MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5663a58153d79aeb1ed3cfcc7f87bddaa1952dfe536507eb95c0920b484742e. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c5663a58153d79aeb1ed3cfcc7f87bddaa1952dfe536507eb95c0920b484742e
SHA3-384 hash: f28ecc9a536f6e86b42fda927ac66c141f840e870a062b9cd1c337eb39ddf662d7a4b5b731d3e69734904556298fd503
SHA1 hash: 1db1fa1bdb5b6827522a09a2c368d15681fc5d66
MD5 hash: 8e27b488a1e9ba920c1e7427ad51a5e9
humanhash: emma-angel-seventeen-oranges
File name:8e27b488a1e9ba920c1e7427ad51a5e9
Download: download sample
Signature GuLoader
Create hunting rule
File size:546'964 bytes
First seen:2024-03-21 17:43:02 UTC
Last seen:2024-03-21 19:47:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (295 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 12288:47Y6YuDReX/2G28jR0vUrosU5iUXIIQkAsg:486YyReZjKvyU5fYIQkU
TLSH T148C4F1152FE4C832F3509474B261D62E8DB5E9141A2E8F03ABF53E6D76FC7A2684D243
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
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)
File icon (PE):PE icon
dhash icon cce0f6e2c2f21a80 (1 x Formbook, 1 x GuLoader)
Reporter zbetcheckin
Tags:32 exe GuLoader

Intelligence

File Origin
# of uploads :
2
# of downloads :
340
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
c5663a58153d79aeb1ed3cfcc7f87bddaa1952dfe536507eb95c0920b484742e.exe
Verdict:
Malicious activity
Analysis date:
2024-03-21 18:13:57 UTC
Tags:
guloader
Link:
https://app.any.run/tasks/b6ebfdd9-8f61-411d-8407-8c078418f0de

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BackDoor.Siggen2.2488.26461.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file
Creating a file in the %temp% directory
Delayed reading of the file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/65fc71af87137159d44d936e/reports/c2cd7fd7-11d5-4995-8a80-73123e46b911/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/c5663a58153d79aeb1ed3cfcc7f87bddaa1952dfe536507eb95c0920b484742e
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/19aec031-8323-47bb-a15c-f2089b585b68
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1413459
Signature
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
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
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1413459 Sample: Sf5Aw7E8Cu.exe Startdate: 21/03/2024 Architecture: WINDOWS Score: 100 31 www.eh28mf3cdv.xyz 2->31 33 zopter.dev 2->33 35 31 other IPs or domains 2->35 49 Snort IDS alert for network traffic 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for URL or domain 2->53 57 4 other signatures 2->57 10 Sf5Aw7E8Cu.exe 2 31 2->10         started        signatures3 55 Performs DNS queries to domains with low reputation 31->55 process4 file5 29 C:\Users\user\AppData\Local\...\System.dll, PE32 10->29 dropped 13 Sf5Aw7E8Cu.exe 6 10->13         started        process6 dnsIp7 43 drive.usercontent.google.com 142.250.176.193, 443, 50206 GOOGLEUS United States 13->43 45 drive.google.com 142.250.65.238, 443, 50205 GOOGLEUS United States 13->45 69 Maps a DLL or memory area into another process 13->69 17 sStiYubEcMKr.exe 13->17 injected signatures8 process9 signatures10 47 Found direct / indirect Syscall (likely to bypass EDR) 17->47 20 finger.exe 13 17->20         started        process11 signatures12 59 Tries to steal Mail credentials (via file / registry access) 20->59 61 Tries to harvest and steal browser information (history, passwords, etc) 20->61 63 Writes to foreign memory regions 20->63 65 3 other signatures 20->65 23 sStiYubEcMKr.exe 20->23 injected 27 firefox.exe 20->27         started        process13 dnsIp14 37 www.deniztemiz.fun 46.28.105.2, 50232, 50233, 50235 WEDOSCZ Czech Republic 23->37 39 xiaoyue.zhuangkou.com 47.76.88.64, 50208, 50209, 50210 VODAFONE-TRANSIT-ASVodafoneNZLtdNZ United States 23->39 41 14 other IPs or domains 23->41 67 Found direct / indirect Syscall (likely to bypass EDR) 23->67 signatures15
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c5663a58153d79aeb1ed3cfcc7f87bddaa1952dfe536507eb95c0920b484742e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c5663a58153d79aeb1ed3cfcc7f87bddaa1952dfe536507eb95c0920b484742e/
Threat name:
Win32.Trojan.InjectorX
Create hunting rule
Status:
Malicious
First seen:
2024-03-21 11:13:08 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
5 of 38 (13.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yvtduwavhv425mpnht6mp6d33wvbsuw74u3fa7vzlqesbneeoqxa._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240321-waka5sdf39/
Behaviour
Enumerates physical storage devices
Loads dropped DLL
Unpacked files
SH256 hash:
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 hash:
3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 hash:
fe582246792774c2c9dd15639ffa0aca90d6fd0b
Link:
https://www.unpac.me/results/c1799120-ba25-4f18-af7f-7781d770628d/
SH256 hash:
c5663a58153d79aeb1ed3cfcc7f87bddaa1952dfe536507eb95c0920b484742e
MD5 hash:
8e27b488a1e9ba920c1e7427ad51a5e9
SHA1 hash:
1db1fa1bdb5b6827522a09a2c368d15681fc5d66
Link:
https://www.unpac.me/results/c1799120-ba25-4f18-af7f-7781d770628d/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c5663a58153d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
GuLoader
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/c5663a58153d79aeb1ed3cfcc7f87bddaa1952dfe536507eb95c0920b484742e

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:Detect_SliverFox_String
Create hunting rule
Author:huoji
Description:Detect files is `SliverFox` malware
Rule name:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader

File information

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

Web download

GuLoader

Executable exe c5663a58153d79aeb1ed3cfcc7f87bddaa1952dfe536507eb95c0920b484742e

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2789071/

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
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::ShellExecuteA
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

Comments


Avatar
zbet commented on 2024-03-21 17:43:03 UTC

url : hxxp://103.237.87.56/setup/bin.exe