MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e1dc693a5e55a541b2db24ed4bcfadb0a5047128ade9f42fdd4f1be2c428a19b. 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: 12


Intelligence 12 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e1dc693a5e55a541b2db24ed4bcfadb0a5047128ade9f42fdd4f1be2c428a19b
SHA3-384 hash: 92fe01f95c7172394c40eb0bed674075b0b8f16418f8517fcb30cd8087f5132cc0c061b57fb4d763e412e3bafa1aa365
SHA1 hash: bc79bb7cc3f63681c35e6779260ebf025372e429
MD5 hash: 936daa54a6dddd6f59d83e5c150a3b8f
humanhash: maine-echo-island-rugby
File name:rBilateralt.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:727'568 bytes
First seen:2024-10-16 15:30:10 UTC
Last seen:2024-10-22 14:02:36 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 671f2a1f8aee14d336bab98fea93d734 (199 x GuLoader, 4 x Formbook, 4 x RemcosRAT)
ssdeep 12288:mrgjBLiIK2WVy/Yqpuz/oU927aQmm7xR2ugcYMsOffhXmmwMRzcLSIHw:m0jBiIK2R/5puz/r927aTmrn8OBXjZcK
TLSH T18EF4235016F9D837D16126F10969877B9C7CEE683163A38B7FA60E9A7C35B811C3824E
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
Reporter FXOLabs
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Jalousie
Issuer:Jalousie
Algorithm:sha256WithRSAEncryption
Valid from:2024-09-06T05:25:00Z
Valid to:2027-09-06T05:25:00Z
Serial number: 474b393bc42126408ef756bd0e3233ef493e90a8
Thumbprint Algorithm:SHA256
Thumbprint: 6bc8c300348c75e2a52d26970a8606a04bb230563fd0b05fd72fa870294187cb
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
3
# of downloads :
424
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rBilateralt.exe
Verdict:
Suspicious activity
Analysis date:
2024-10-16 15:31:13 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a540921e-f711-4ec1-b563-e47ef8a634a5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.8014.10798.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=670fdc381d4ef219fa63643a
Tags:
Injection Exploit Obfusc
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
installer lolbin microsoft_visual_cc overlay packed remote shell32 signed
Link:
https://www.filescan.io/uploads/670fdc38a46b70beae92bbd5/reports/446cbdaa-995c-4750-bc3c-3388e4e38a73/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/e1dc693a5e55a541b2db24ed4bcfadb0a5047128ade9f42fdd4f1be2c428a19b
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/3b7ade78-2b78-4936-891e-768e5ed40e7d
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1535192
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Found direct / indirect Syscall (likely to bypass EDR)
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Performs DNS queries to domains with low reputation
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 virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1535192 Sample: rBilateralt.exe Startdate: 16/10/2024 Architecture: WINDOWS Score: 100 32 www.golizle22.xyz 2->32 34 www.visualbrain.net 2->34 36 5 other IPs or domains 2->36 50 Suricata IDS alerts for network traffic 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 Antivirus / Scanner detection for submitted sample 2->54 58 3 other signatures 2->58 10 rBilateralt.exe 31 2->10         started        signatures3 56 Performs DNS queries to domains with low reputation 32->56 process4 file5 30 C:\Users\user\AppData\Local\...\System.dll, PE32 10->30 dropped 70 Tries to detect virtualization through RDTSC time measurements 10->70 72 Switches to a custom stack to bypass stack traces 10->72 14 rBilateralt.exe 6 10->14         started        signatures6 process7 dnsIp8 44 drive.usercontent.google.com 142.250.186.33, 443, 49714 GOOGLEUS United States 14->44 46 drive.google.com 172.217.16.142, 443, 49712 GOOGLEUS United States 14->46 74 Maps a DLL or memory area into another process 14->74 18 svuqHiXuPMcRV.exe 14->18 injected signatures9 process10 signatures11 48 Found direct / indirect Syscall (likely to bypass EDR) 18->48 21 label.exe 13 18->21         started        process12 signatures13 60 Tries to steal Mail credentials (via file / registry access) 21->60 62 Tries to harvest and steal browser information (history, passwords, etc) 21->62 64 Modifies the context of a thread in another process (thread injection) 21->64 66 3 other signatures 21->66 24 svuqHiXuPMcRV.exe 21->24 injected 28 firefox.exe 21->28         started        process14 dnsIp15 38 www.visualbrain.net 66.81.203.135, 49989, 49990, 49991 CONFLUENCE-NETWORK-INCVG Virgin Islands (BRITISH) 24->38 40 www.golizle22.xyz 104.21.5.125, 49980, 80 CLOUDFLARENETUS United States 24->40 42 2 other IPs or domains 24->42 68 Found direct / indirect Syscall (likely to bypass EDR) 24->68 signatures16
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/e1dc693a5e55a541b2db24ed4bcfadb0a5047128ade9f42fdd4f1be2c428a19b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e1dc693a5e55a541b2db24ed4bcfadb0a5047128ade9f42fdd4f1be2c428a19b/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4hogsos6kwsudmw3etwuxt5nwcsqi4jivxu7il65j4n6frbiugnq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
error
GuLoader
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader discovery downloader
Link:
https://tria.ge/reports/241016-sx2xxs1cjm/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
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
Loads dropped DLL
Guloader,Cloudeye
Verdict:
Malicious
Tags:
loader guloader
YARA:
NSIS_GuLoader_July_2024
Link:
https://app.threat.zone/submission/4f53c149-c386-462e-b603-373806512aa0
Unpacked files
SH256 hash:
7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1
MD5 hash:
dd87a973e01c5d9f8e0fcc81a0af7c7a
SHA1 hash:
c9206ced48d1e5bc648b1d0f54cccc18bf643a14
Link:
https://www.unpac.me/results/daead074-1ab3-4d93-a570-f7beb011dd74/
SH256 hash:
e1dc693a5e55a541b2db24ed4bcfadb0a5047128ade9f42fdd4f1be2c428a19b
MD5 hash:
936daa54a6dddd6f59d83e5c150a3b8f
SHA1 hash:
bc79bb7cc3f63681c35e6779260ebf025372e429
Link:
https://www.unpac.me/results/daead074-1ab3-4d93-a570-f7beb011dd74/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e1dc693a5e55/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/e1dc693a5e55a541b2db24ed4bcfadb0a5047128ade9f42fdd4f1be2c428a19b

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:NSIS_GuLoader
Create hunting rule
Author:NDA0E
Description:Detects GuLoader using NSIS
Rule name:NSIS_GuLoader_July_2024
Create hunting rule
Author:NDA0E
Description:Detects GuLoader packed with NSIS installer
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

Malspam

GuLoader

Executable exe e1dc693a5e55a541b2db24ed4bcfadb0a5047128ade9f42fdd4f1be2c428a19b

(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_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::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::MoveFileA
KERNEL32.dll::MoveFileExA
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

Comments