MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3a232eeba1fafa7da4d19cfa4a0dc02b593009499d17a1bac279a8d93c0663d. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3a232eeba1fafa7da4d19cfa4a0dc02b593009499d17a1bac279a8d93c0663d
SHA3-384 hash: 5d314286a99b3386640ab21ba2b7138e68bca95ff8068c16aa2a3002505bf2e839550e6106fba1049c85a121ce9bccd5
SHA1 hash: 539ac0da68c1a997d1bac48086758c167fe740a1
MD5 hash: 5fe77c6027fa23fedabc857258e74dda
humanhash: kentucky-nine-nine-mountain
File name:Akbank Hesap Özetiniz.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:414'168 bytes
First seen:2023-08-17 18:25:25 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 12288:ztLWRJQobrqSnXhR/8HwIH4rmxOt93OXQ1swIoQ:z56JJ3nXhR/8QIYSxOtFcQBIoQ
Threatray 1'947 similar samples on MalwareBazaar
TLSH T12C9422103695C013EE830A31282DDFBB26EE6E203C78771F37A6F582697A753561DE16
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 70f4e0f0f0e4f078 (4 x GuLoader, 1 x AgentTesla)
Reporter abuse_ch
Tags:Akbank exe geo GuLoader signed TUR

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-07-12T23:15:33Z
Valid to:2026-07-11T23:15:33Z
Serial number: 6f80704bad8683e381973792d2289ed6e9c46316
Thumbprint Algorithm:SHA256
Thumbprint: 20ef818ab7b312a6fa144933ba92ec674461e831c41656dfe103a2ac32ec7947
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
272
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Akbank Hesap Özetiniz.exe
Verdict:
Malicious activity
Analysis date:
2023-08-17 18:52:44 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/cd1b84ae-3ef1-4772-824e-5564c2c06b33

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/443320/
Detection(s):
SecuriteInfo.com.Win32.Evo-gen.20131.9908.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Delayed reading of the file
Searching for the window
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/103068/overview
Behaviour
MalwareBazaar
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/a3a232eeba1fafa7da4d19cfa4a0dc02b593009499d17a1bac279a8d93c0663d
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/a2823404-d566-4b97-a466-05c5ba2bf3e5
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1293067
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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)
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1293067 Sample: Akbank_Hesap_#U00d6zetiniz.exe Startdate: 17/08/2023 Architecture: WINDOWS Score: 100 34 zentrimax.com 2->34 36 www.zentrimax.com 2->36 38 26 other IPs or domains 2->38 58 Snort IDS alert for network traffic 2->58 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 6 other signatures 2->64 11 Akbank_Hesap_#U00d6zetiniz.exe 11 50 2->11         started        signatures3 process4 file5 30 C:\Users\user\AppData\Local\...\System.dll, PE32 11->30 dropped 32 C:\...\Microsoft.WindowsAPICodePack.Shell.dll, PE32 11->32 dropped 72 Tries to detect Any.run 11->72 15 Akbank_Hesap_#U00d6zetiniz.exe 6 11->15         started        signatures6 process7 dnsIp8 46 drive.google.com 142.250.185.174, 443, 49890 GOOGLEUS United States 15->46 48 googlehosted.l.googleusercontent.com 142.250.186.33, 443, 49891 GOOGLEUS United States 15->48 50 Modifies the context of a thread in another process (thread injection) 15->50 52 Tries to detect Any.run 15->52 54 Maps a DLL or memory area into another process 15->54 56 2 other signatures 15->56 19 explorer.exe 4 1 15->19 injected signatures9 process10 dnsIp11 40 www.ecoproducefest.info 217.160.0.7, 49901, 80 ONEANDONE-ASBrauerstrasse48DE Germany 19->40 42 cbd-docteurenherbe.com 109.234.162.108, 49907, 80 O2SWITCHFR France 19->42 44 10 other IPs or domains 19->44 66 System process connects to network (likely due to code injection or exploit) 19->66 23 help.exe 19->23         started        signatures12 process13 signatures14 68 Modifies the context of a thread in another process (thread injection) 23->68 70 Maps a DLL or memory area into another process 23->70 26 cmd.exe 1 23->26         started        process15 process16 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3a232eeba1fafa7da4d19cfa4a0dc02b593009499d17a1bac279a8d93c0663d/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-08-16 15:08:39 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
9 of 38 (23.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uordf3v2d6x2pwsndhh2jig4ak2zgaeuthixug5me6ni3e6amy6q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
cloudeye
Create hunting rule
Similar samples:
0802394968eda97506836e12c3deb32af74ad1ffcc86b22e4d654d10b865241c
GuLoader
2d3c7fefde60268ec96906144d74058651f6d5d7ed5993a8b1ed00ca40a2d7f0
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2fb0a24e905687a5443fbe50d21033e4318da3275260bd82d016a9af346bb09b
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539d920211675f7cc535698b9223aae7d732e46d747bae86c00234e8b6dcb3ff
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59d3d0d82273ee3a78483d3508a8247593a06826f8531de8ca072718e6609598
GuLoader
74c460852f392fbdd2ef8d83d9461371228d37fba88a6431fd205ee20bccf622
GuLoader
7a55e4b3f800275bc0f7c00cd337d0dd83379ef845fce3fa55b86d68092c1b9c
GuLoader
a06ac680f7c3454cdfe9e777f1dc9e6867e3556d323986c428aead576d2ede5c
GuLoader
be0791f3e56382436345ae0413249be5e66c0a593afc1c83ab57d8bbae61d4ba
GuLoader
c912574d97fc69697687cc5f38f0d6ca750c58a11227f442fde822160240534c
GuLoader
+ 1'937 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:guloader campaign:fg83 downloader rat spyware stealer trojan
Link:
https://tria.ge/reports/230817-w27kraca78/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
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
Formbook payload
Formbook
Guloader,Cloudeye
Unpacked files
SH256 hash:
c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448
MD5 hash:
9625d5b1754bc4ff29281d415d27a0fd
SHA1 hash:
80e85afc5cccd4c0a3775edbb90595a1a59f5ce0
Link:
https://www.unpac.me/results/4f947a64-e537-4b1b-b6d1-450d58e8d4e6/
SH256 hash:
aa5d80cdc0da52970031309b457e3e3fd505bb1ac13fb79801d15bfbb4a700b2
MD5 hash:
6d8deb7be7360761fd43ec9ddcaa0811
SHA1 hash:
b45482a37b381de2a0293b6be48c4cdef04aebff
Link:
https://www.unpac.me/results/4f947a64-e537-4b1b-b6d1-450d58e8d4e6/
SH256 hash:
a3a232eeba1fafa7da4d19cfa4a0dc02b593009499d17a1bac279a8d93c0663d
MD5 hash:
5fe77c6027fa23fedabc857258e74dda
SHA1 hash:
539ac0da68c1a997d1bac48086758c167fe740a1
Link:
https://www.unpac.me/results/4f947a64-e537-4b1b-b6d1-450d58e8d4e6/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a3a232eeba1f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/a3a232eeba1fafa7da4d19cfa4a0dc02b593009499d17a1bac279a8d93c0663d

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: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.

Malspam

GuLoader

Executable exe a3a232eeba1fafa7da4d19cfa4a0dc02b593009499d17a1bac279a8d93c0663d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/443320/

Comments