MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1a090934724f507a62abdf0d9b07f477cc504d50b469f52797df17fc8739549a. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1a090934724f507a62abdf0d9b07f477cc504d50b469f52797df17fc8739549a
SHA3-384 hash: a70a714f9fba6eae937805ba541b6ca755c46b3bf9a657818712fa49831e9897bb0f1ebcb8ee5a0304c6d727dcc44535
SHA1 hash: a4e92f4e1f1f7a1adca944b7133f29212d09c313
MD5 hash: 2540d96e0c2b9513beff288ac7fba7e3
humanhash: echo-alpha-missouri-stairway
File name:doc_cbc374838949394001_pdf.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:425'104 bytes
First seen:2022-10-20 12:53:25 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (527 x GuLoader, 110 x RemcosRAT, 80 x EpsilonStealer)
ssdeep 6144:vNgoThHBNmUpzIx/y4V2ZUWpFAjTbGxDLVoPuraFpT73VzmOQIzHqxYfNeaQ:lVR2x2ZwjnoDL1GT73RPVGxX
TLSH T162940125BA45E426C6600DB4CDA3EAF9D5A57E00DC95470FB3E43F8F79B9702A90E306
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 6676f6f46c481929 (1 x GuLoader)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-03-29T21:53:35Z
Valid to:2025-03-28T21:53:35Z
Serial number: -4eedffcf752b5e84
Thumbprint Algorithm:SHA256
Thumbprint: bf8d5ef937b0c0ec6656cbc7e3da360a84fdacd34526ef997853a79c078ea7a5
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
271
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
doc_cbc374838949394001_pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-10-20 12:56:16 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/534de754-6950-4e6c-8fc2-e377ff5fb213

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/321994/
Detection(s):
SecuriteInfo.com.Trojan.Siggen8.40546.2143.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Delayed reading of the file
Creating a file in the %temp% subdirectories
Searching for the Windows task manager window
Running batch commands
Creating a process with a hidden window
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/43969/overview
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/635144ed66721ebd9b2f495a/reports/aa326878-f8e2-469e-a910-d04a787c87be/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/26ab1ebe-e291-408a-84ef-0e939b820f6d
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1094146
Signature
Antivirus detection for URL or domain
Initial sample is a PE file and has a suspicious name
Mass process execution to delay analysis
Multi AV Scanner detection for submitted file
Obfuscated command line found
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Snort IDS alert for network traffic
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 harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 726776 Sample: doc_cbc374838949394001_pdf.exe Startdate: 20/10/2022 Architecture: WINDOWS Score: 100 44 acbcr.ro 2->44 46 qhojhl.tk 2->46 48 ftp.acbcr.ro 2->48 56 Snort IDS alert for network traffic 2->56 58 Antivirus detection for URL or domain 2->58 60 Multi AV Scanner detection for submitted file 2->60 62 4 other signatures 2->62 8 doc_cbc374838949394001_pdf.exe 2 31 2->8         started        signatures3 process4 file5 36 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 8->36 dropped 38 C:\Users\user\AppData\Local\...\System.dll, PE32 8->38 dropped 40 C:\Users\user\AppData\Local\...\liblzma-5.dll, PE32+ 8->40 dropped 42 C:\Users\user\AppData\Local\...\btreeinfo.dll, PE32+ 8->42 dropped 64 Obfuscated command line found 8->64 66 Writes to foreign memory regions 8->66 68 Mass process execution to delay analysis 8->68 70 Tries to detect Any.run 8->70 12 CasPol.exe 15 11 8->12         started        16 cmd.exe 8->16         started        18 cmd.exe 8->18         started        20 62 other processes 8->20 signatures6 process7 dnsIp8 50 acbcr.ro 188.241.74.68, 21, 34024, 49838 TELECABLU-ASNRO Romania 12->50 52 qhojhl.tk 162.240.78.78, 49836, 80 UNIFIEDLAYER-AS-1US United States 12->52 54 192.168.11.1 unknown unknown 12->54 72 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->72 74 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->74 76 Tries to steal Mail credentials (via file / registry access) 12->76 78 4 other signatures 12->78 22 conhost.exe 12->22         started        24 Conhost.exe 16->24         started        26 Conhost.exe 18->26         started        28 Conhost.exe 20->28         started        30 Conhost.exe 20->30         started        32 Conhost.exe 20->32         started        34 59 other processes 20->34 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1a090934724f507a62abdf0d9b07f477cc504d50b469f52797df17fc8739549a/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2022-10-20 04:30:05 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
14 of 26 (53.85%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dieqsndsj5ihuyvl34gzwb7uo7gfatkqwru7kj4x34l7zbzzksna._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/221020-p47vzaebhn/
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Checks installed software on the system
Loads dropped DLL
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9d2c9546-45bd-4efb-ba3a-73fa12088cc4
Unpacked files
SH256 hash:
5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962
MD5 hash:
ec0504e6b8a11d5aad43b296beeb84b2
SHA1 hash:
91b5ce085130c8c7194d66b2439ec9e1c206497c
Link:
https://www.unpac.me/results/8d3567d7-0d34-47c2-9446-b6e2ab93abdd/
SH256 hash:
3f47a24d6eeb1203e3325f0b06023e9678df7e860e953925057de17e6c539be4
MD5 hash:
fd78a68cb7e9fa26dec0d9d1b2342c72
SHA1 hash:
06d39a9eadc6d4272a5ae2f2ce632de5628d375b
Link:
https://www.unpac.me/results/8d3567d7-0d34-47c2-9446-b6e2ab93abdd/
SH256 hash:
1a090934724f507a62abdf0d9b07f477cc504d50b469f52797df17fc8739549a
MD5 hash:
2540d96e0c2b9513beff288ac7fba7e3
SHA1 hash:
a4e92f4e1f1f7a1adca944b7133f29212d09c313
Link:
https://www.unpac.me/results/8d3567d7-0d34-47c2-9446-b6e2ab93abdd/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.13
Link:
https://yomi.yoroi.company/submissions/1a090934724f507a62abdf0d9b07f477cc504d50b469f52797df17fc8739549a

File information

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

Malspam

GuLoader

Executable exe 1a090934724f507a62abdf0d9b07f477cc504d50b469f52797df17fc8739549a

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/321994/

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