MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 541a56f2c929017c9400b550440fd0b8c8c2992a707a80e66292672de4d4e151. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 541a56f2c929017c9400b550440fd0b8c8c2992a707a80e66292672de4d4e151
SHA3-384 hash: 11aaf945729ad35879d7fbd47ca6dc1705cc7ec017d2bb0c9cad0a21b425f75346d7b6ea20e55653895e57f7971ced39
SHA1 hash: 023df5ab3410fe35074bdc59c6305361370d0d5b
MD5 hash: 7dfc8f73be4fdd80f642006d7eaf5616
humanhash: lemon-gee-stream-edward
File name:Aalende.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:599'432 bytes
First seen:2023-08-16 13:31:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d4b94e8ee3f620a89d114b9da4b31873 (90 x GuLoader, 18 x njrat, 9 x RemcosRAT)
ssdeep 12288:xBXPB4M7oZQZPjYfRdP3qPUfW96VLnKrhpaMqEmOxx:p4M7TCzP3RflVLEmMqyxx
Threatray 1'698 similar samples on MalwareBazaar
TLSH T104D412C03D60DF2AEF42BE317566C2AA5BE46D2C0D0435473B4EF7ED2A71A0316EA255
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) (4505/5/1)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-12-07T09:22:52Z
Valid to:2025-12-06T09:22:52Z
Serial number: 08f172a946152b546a4847d2bd785edc11a6a40f
Thumbprint Algorithm:SHA256
Thumbprint: b75c8304382135214e6849091fb709826bd8fa0a8647efbede12021e5321383b
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
274
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Aalende.exe
Verdict:
Suspicious activity
Analysis date:
2023-08-16 13:32:33 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/ee4da0e3-5064-4d3e-83ed-cb03603240d9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/443051/
Detection(s):
SecuriteInfo.com.FileRepMalware.19485.22046.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file
Delayed reading of the file
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/102985/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/64dccfd29a7e04b475d0491e/reports/847337ac-d427-4497-a60a-dc2350255775/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/541a56f2c929017c9400b550440fd0b8c8c2992a707a80e66292672de4d4e151
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:
Unknown
Link:
https://analyze.intezer.com/analyses/411a0345-6b3f-42d0-b3b7-8215cc824239
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1292159
Signature
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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: 1292159 Sample: Aalende.exe Startdate: 16/08/2023 Architecture: WINDOWS Score: 100 34 www.weinbrenner-stiftung.org 2->34 36 www.vusujhyf.click 2->36 38 22 other IPs or domains 2->38 52 Snort IDS alert for network traffic 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 Antivirus detection for URL or domain 2->56 58 5 other signatures 2->58 10 Aalende.exe 31 2->10         started        signatures3 process4 file5 32 C:\Users\user\AppData\Local\...\System.dll, PE32 10->32 dropped 68 Tries to detect Any.run 10->68 14 Aalende.exe 6 10->14         started        signatures6 process7 dnsIp8 46 drive.google.com 142.250.184.238, 443, 49772 GOOGLEUS United States 14->46 48 googlehosted.l.googleusercontent.com 142.250.185.65, 443, 49773 GOOGLEUS United States 14->48 72 Modifies the context of a thread in another process (thread injection) 14->72 74 Tries to detect Any.run 14->74 76 Maps a DLL or memory area into another process 14->76 78 Queues an APC in another process (thread injection) 14->78 18 RAVCpl64.exe 14->18 injected signatures9 process10 signatures11 50 Sample uses process hollowing technique 18->50 21 msiexec.exe 13 18->21         started        24 autofmt.exe 18->24         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 Writes to foreign memory regions 21->64 66 3 other signatures 21->66 26 explorer.exe 2 1 21->26 injected 30 firefox.exe 21->30         started        process14 dnsIp15 40 triplemshipssupplies.com 173.254.104.74, 49805, 49806, 49807 UNIFIEDLAYER-AS-1US United States 26->40 42 www.595qdd.top 91.195.240.123, 49781, 49782, 49783 SEDO-ASDE Germany 26->42 44 12 other IPs or domains 26->44 70 System process connects to network (likely due to code injection or exploit) 26->70 signatures16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/541a56f2c929017c9400b550440fd0b8c8c2992a707a80e66292672de4d4e151/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-08-16 10:25:44 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
18 of 38 (47.37%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kqnfn4wjfeaxzfaawvieid6qxdemfgjkob5ibztcsjts3zgu4fiq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
2e1ac1d041b43d2a42fde84341e9c2f048ff77d6ce0ffb6b2faf072ee60978a9
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2f19bd5bfb2adbefdfe7237239415513183d3503e433ad08223197fc9af0dc8e
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3e924b372c019c41e9995a276ce5c1b1487d14ceb9fbc8d606a09a83df5989b8
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74c460852f392fbdd2ef8d83d9461371228d37fba88a6431fd205ee20bccf622
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7a55e4b3f800275bc0f7c00cd337d0dd83379ef845fce3fa55b86d68092c1b9c
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b1ce73dac896a841321b1f502bcc32313de930cd0e5561874e51e80dc7cb06cc
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c0303022c1e2e014df91a6ff93d540d2e734a938f93e16649941c418d54e5a62
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c912574d97fc69697687cc5f38f0d6ca750c58a11227f442fde822160240534c
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d206ccc4397de8003b4770d67ea8315e4d997f519c694b0d1f0a59451389277d
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f4716cf29a2fa3ff5650ff6a4d35a26a5a534658fe7518fdf2c08554158db841
GuLoader
+ 1'688 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/230816-qsewgsch81/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
MD5 hash:
ee260c45e97b62a5e42f17460d406068
SHA1 hash:
df35f6300a03c4d3d3bd69752574426296b78695
Link:
https://www.unpac.me/results/8a12af1c-c7f5-4b25-9468-d50f75075973/
SH256 hash:
541a56f2c929017c9400b550440fd0b8c8c2992a707a80e66292672de4d4e151
MD5 hash:
7dfc8f73be4fdd80f642006d7eaf5616
SHA1 hash:
023df5ab3410fe35074bdc59c6305361370d0d5b
Link:
https://www.unpac.me/results/8a12af1c-c7f5-4b25-9468-d50f75075973/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/541a56f2c929/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/541a56f2c929017c9400b550440fd0b8c8c2992a707a80e66292672de4d4e151

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

File information

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

Malspam

GuLoader

Executable exe 541a56f2c929017c9400b550440fd0b8c8c2992a707a80e66292672de4d4e151

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/443051/

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