MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d27e8bd86eba4c9e7ffe5d6116d43fe73c3ff4656dbbd4f63a813d68da755d49. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d27e8bd86eba4c9e7ffe5d6116d43fe73c3ff4656dbbd4f63a813d68da755d49
SHA3-384 hash: 1c02302ff876d94a3591b0caa2a5db014904acbbde651ff68cfd0ebba53862c5f3594a22fd5ec6b36a6f7b8cb618a980
SHA1 hash: 41b5bd7a367124f3ab328b2573cafe90a8b0a890
MD5 hash: 92f84d78f6cadd60deef7a08630cafcd
humanhash: wolfram-oregon-iowa-golf
File name:Scan_20230814_192419.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:484'640 bytes
First seen:2023-08-14 13:01:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3abe302b6d9a1256e6a915429af4ffd2 (271 x GuLoader, 38 x Formbook, 25 x Loki)
ssdeep 6144:ZwgPZVheNA+ff00vtguUw2vSVFechD0j+OHvVi9YNSYQUsxOBDyTleLJ8R7Ff:lnhe2e1viP4e+DcJgYVeONyRGS7V
Threatray 1'575 similar samples on MalwareBazaar
TLSH T1E4A48CA239C9356FDC2F4674035FEAB22A796CD0739248AE4F40761D4C35A4A80EEDD7
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)
File icon (PE):PE icon
dhash icon c88604b919c6c6c0 (77 x GuLoader, 10 x Formbook, 8 x AgentTesla)
Reporter Anonymous
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-05-22T23:46:30Z
Valid to:2026-05-21T23:46:30Z
Serial number: 294732160f6f9852c23933b59c1716f7d6160fd6
Thumbprint Algorithm:SHA256
Thumbprint: f7cd27561926d98164209da74925035f7d2afa8e534e11e4d2529cc7f022d1ca
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
290
Origin country :
US US
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
Scan_20230814_192419.rar
Verdict:
Malicious activity
Analysis date:
2023-08-14 13:01:50 UTC
Tags:
guloader
Link:
https://app.any.run/tasks/51e66029-522a-4f23-a2ca-7d23da36c24d

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/442651/
Detection(s):
SecuriteInfo.com.Adware.Downware.19579.26308.2454.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Delayed reading of the file
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/102841/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/64da25cc6999e8f31119f657/reports/9319d848-6ed1-4eb7-9b87-94e0d3c5037b/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/d27e8bd86eba4c9e7ffe5d6116d43fe73c3ff4656dbbd4f63a813d68da755d49
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/ccae163e-f4f7-41e3-877e-efaf56699d96
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1290947
Signature
Antivirus / Scanner detection for submitted sample
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)
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: 1290947 Sample: Scan_20230814_192419.exe Startdate: 14/08/2023 Architecture: WINDOWS Score: 100 31 zhongtaiyi-e-commerce.com 2->31 33 www.zhongtaiyi-e-commerce.com 2->33 35 26 other IPs or domains 2->35 47 Snort IDS alert for network traffic 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Antivirus detection for URL or domain 2->51 53 6 other signatures 2->53 10 Scan_20230814_192419.exe 3 31 2->10         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\System.dll, PE32 10->29 dropped 65 Tries to detect Any.run 10->65 14 Scan_20230814_192419.exe 6 10->14         started        signatures6 process7 dnsIp8 43 googlehosted.l.googleusercontent.com 142.250.185.129, 443, 49978 GOOGLEUS United States 14->43 45 drive.google.com 172.217.16.206, 443, 49977 GOOGLEUS United States 14->45 67 Modifies the context of a thread in another process (thread injection) 14->67 69 Tries to detect Any.run 14->69 71 Maps a DLL or memory area into another process 14->71 73 Queues an APC in another process (thread injection) 14->73 18 RAVCpl64.exe 14->18 injected signatures9 process10 process11 20 cmmon32.exe 13 18->20         started        signatures12 55 Tries to steal Mail credentials (via file / registry access) 20->55 57 Tries to harvest and steal browser information (history, passwords, etc) 20->57 59 Writes to foreign memory regions 20->59 61 3 other signatures 20->61 23 explorer.exe 2 1 20->23 injected 27 firefox.exe 20->27         started        process13 dnsIp14 37 www.foxxbro.com 91.195.240.123, 49989, 49990, 49991 SEDO-ASDE Germany 23->37 39 empowermedeco.com 84.32.84.32, 50021, 50022, 50023 NTT-LT-ASLT Lithuania 23->39 41 14 other IPs or domains 23->41 63 System process connects to network (likely due to code injection or exploit) 23->63 signatures15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d27e8bd86eba4c9e7ffe5d6116d43fe73c3ff4656dbbd4f63a813d68da755d49/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-08-14 07:56:49 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
9 of 24 (37.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2j7ixwdoxjgj4776lvqrnvb7446d75dfnw55j5r2qe6wrwtvlveq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
07fa172e1404c76738226cefc6e5d45559430c9946e419ed089d9ae5690783f9
GuLoader
20fb078a0205ca04adf66dd2250409721698e14e9e1d2590eeff2873265e896b
GuLoader
a7c55c55988c689f4950eec33581a2095c1dd6785cad65aa4418e67ca2bf9ea8
GuLoader
b534709b0de0c4392af03fea261580b08915ae1e5a55496f85dc21500c6a8338
GuLoader
c8edfb818e8a68ef4c127122bf9ae430d6d43ece8c9e70627cccb44e486f2827
GuLoader
dc5da53a5e93a588335b6561258d1540ac7d696c633d03de92e72d8e53254234
GuLoader
dfa04d8d3ce15de46fb7556375eb5ec64fc97d71c2275b6a471c86563ba7be71
GuLoader
f854bd36800e1023b94344b4e349a6a3b725872f39cadb9e6dc62b739fcf6b23
GuLoader
+ 1'565 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/230814-p9scgaea8z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
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:
a1390a78533c47e55cc364e97af431117126d04a7faed49390210ea3e89dd0e1
MD5 hash:
fbe295e5a1acfbd0a6271898f885fe6a
SHA1 hash:
d6d205922e61635472efb13c2bb92c9ac6cb96da
Link:
https://www.unpac.me/results/125a9099-68e9-4b22-a750-c19ea6d0049e/
SH256 hash:
d27e8bd86eba4c9e7ffe5d6116d43fe73c3ff4656dbbd4f63a813d68da755d49
MD5 hash:
92f84d78f6cadd60deef7a08630cafcd
SHA1 hash:
41b5bd7a367124f3ab328b2573cafe90a8b0a890
Link:
https://www.unpac.me/results/125a9099-68e9-4b22-a750-c19ea6d0049e/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_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.

Cape
Cape
https://www.capesandbox.com/analysis/442651/

Comments