MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35
SHA3-384 hash: d7f4104a709f1812bfe6f9e803e6661202fe507e87cccc8d79bb979699795ea015b980335a992382ead161c49b2a56d6
SHA1 hash: 4c3e846fe594e7e10f5ed4f0d0a13de7290b4077
MD5 hash: 632bb0a566efd66ed7fdb905ea8c9803
humanhash: michigan-bulldog-king-golf
File name:Produccion.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:804'340 bytes
First seen:2024-10-24 07:22:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7192d3773f389d45ebac3cc67d054a8a (37 x GuLoader, 8 x RemcosRAT, 7 x VIPKeylogger)
ssdeep 12288:XDGxeWd8KhML5xEfN5JPafaM8czPA2f1gLd1U0jgaTeiZdHawb:W3ddhMLTElzPYaMtzP/9gLdO0VTnH
Threatray 488 similar samples on MalwareBazaar
TLSH T1590502C1E590EDC6ED7A09B21C39BE7102177CBF68384A1DB6AF762C8177213542B51B
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
File icon (PE):PE icon
dhash icon d8baaac4d4c4c4cc (1 x GuLoader, 1 x VIPKeylogger)
Reporter lowmal3
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
364
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Produccion.exe
Verdict:
Malicious activity
Analysis date:
2024-10-24 07:30:51 UTC
Tags:
evasion snake keylogger telegram
Link:
https://app.any.run/tasks/f8c3bd63-9e36-47c9-a2ef-b2d3d5c4baf3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6719f5d8536ff0d0e408e1ae
Tags:
Injection Exploit Obfusc
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin microsoft_visual_cc overlay packed packed packer_detected shell32
Link:
https://www.filescan.io/uploads/6719f5d70f780125dba1b0d5/reports/b1d4ce0c-f389-4b65-983f-88f7be2fb147/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35
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:
NSIS
Create hunting rule
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/c19190fd-1402-4fa8-891c-ee2f13cbc77e
Result
Threat name:
GuLoader, Snake Keylogger
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1540871
Signature
AI detected suspicious sample
Found malware configuration
Switches to a custom stack to bypass stack traces
Tries to detect the country of the analysis system (by using the IP)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses the Telegram API (likely for C&C communication)
Yara detected GuLoader
Yara detected Snake Keylogger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35/
Threat name:
Win32.Spyware.Snakekeylogger
Create hunting rule
Status:
Malicious
First seen:
2024-10-24 00:12:30 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
19 of 24 (79.17%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w566b64fltmfsz4p2hiw4a5pgekm32nt6brw2d5xxftu5lqu7u2q._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
012cdac9c7fabd82e1be72dcacb79bd73fabdef7bd148f4f1035943e5882270b
GuLoader
1188c2e2766503be31ababf831f71bb23bb0edb0f1b0d00b65d9ba62eced2f25
GuLoader
55beb416633c883379bf87ea17c16fd389ef84e9c1b0b469df01fc2e5742f3c4
GuLoader
7568630cd7cff7c99567be892986482a9f3fe5a41d03f504cf447b831e999046
GuLoader
79aa5f69b486697f3a0b8b95ae06a7f57622d661fbf9bc458f6746b1826144e8
GuLoader
error
GuLoader
+ 478 additional samples on MalwareBazaar
Result
Malware family:
vipkeylogger
Create hunting rule
Score:
  10/10
Tags:
family:vipkeylogger discovery keylogger stealer
Link:
https://tria.ge/reports/241024-h7a7vaycqh/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Loads dropped DLL
VIPKeylogger
Malware Config
C2 Extraction:
https://api.telegram.org/bot7902160942:AAGa4NniMhqzlNHvfBDtJeHrHFJi_wqVTDY/sendMessage?chat_id=7698865320
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/f336d71c-0a4b-410f-8c5c-8b82d2495b0c
Unpacked files
SH256 hash:
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
MD5 hash:
ee260c45e97b62a5e42f17460d406068
SHA1 hash:
df35f6300a03c4d3d3bd69752574426296b78695
Link:
https://www.unpac.me/results/77da7557-81b5-440f-b677-06d6f792c3ba/
SH256 hash:
b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35
MD5 hash:
632bb0a566efd66ed7fdb905ea8c9803
SHA1 hash:
4c3e846fe594e7e10f5ed4f0d0a13de7290b4077
Link:
https://www.unpac.me/results/77da7557-81b5-440f-b677-06d6f792c3ba/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b77de0fb855c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

Malspam

GuLoader

Executable exe b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35

(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
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::SetFileSecurityW
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteW
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::LoadLibraryW
KERNEL32.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

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