MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2bb3ec5f6e8830a1b8e87a95bcb53406688386e7dd33149bb8117318f28faba9. 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: 6


Intelligence 6 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2bb3ec5f6e8830a1b8e87a95bcb53406688386e7dd33149bb8117318f28faba9
SHA3-384 hash: 4f6e468d8df52cefabdf40613a2b16c6b2d5fd07d0be50cfca65142ec7bddde460bd0a7512025e372b766d741f954a80
SHA1 hash: 4fb67fb325b390cdb437bf8260087ac280847151
MD5 hash: ea8b22c4f7790cfb5dd8fa15f97ac4b7
humanhash: helium-mars-venus-rugby
File name:Invoice 11205034886.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:720'896 bytes
First seen:2020-08-16 13:54:02 UTC
Last seen:2020-08-16 15:07:30 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f267a0b4fb271101065383ec5c68d5c6 (2 x AgentTesla, 1 x Loki, 1 x GuLoader)
ssdeep 12288:Eq9CRixt4LFWJB0UWJ1J30s1nIiu88yQrv2wzaOJ7:P0kuHbJPpl/QrXOOJ7
Threatray 10'954 similar samples on MalwareBazaar
TLSH 47E46D22B2D07433C132167A9D3B63B8A83ABF152E29A9466BF44CCC5F396433575397
Reporter abuse_ch
Tags:exe GuLoader


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: winterfell.networkredux.net
Sending IP: 209.191.187.244
From: Env Billing <env.billing@imdaad.ae>
Subject: IMDAAD LLC - Invoice Submission - Invoice Number : 11205034886
Attachment: Invoice 11205034886.iso (contains "Invoice 11205034886.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
262
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/46464/
Detection(s):
PUA.Win.Adware.Slugin-6803969-0
Create hunting rule

PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Sending a UDP request
Result
Threat name:
AgentTesla GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/432251
Signature
Contains functionality to detect hardware virtualization (CPUID execution measurement)
Contains functionality to detect sleep reduction / modifications
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
May check the online IP address of the machine
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Tries to detect Any.run
Tries to detect virtualization through RDTSC time measurements
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 access)
Yara detected Agent Tesla Trojan
Yara detected AgentTesla
Yara detected GuLoader
Yara detected VB6 Downloader Generic
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 267909 Sample: Invoice 11205034886.exe Startdate: 16/08/2020 Architecture: WINDOWS Score: 100 23 checkip.us-east-1.prod.check-ip.aws.a2z.com 2->23 25 checkip.check-ip.aws.a2z.com 2->25 27 checkip.amazonaws.com 2->27 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Detected unpacking (changes PE section rights) 2->49 51 11 other signatures 2->51 9 Invoice 11205034886.exe 2->9         started        signatures3 process4 signatures5 61 Maps a DLL or memory area into another process 9->61 12 Invoice 11205034886.exe 1 9->12         started        process6 signatures7 63 Tries to detect Any.run 12->63 65 Hides threads from debuggers 12->65 15 Invoice 11205034886.exe 6 12->15         started        process8 dnsIp9 35 googlehosted.l.googleusercontent.com 172.217.168.33, 443, 49744 GOOGLEUS United States 15->35 37 doc-0c-3k-docs.googleusercontent.com 15->37 39 Tries to detect Any.run 15->39 41 Maps a DLL or memory area into another process 15->41 43 Hides threads from debuggers 15->43 19 Invoice 11205034886.exe 16 15->19         started        signatures10 process11 dnsIp12 29 enmark.com.my 110.4.45.145, 49753, 49767, 587 EXABYTES-AS-APExaBytesNetworkSdnBhdMY Malaysia 19->29 31 mail.enmark.com.my 19->31 33 192.168.2.1 unknown unknown 19->33 53 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 19->53 55 Tries to steal Mail credentials (via file access) 19->55 57 Tries to harvest and steal ftp login credentials 19->57 59 Tries to harvest and steal browser information (history, passwords, etc) 19->59 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2bb3ec5f6e8830a1b8e87a95bcb53406688386e7dd33149bb8117318f28faba9/
Threat name:
Win32.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-08-16 13:55:07 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=foz6yx3oraykdohipkk3znjuazuihbxh3uzrjg5ycfzrr4upvouq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
hawkeyekeylogger
Create hunting rule
guloader
Create hunting rule
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818d44389dd6093e4feaa71b531c2ff43afd61c37f7d067b431b7bdf667754ed
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a3cae0aae6bb5a0d6b4710e161925a315fd3ef4a5bfef88eea9fee94b35874d4
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a9abad7f4aace35de5651f437a83f47787606345d04ea63426db6a7a9b02ba5e
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GuLoader
+ 10'944 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/200816-q1wsy4q4xe/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
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/2bb3ec5f6e8830a1b8e87a95bcb53406688386e7dd33149bb8117318f28faba9

File information

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

Malspam

GuLoader

iso 3ec5c9446f6ffc9fd58cf9fe954649e792fbeb11e3262273988583716c0432a2

GuLoader

Executable exe 2bb3ec5f6e8830a1b8e87a95bcb53406688386e7dd33149bb8117318f28faba9

(this sample)

  
Dropped by
MD5 cff88c08225995d50586892647323747
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/46464/
  
Dropped by
SHA256 3ec5c9446f6ffc9fd58cf9fe954649e792fbeb11e3262273988583716c0432a2

Comments