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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa9879b41c127636d0dc71eec88eb08961d2cd7dff6e5ec99b86afdf7ac7b3f7. 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


Formbook


Vendor detections: 18


Intelligence 18 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aa9879b41c127636d0dc71eec88eb08961d2cd7dff6e5ec99b86afdf7ac7b3f7
SHA3-384 hash: c0e612baaabcfcf8799b8e826c031910bacad11925bf1cadf3b2ce398562ad6211d7bd8b079a81956c27493e8144c89a
SHA1 hash: e6fc541b19c5c788090450b0cacea132d678753e
MD5 hash: fa27ae4dfca3e75af08339b3995cc79b
humanhash: pluto-vermont-angel-mountain
File name:ADIPEC 2026 PO98476745.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:924'672 bytes
First seen:2026-08-27 17:28:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'202 x AgentTesla, 20'373 x Formbook, 12'365 x SnakeKeylogger)
ssdeep 24576:7o+0MT7TDK0vUt4IwHuBG5nI/0j9eLdtB5DPJtklAM+:7sMT3W0m4HVI8jSBpjTP
TLSH T1B91522A13359EF55D53A03B50A72D6799BB52D8D9432C31BCEDDAEFB7420B00AC08A43
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
204
Origin country :
US US
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/5098fe0d-c586-497c-beb9-a0351d0fb478/
Malware family:
guloader
Create hunting rule
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-08-27 17:35:15 UTC
Tags:
auto-reg guloader loader formbook stealer xloader
Link:
https://app.any.run/tasks/37a068db-79cc-454c-9854-256070768ca3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/83070/
Detection(s):
SecuriteInfo.com.Trojan.BankBot.3597.28425922.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6a9073ae77b9aed32257c61e/reports/1f22d256-f64d-47c7-8cbc-8ea60a12bffd/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/aa9879b41c127636d0dc71eec88eb08961d2cd7dff6e5ec99b86afdf7ac7b3f7
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-08-27T11:17:00Z UTC
Last seen:
2026-08-29T03:05:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/aa9879b41c127636d0dc71eec88eb08961d2cd7dff6e5ec99b86afdf7ac7b3f7/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/ccf0f61a-7c21-4009-81fd-3b995760ecf1
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/aa9879b41c127636d0dc71eec88eb08961d2cd7dff6e5ec99b86afdf7ac7b3f7
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.32 Win 32 Exe x86
Link:
https://app.malva.re/file/fa27ae4dfca3e75af08339b3995cc79b
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/aa9879b41c127636d0dc71eec88eb08961d2cd7dff6e5ec99b86afdf7ac7b3f7/
Threat name:
Win32.Trojan.NegaStealer
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Status:
Malicious
First seen:
2026-08-27 16:57:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vkmhtna4cj3dnug4ohxmrdvqrfq5ftl575xf5sm3q2x566whwp3q._file
Verdict:
malicious
Label(s):
Formbook
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Link:
https://reports.threatray.com/5d98ccad-f9e3-4043-b443-7b36b2892f87
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:oi63 discovery execution persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/260827-v14a9scj7w/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
aa9879b41c127636d0dc71eec88eb08961d2cd7dff6e5ec99b86afdf7ac7b3f7
MD5 hash:
fa27ae4dfca3e75af08339b3995cc79b
SHA1 hash:
e6fc541b19c5c788090450b0cacea132d678753e
Link:
https://www.unpac.me/results/becf5b0c-6dbe-4355-acfc-38ced306c35c/
SH256 hash:
2b0a3e1c220e8a98eb358a391da117b853882e411df4c9bbf54acc7ae629061f
MD5 hash:
38181717c94e497221567b84b23a75d0
SHA1 hash:
48332b950e1ee5fb10c3ee5eb8705e01e603edda
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/becf5b0c-6dbe-4355-acfc-38ced306c35c/
Parent samples :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 hash:
aaa7c919779d65ed40643c8f942ab8369b05165a2cc4c76f80ff7c9d794052ad
MD5 hash:
5504cdc4cc5e73acfa04d18dee2a2ba7
SHA1 hash:
781c00b711103672ef1ddeeb5b68f54f38c27443
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/becf5b0c-6dbe-4355-acfc-38ced306c35c/
SH256 hash:
fca31b2cfab84a15f301690f09ca43039eece26f32f8e968f72ced2cb473cbe4
MD5 hash:
b99605f0cded97d8a76daa0c589162b3
SHA1 hash:
0f72095330e7a4f271ba004de10ac5dd22400ef3
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Link:
https://www.unpac.me/results/becf5b0c-6dbe-4355-acfc-38ced306c35c/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/aa9879b41c12/report/overview.html
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/aa9879b41c127636d0dc71eec88eb08961d2cd7dff6e5ec99b86afdf7ac7b3f7

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/83070/

Comments