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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 277200c6bfd16664e85f85ceef4cd48e79bca8ede1a3d1d28340b8ee2adf76ee. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 277200c6bfd16664e85f85ceef4cd48e79bca8ede1a3d1d28340b8ee2adf76ee
SHA3-384 hash: f98050193b7e99a00ab7b0c9488336c38775ad482f8ff81b03420b85af68de3a9ebdbf7333757f745075278b66e10b94
SHA1 hash: f9b86020f14cc453151235fcac56cd4f856e93a1
MD5 hash: 1544fc06a3fdcfc51236d2751f8249ff
humanhash: zulu-angel-september-wisconsin
File name:requirements.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:606'080 bytes
First seen:2025-04-23 11:48:47 UTC
Last seen:2025-04-30 07:55:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 573bb7b41bc641bd95c0f5eec13c233b (66 x GuLoader, 32 x AgentTesla, 31 x RemcosRAT)
ssdeep 12288:uTAzyVz0jBCCWyq+OTjKK025NxKda5ATJk9jK1mAm2x5kbFCMr0LL9sXAWhH:uTAzyVz0LYjKK04KU5ATiymAm4uD0L
TLSH T129D42391C7C048C7E5A206720936BE466EE7ED2E50B46F9B2E3937507DB22C7542AC4F
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 cdcd2301112589cd (1 x GuLoader)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Kikkerternes
Issuer:Kikkerternes
Algorithm:sha256WithRSAEncryption
Valid from:2025-04-14T02:42:38Z
Valid to:2026-04-14T02:42:38Z
Serial number: 168392d48899995e2dbc5a4982f2f431b121ed3f
Thumbprint Algorithm:SHA256
Thumbprint: aaf569e1df15d2dc89e3dbdb022cf2bf0e16d14393670b9a1bf8ad15da8953cf
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
421
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
requirements.exe
Verdict:
Malicious activity
Analysis date:
2025-04-23 12:13:53 UTC
Tags:
rat remcos remote auto-reg
Link:
https://app.any.run/tasks/567db43e-412f-4b46-bbf5-14274b59952a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/3675/
Detection(s):
SecuriteInfo.com.Win32.Evo-gen.2915.26480.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6808d5eba37ff28e12988dc5
Tags:
injector uloader virus nsis
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a file in the %temp% directory
Delayed reading of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
adaptive-context blackhole installer microsoft_visual_cc overlay packed signed
Link:
https://www.filescan.io/uploads/6808d3c728dca5b2ef21239f/reports/cef7de46-bfaf-4510-ac9a-384659b1a117/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/277200c6bfd16664e85f85ceef4cd48e79bca8ede1a3d1d28340b8ee2adf76ee
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/24fb9738-7d18-4ea6-ae60-338b7bb47afd
Result
Threat name:
Remcos, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1672005
Signature
AI detected suspicious PE digital signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected Remcos RAT
Found malware configuration
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/277200c6bfd16664e85f85ceef4cd48e79bca8ede1a3d1d28340b8ee2adf76ee
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/277200c6bfd16664e85f85ceef4cd48e79bca8ede1a3d1d28340b8ee2adf76ee/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-04-20 02:42:51 UTC
File Type:
PE (Exe)
Extracted files:
22
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=e5zabrv72ftgj2c7qxho6tgurz43zkhn4gr5duudic4o4kw7o3xa._file
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader collection defense_evasion discovery downloader persistence trojan upx
Link:
https://tria.ge/reports/250423-ny66tawzfz/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
UPX packed file
Accesses Microsoft Outlook accounts
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Guloader family
Guloader,Cloudeye
UAC bypass
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/60c589aa-1b14-4f84-9dd7-f42eecd75792
Unpacked files
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
Link:
https://www.unpac.me/results/938801a6-3824-47e0-abc0-5e4329557bd7/
SH256 hash:
277200c6bfd16664e85f85ceef4cd48e79bca8ede1a3d1d28340b8ee2adf76ee
MD5 hash:
1544fc06a3fdcfc51236d2751f8249ff
SHA1 hash:
f9b86020f14cc453151235fcac56cd4f856e93a1
Link:
https://www.unpac.me/results/938801a6-3824-47e0-abc0-5e4329557bd7/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/277200c6bfd1/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/277200c6bfd16664e85f85ceef4cd48e79bca8ede1a3d1d28340b8ee2adf76ee

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: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 277200c6bfd16664e85f85ceef4cd48e79bca8ede1a3d1d28340b8ee2adf76ee

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/3675/

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
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDiskFreeSpaceW
KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::OpenClipboard
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

Comments