MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5aac8ffc5b47783f1e3390e977698fefe72aad1545833d8b9524c0467706f72e. 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: 9


Intelligence 9 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5aac8ffc5b47783f1e3390e977698fefe72aad1545833d8b9524c0467706f72e
SHA3-384 hash: e1844cc2cdb72b6bd94aaa797005a755c761b8110f82abe664d0e4781a350e257f4f811aaa931f03a5bee214edc8e15e
SHA1 hash: 1b0ba07182cddd329e923de078156f01766b28aa
MD5 hash: 88a1597fed610168d8f9262e7fd7ac0c
humanhash: thirteen-colorado-angel-november
File name:DOC 10132021.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:135'168 bytes
First seen:2021-10-13 04:21:41 UTC
Last seen:2021-10-13 12:19:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 0a8e5f9658f839d07c08aa4f38837bac (8 x GuLoader)
ssdeep 3072:iR/BHGaXqggRUwWE7hOdnXhWZ2QLqw9mh7ObETDuvTuqZccm+Fp/rFwYUniR6eqY:E/ZgRULmh
Threatray 5'679 similar samples on MalwareBazaar
TLSH T15AD3B501E2DEDD55DA56817D4C438357BFAA7E425CC3281B3A2E16C83FEA82172857CE
File icon (PE):PE icon
dhash icon 1003873d31213f10 (142 x DarkCloud, 132 x GuLoader, 35 x a310Logger)
Reporter GovCERT_CH
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
3
# of downloads :
236
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DOC 10132021.exe
Verdict:
No threats detected
Analysis date:
2021-10-13 04:26:09 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/67d5b4b6-8c61-4587-bc8f-5815c876bf96

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/197067/
Detection(s):
SecuriteInfo.com.Variant.Razy.961905.27625.5399.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
67%
Tags:
formbook razy
Link:
https://www.filescan.io/uploads/61665eecfd35fe780c3c523c/reports/c38bbfa9-2bb6-42d5-9b1a-c6bfd5aac12a/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:
Malicious
Link:
https://analyze.intezer.com/analyses/04260040-7ef3-47b9-b92d-60d5b33698c9
Result
Threat name:
GuLoader AgentTesla
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad.spre.adwa.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/869284
Signature
Found malware configuration
GuLoader behavior detected
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Modifies the hosts file
Multi AV Scanner detection for submitted file
Potential malicious icon 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)
Sigma detected: RegAsm connects to smtp port
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 access)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1631 Sample: DOC 10132021.exe Startdate: 13/10/2021 Architecture: WINDOWS Score: 100 30 mail.binaryinfotech.com 2->30 32 binaryinfotech.com 2->32 34 5 other IPs or domains 2->34 50 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->50 52 Potential malicious icon found 2->52 54 Found malware configuration 2->54 56 5 other signatures 2->56 8 DOC 10132021.exe 2->8         started        11 tKZVPq.exe 2 2->11         started        13 tKZVPq.exe 1 2->13         started        signatures3 process4 signatures5 58 Writes to foreign memory regions 8->58 60 Tries to detect Any.run 8->60 62 Hides threads from debuggers 8->62 15 RegAsm.exe 2 11 8->15         started        20 conhost.exe 11->20         started        22 conhost.exe 13->22         started        process6 dnsIp7 36 binaryinfotech.com 132.148.164.170, 49770, 587 AS-26496-GO-DADDY-COM-LLCUS United States 15->36 38 googlehosted.l.googleusercontent.com 142.250.185.65, 443, 49766 GOOGLEUS United States 15->38 40 drive.google.com 142.250.186.142, 443, 49765 GOOGLEUS United States 15->40 26 C:\Users\user\AppData\Roaming\...\tKZVPq.exe, PE32 15->26 dropped 28 C:\Windows\System32\drivers\etc\hosts, ASCII 15->28 dropped 42 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->42 44 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->44 46 Tries to steal Mail credentials (via file access) 15->46 48 7 other signatures 15->48 24 conhost.exe 15->24         started        file8 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5aac8ffc5b47783f1e3390e977698fefe72aad1545833d8b9524c0467706f72e/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2021-10-13 04:22:06 UTC
AV detection:
14 of 44 (31.82%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lkwi77c3i54d6hrtsduxo2mp57tsvliviwbt3c4vetaem5yg64xa._file
Verdict:
malicious
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d1a3f5513cfaf506e96e6304d259fb03f5dc23542301fc9c7335a6e921ad65f9
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GuLoader
+ 5'669 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/211013-ey8vzaddbj/
Behaviour
Suspicious use of SetWindowsHookEx
Guloader,Cloudeye
Unpacked files
SH256 hash:
5aac8ffc5b47783f1e3390e977698fefe72aad1545833d8b9524c0467706f72e
MD5 hash:
88a1597fed610168d8f9262e7fd7ac0c
SHA1 hash:
1b0ba07182cddd329e923de078156f01766b28aa
Link:
https://www.unpac.me/results/0d34f045-643b-41b0-892e-09b373ec4291/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
GuLoader
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/5aac8ffc5b47783f1e3390e977698fefe72aad1545833d8b9524c0467706f72e

File information

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

Malspam

GuLoader

Executable exe 5aac8ffc5b47783f1e3390e977698fefe72aad1545833d8b9524c0467706f72e

(this sample)

  
Dropped by
guloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/197067/

Comments