreateWindowExA

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