MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f857890d674a9d4abd8ef6d735c7c03eef0a75777c64cb4a62917d12b68dcbfa. 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 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f857890d674a9d4abd8ef6d735c7c03eef0a75777c64cb4a62917d12b68dcbfa
SHA3-384 hash: 35ba3167c99cd653a90d3637ea69edf59cfae1509712cbf4c0ed32447ce31d7c296671e21fbb1f0b54699374a2711ceb
SHA1 hash: 6b80852cc646780846f39f3aeb49a33efcf58fe1
MD5 hash: ab3df5bbb576a642cd7217eec843c1bf
humanhash: speaker-california-low-music
File name:ab3df5bbb576a642cd7217eec843c1bf
Download: download sample
Signature GuLoader
Create hunting rule
File size:363'840 bytes
First seen:2022-09-09 10:38:15 UTC
Last seen:2022-09-09 13:52:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 1f23f452093b5c1ff091a2f9fb4fa3e9 (282 x GuLoader, 37 x RemcosRAT, 27 x VIPKeylogger)
ssdeep 6144:0p+gg5PJgKl4jw8pmRdIwgX1EKOrAULAM1WnGN522/zL:UigKl9yIdwlEXzWGff
Threatray 3'156 similar samples on MalwareBazaar
TLSH T12674BF627650C1D1D1A56F33F51B88721A367D2E1A30910F2374BF2A3FF9683D929B1A
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 70f0d292ecf2f030 (9 x GuLoader)
Reporter zbetcheckin
Tags:32 exe GuLoader signed

Code Signing Certificate

Organisation:Marmorflisernes Dollars
Issuer:Marmorflisernes Dollars
Algorithm:sha256WithRSAEncryption
Valid from:2022-04-10T19:22:37Z
Valid to:2025-04-09T19:22:37Z
Serial number: -1155599fdd6a668a
Thumbprint Algorithm:SHA256
Thumbprint: dc90b7fac42e8a241df9c76adf433c91ff5929ff225ad8c2820b6d5698a342a7
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
3
# of downloads :
393
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ab3df5bbb576a642cd7217eec843c1bf
Verdict:
Malicious activity
Analysis date:
2022-09-09 10:41:39 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/5300435e-210c-46e7-9edc-f50612fc8fb5

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/308971/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.61858225.7634.17457.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file in the %AppData% subdirectories
Delayed reading of the file
Creating a file
Searching for the window
Searching for the Windows task manager window
Launching a process
Creating a process with a hidden window
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/37198/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
guloader nemesis overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/631b1806e73fb79b7a03e70c/reports/89652bdb-ff0a-4330-9f57-bc29cdc2f5e0/overview
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/303c809e-fd44-4bec-966f-832f31013d98
Result
Threat name:
Remcos, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1067720
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Installs a global keyboard hook
Mass process execution to delay analysis
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 700252 Sample: 6myXWYz7OB.exe Startdate: 09/09/2022 Architecture: WINDOWS Score: 100 135 gdyhjjdhbvxgsfe.gotdns.ch 2->135 143 Multi AV Scanner detection for domain / URL 2->143 145 Antivirus detection for URL or domain 2->145 147 Antivirus detection for dropped file 2->147 149 6 other signatures 2->149 13 6myXWYz7OB.exe 6 30 2->13         started        signatures3 process4 file5 127 C:\Users\user\AppData\Roaming\...\hgfs.dll, PE32+ 13->127 dropped 129 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 13->129 dropped 131 C:\Users\user\AppData\Local\...\System.dll, PE32 13->131 dropped 157 Mass process execution to delay analysis 13->157 159 Tries to detect Any.run 13->159 17 6myXWYz7OB.exe 13->17         started        22 powershell.exe 13->22         started        24 powershell.exe 13->24         started        26 126 other processes 13->26 signatures6 process7 dnsIp8 133 81.161.229.156, 49789, 49794, 80 CMCSUS Germany 17->133 117 C:\Users\user\AppData\Roaming\doc.exe, PE32 17->117 dropped 119 C:\Users\user\...\doc.exe:Zone.Identifier, ASCII 17->119 dropped 121 C:\Users\user\AppData\Local\...\install.vbs, data 17->121 dropped 151 Tries to detect Any.run 17->151 28 wscript.exe 17->28         started        30 conhost.exe 17->30         started        32 conhost.exe 22->32         started        40 2 other processes 22->40 34 conhost.exe 24->34         started        42 2 other processes 24->42 36 conhost.exe 26->36         started        38 conhost.exe 26->38         started        44 213 other processes 26->44 file9 signatures10 process11 process12 46 cmd.exe 28->46         started        52 2 other processes 28->52 48 conhost.exe 30->48         started        55 3 other processes 32->55 57 3 other processes 34->57 59 4 other processes 36->59 61 4 other processes 38->61 50 conhost.exe 42->50         started        63 102 other processes 44->63 file13 65 doc.exe 46->65         started        69 conhost.exe 46->69         started        123 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 52->123 dropped 125 C:\Users\user\AppData\Local\...\System.dll, PE32 52->125 dropped 71 WerFault.exe 52->71         started        73 conhost.exe 55->73         started        75 3 other processes 55->75 77 3 other processes 57->77 79 2 other processes 59->79 81 3 other processes 61->81 83 38 other processes 63->83 process14 file15 113 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 65->113 dropped 115 C:\Users\user\AppData\Local\...\System.dll, PE32 65->115 dropped 139 Multi AV Scanner detection for dropped file 65->139 141 Tries to detect Any.run 65->141 85 doc.exe 65->85         started        89 conhost.exe 73->89         started        91 conhost.exe 75->91         started        93 conhost.exe 77->93         started        101 2 other processes 77->101 95 conhost.exe 79->95         started        97 conhost.exe 83->97         started        99 conhost.exe 83->99         started        103 4 other processes 83->103 signatures16 process17 dnsIp18 137 gdyhjjdhbvxgsfe.gotdns.ch 37.139.129.71, 2718, 49795 LVLT-10753US Germany 85->137 153 Tries to detect Any.run 85->153 155 Installs a global keyboard hook 85->155 105 conhost.exe 89->105         started        107 conhost.exe 89->107         started        109 conhost.exe 93->109         started        signatures19 process20 process21 111 conhost.exe 105->111         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f857890d674a9d4abd8ef6d735c7c03eef0a75777c64cb4a62917d12b68dcbfa/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2022-09-06 06:11:18 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
23 of 40 (57.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7blysdlhjkouvpmo63ltlr6ah3xqu5lxprsmwstcsf6rfnunzp5a._file
Verdict:
malicious
Similar samples:
088999945f71cb731f4fa4d6e73591ecdf1829306a6dca66be75947fc0c8d00b
GuLoader
4b8fd58c2935fdb8d5cdfcdb8e504b75fabbf68c7cf130d86cb912a790fdf7a0
GuLoader
60952b7b0b3edeb47b07f1d2a0fb87856b165550e47c605c4ef4fb1da699a332
GuLoader
6b1df4cb218093a57a5646f0d6ece41d548fae6cce51d90d1540686d747069b6
GuLoader
8f4d63fea00eca6d91147de6a10b7aae6069f164ef00d5986eff571249552dae
GuLoader
9fff2ab375e26431e4cd6f35aa3b1446a4cba8ec78d0bd61bde694ee6474ded4
GuLoader
a89c531ad157965de03cf15ab2783f0b24e6db0981556a7bf5ad8fe5c7d66ef5
GuLoader
b5bcbfe8ba02879ac963d4f9ed48203c934e80edb58b814129ad836544f2c3a3
GuLoader
d87e7752ee36b46b902d88317b5c5b172927760a4f171c95f812991ec62ae963
GuLoader
ed20ff85f5df587140e0780e16a5eb28df94e1b6330c8256de39d94b5a772e83
GuLoader
+ 3'146 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/220909-mpymmsbgbn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Checks installed software on the system
Loads dropped DLL
Unpacked files
SH256 hash:
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
MD5 hash:
75ed96254fbf894e42058062b4b4f0d1
SHA1 hash:
996503f1383b49021eb3427bc28d13b5bbd11977
Link:
https://www.unpac.me/results/6a1b2228-8544-4df0-9c42-04524bf06f62/
SH256 hash:
8bdd996ae4778c6f829e2bcb651c55efc9ec37eeea17d259e013b39528dddbb6
MD5 hash:
3d366250fcf8b755fce575c75f8c79e4
SHA1 hash:
2ebac7df78154738d41aac8e27d7a0e482845c57
Link:
https://www.unpac.me/results/6a1b2228-8544-4df0-9c42-04524bf06f62/
SH256 hash:
bb7e367bee3e91651d444db3c2f0997de914650547c66473bb201a2724d49196
MD5 hash:
6ea4aa54a7837e790c0b822dc8c27cd6
SHA1 hash:
1ed173163c496c482b36ef737fb6832e2b82cb6e
Link:
https://www.unpac.me/results/6a1b2228-8544-4df0-9c42-04524bf06f62/
SH256 hash:
f857890d674a9d4abd8ef6d735c7c03eef0a75777c64cb4a62917d12b68dcbfa
MD5 hash:
ab3df5bbb576a642cd7217eec843c1bf
SHA1 hash:
6b80852cc646780846f39f3aeb49a33efcf58fe1
Link:
https://www.unpac.me/results/6a1b2228-8544-4df0-9c42-04524bf06f62/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f857890d674a9d4abd8ef6d735c7c03eef0a75777c64cb4a62917d12b68dcbfa

File information

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

Web download

GuLoader

Executable exe f857890d674a9d4abd8ef6d735c7c03eef0a75777c64cb4a62917d12b68dcbfa

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2297608/
Cape
Cape
https://www.capesandbox.com/analysis/308971/

Comments


Avatar
zbet commented on 2022-09-09 10:38:20 UTC

url : hxxp://81.161.229.156/HYY.exe