MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 46ccb3436fbd93182c0196510c4b8451e539560d2d68e1338db7720676e0b637. 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: 13


Intelligence 13 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 46ccb3436fbd93182c0196510c4b8451e539560d2d68e1338db7720676e0b637
SHA3-384 hash: a568c1f7c3b0ed24748b3661fabd477f44d012e7cee61f9c7c89dec7530ae35f00bb6738733161d9b9828b6ea5205de0
SHA1 hash: 59d757ac2f00110c674cba53cdec00bba551b31f
MD5 hash: 3b79e70738ecf345b76c480871eae21a
humanhash: cat-leopard-bacon-happy
File name:zamowienie_002523.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:795'541 bytes
First seen:2024-04-15 08:16:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 076b06e6a65c9b7cca5a61be0cd82165 (51 x GuLoader, 4 x AgentTesla, 4 x Formbook)
ssdeep 12288:TOyBItc6cCKcKub6fD0GPlZY9urv+Uw/8zXIn1Z7OuintP2iYZ367TCIhhDu:5W2zaKuk1PCuCrUzInOnCyh
TLSH T1E2051250EA88944FC852687049ABFF38F2ECAF133E02CD6767563F6FAD3C549950A502
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)
Reporter Anonymous
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
367
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
46ccb3436fbd93182c0196510c4b8451e539560d2d68e1338db7720676e0b637.exe
Verdict:
Malicious activity
Analysis date:
2024-04-15 08:18:30 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/f849702b-410f-402d-bde1-b316f1296f0d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Searching for the window
Searching for the Windows task manager window
Launching a process
Creating a process with a hidden window
Running batch commands
Using the Windows Management Instrumentation requests
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
installer
Link:
https://www.filescan.io/uploads/661ce28708ebdfcacd062aad/reports/d06f9fd0-4136-4c51-b72d-25c64fd36b6b/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/46ccb3436fbd93182c0196510c4b8451e539560d2d68e1338db7720676e0b637
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ed9e2522-5805-4914-bcd0-3304960818f2
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1426020
Signature
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Found suspicious powershell code related to unpacking or dynamic code loading
Machine Learning detection for dropped file
Machine Learning detection for sample
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Performs DNS queries to domains with low reputation
Powershell drops PE file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Suspicious powershell command line found
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: 1426020 Sample: zamowienie_002523.exe Startdate: 15/04/2024 Architecture: WINDOWS Score: 100 55 www.eternalsunrise.xyz 2->55 57 www.n-benriya002.com 2->57 59 5 other IPs or domains 2->59 85 Malicious sample detected (through community Yara rule) 2->85 87 Antivirus detection for URL or domain 2->87 89 Multi AV Scanner detection for submitted file 2->89 93 3 other signatures 2->93 11 zamowienie_002523.exe 3 141 2->11         started        signatures3 91 Performs DNS queries to domains with low reputation 55->91 process4 file5 45 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 11->45 dropped 47 C:\Users\user\AppData\Local\...\UserInfo.dll, PE32 11->47 dropped 49 C:\Users\user\AppData\Local\...\AdvSplash.dll, PE32 11->49 dropped 51 C:\Users\user\AppData\...\Tistykspakker83.Ach, ASCII 11->51 dropped 105 Suspicious powershell command line found 11->105 15 powershell.exe 20 11->15         started        signatures6 process7 file8 53 C:\Users\user\AppData\Local\...\Reshrine.exe, PE32 15->53 dropped 69 Obfuscated command line found 15->69 71 Writes to foreign memory regions 15->71 73 Sample uses process hollowing technique 15->73 75 2 other signatures 15->75 19 Reshrine.exe 2 7 15->19         started        23 conhost.exe 15->23         started        25 cmd.exe 1 15->25         started        signatures9 process10 dnsIp11 61 103.14.155.180, 49736, 80 EASYHOST-HKEASYHOSTSOLUTIONLIMITEDHK unknown 19->61 95 Multi AV Scanner detection for dropped file 19->95 97 Machine Learning detection for dropped file 19->97 99 Maps a DLL or memory area into another process 19->99 27 VKgDYZZWKPV.exe 19->27 injected 30 cmd.exe 1 19->30         started        signatures12 process13 signatures14 103 Found direct / indirect Syscall (likely to bypass EDR) 27->103 32 cmd.exe 13 27->32         started        35 conhost.exe 30->35         started        37 reg.exe 1 1 30->37         started        process15 signatures16 77 Tries to steal Mail credentials (via file / registry access) 32->77 79 Tries to harvest and steal browser information (history, passwords, etc) 32->79 81 Modifies the context of a thread in another process (thread injection) 32->81 83 2 other signatures 32->83 39 VKgDYZZWKPV.exe 32->39 injected 43 firefox.exe 32->43         started        process17 dnsIp18 63 www.eternalsunrise.xyz 66.29.135.159, 49751, 49752, 49753 ADVANTAGECOMUS United States 39->63 65 n-benriya002.com 219.94.128.41, 49743, 49744, 49745 SAKURA-CSAKURAInternetIncJP Japan 39->65 67 3 other IPs or domains 39->67 101 Found direct / indirect Syscall (likely to bypass EDR) 39->101 signatures19
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/46ccb3436fbd93182c0196510c4b8451e539560d2d68e1338db7720676e0b637
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/46ccb3436fbd93182c0196510c4b8451e539560d2d68e1338db7720676e0b637/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2024-04-15 05:31:58 UTC
File Type:
PE (Exe)
Extracted files:
96
AV detection:
11 of 23 (47.83%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=i3glgq3pxwjrqlabsziqys4ekhstsvqnfvuocm4nw5zam5xawy3q._file
Verdict:
unknown
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240415-j6pvaaab79/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Loads dropped DLL
Unpacked files
SH256 hash:
1c2f19e57dc72587aa00800a498c5f581b7d6761dc13b24bcf287ea7bd5ca2bf
MD5 hash:
3eb4cd50dcb9f5981f5408578cb7fb70
SHA1 hash:
13b38cc104ba6ee22dc4dfa6e480e36587f4bc71
Detections:
win_flawedammyy_auto
Create hunting rule
Link:
https://www.unpac.me/results/603b2885-397a-411c-ad6a-d4a7dddca8dd/
Parent samples :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 hash:
f4b7bd6ffc472858b786635fc3d2c053025c6ef8e121894785a2f997ad76e16b
MD5 hash:
a5fd5bb479150881ed350f9fa758bb15
SHA1 hash:
ffa55bb6a77fca54eccfc1badc872ebde69b67be
Link:
https://www.unpac.me/results/603b2885-397a-411c-ad6a-d4a7dddca8dd/
SH256 hash:
b665b4fd4c9de7a4ee54c720f5b607ca0744c9c69990a741428b469388862f29
MD5 hash:
5cf209df87b3c5e455b5b2b326438ad9
SHA1 hash:
47e8dc726c0a49c0b53a1fba4e03af4bccda003a
Link:
https://www.unpac.me/results/603b2885-397a-411c-ad6a-d4a7dddca8dd/
SH256 hash:
ea60f14cbd764de7259f8f5a8f64093c8a4940c46a1a5153b6f42fe019a2297c
MD5 hash:
efec1affbb89c110ad32aa350437f5d7
SHA1 hash:
1dc7bf27ad34dc73813e27cbd63d5853fa196edf
Detections:
win_flawedammyy_auto
Create hunting rule
Link:
https://www.unpac.me/results/603b2885-397a-411c-ad6a-d4a7dddca8dd/
Parent samples :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 hash:
46ccb3436fbd93182c0196510c4b8451e539560d2d68e1338db7720676e0b637
MD5 hash:
3b79e70738ecf345b76c480871eae21a
SHA1 hash:
59d757ac2f00110c674cba53cdec00bba551b31f
Link:
https://www.unpac.me/results/603b2885-397a-411c-ad6a-d4a7dddca8dd/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/46ccb3436fbd/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/46ccb3436fbd93182c0196510c4b8451e539560d2d68e1338db7720676e0b637

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

File information

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

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::LoadLibraryA
KERNEL32.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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