MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8c09aa5ef25bcd378a81138c1eb67c3e259c3e1e8ab6a25d3f59859d0929937. 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: 16


Intelligence 16 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8c09aa5ef25bcd378a81138c1eb67c3e259c3e1e8ab6a25d3f59859d0929937
SHA3-384 hash: 91488baf1cf86a860a9dd4250cb25495389d7e7730a794ba46f4d81801ef8c1a7eb9a2b836ed51fdeb5ab64a37eaceaa
SHA1 hash: 42175bdb858a337ca4eebec00bf95f58a4c02758
MD5 hash: 9716ea95eab06a029d4be18a4e6c58ae
humanhash: west-lemon-muppet-asparagus
File name:INV#-6554674 PO #-SPVY25SC001-P01.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:790'528 bytes
First seen:2025-07-15 10:27:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 24576:aY4JZfL4YlrClC9ThiVMnOkTYF6umF91:zmfkMrClmTYVMOkUFfa
Threatray 3'026 similar samples on MalwareBazaar
TLSH T121F4021DF971EE21C6280B7BD2231DB081E68D92F564F35B188478E70F3A78685CB697
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10522/11/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
dhash icon ccb66361791992cc (11 x Formbook, 6 x VIPKeylogger, 2 x XWorm)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
31
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
INV#-6554674 PO #-SPVY25SC001-P01.exe
Verdict:
Malicious activity
Analysis date:
2025-07-15 10:29:48 UTC
Tags:
auto-sch-xml netreactor formbook xloader stealer
Link:
https://app.any.run/tasks/13177afd-4944-47ee-8de7-fafb645c544c

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/14470/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.15474.1626.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68762d07c9eb97473769161b
Tags:
stration spawn shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/68762d035076b202e43d6d94/reports/e4085570-353f-4ec2-b847-bb259302e42e/overview
Verdict:
Malicious
Labled as:
HackTool[Obfuscator]/MSIL.DeepSea
Link:
https://www.hybrid-analysis.com/sample/a8c09aa5ef25bcd378a81138c1eb67c3e259c3e1e8ab6a25d3f59859d0929937
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c832dd62-8572-4d8b-bda6-213bedda106c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1736886
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1736886 Sample: INV#-6554674  PO #-SPVY25SC... Startdate: 15/07/2025 Architecture: WINDOWS Score: 100 62 www.poker88gacor2025.xyz 2->62 64 www.magicsagents.xyz 2->64 66 16 other IPs or domains 2->66 78 Suricata IDS alerts for network traffic 2->78 80 Antivirus / Scanner detection for submitted sample 2->80 82 Sigma detected: Scheduled temp file as task from temp location 2->82 86 9 other signatures 2->86 11 INV#-6554674  PO #-SPVY25SC001-P01.exe 7 2->11         started        15 nEWZNQpXLavWV.exe 5 2->15         started        signatures3 84 Performs DNS queries to domains with low reputation 64->84 process4 file5 54 C:\Users\user\AppData\...\nEWZNQpXLavWV.exe, PE32 11->54 dropped 56 C:\...\nEWZNQpXLavWV.exe:Zone.Identifier, ASCII 11->56 dropped 58 C:\Users\user\AppData\Local\Temp\tmp11.tmp, XML 11->58 dropped 60 INV#-6554674  PO #...25SC001-P01.exe.log, ASCII 11->60 dropped 96 Adds a directory exclusion to Windows Defender 11->96 98 Injects a PE file into a foreign processes 11->98 17 INV#-6554674  PO #-SPVY25SC001-P01.exe 11->17         started        20 powershell.exe 23 11->20         started        22 powershell.exe 23 11->22         started        24 schtasks.exe 1 11->24         started        100 Antivirus detection for dropped file 15->100 102 Multi AV Scanner detection for dropped file 15->102 26 schtasks.exe 1 15->26         started        28 nEWZNQpXLavWV.exe 15->28         started        signatures6 process7 signatures8 74 Maps a DLL or memory area into another process 17->74 30 rX4vkFFlR.exe 17->30 injected 76 Loading BitLocker PowerShell Module 20->76 32 WmiPrvSE.exe 20->32         started        34 conhost.exe 20->34         started        36 conhost.exe 22->36         started        38 conhost.exe 24->38         started        40 conhost.exe 26->40         started        process9 process10 42 charmap.exe 30->42         started        signatures11 88 Tries to steal Mail credentials (via file / registry access) 42->88 90 Tries to harvest and steal browser information (history, passwords, etc) 42->90 92 Modifies the context of a thread in another process (thread injection) 42->92 94 3 other signatures 42->94 45 9gSr3PiiL8FFra.exe 42->45 injected 48 chrome.exe 42->48         started        50 firefox.exe 42->50         started        process12 dnsIp13 68 poker88gacor2025.xyz 162.222.227.139, 49773, 49774, 49775 PUBLIC-DOMAIN-REGISTRYUS United States 45->68 70 www.brightdrift.website 199.192.23.195, 49737, 49738, 49739 NAMECHEAP-NETUS United States 45->70 72 8 other IPs or domains 45->72 52 WerFault.exe 48->52         started        process14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a8c09aa5ef25bcd378a81138c1eb67c3e259c3e1e8ab6a25d3f59859d0929937
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable PE (Portable Executable) SOS: 0.05 Win 32 Exe x86
Link:
https://app.malva.re/file/9716ea95eab06a029d4be18a4e6c58ae
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a8c09aa5ef25bcd378a81138c1eb67c3e259c3e1e8ab6a25d3f59859d0929937/
Threat name:
ByteCode-MSIL.Trojan.XWorm
Create hunting rule
Status:
Malicious
First seen:
2025-07-15 04:13:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
25 of 37 (67.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vdajvjppew6ng6fice4md23hyprftq7b5cvwujot6wmftueste3q._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
06ede9a79380740bc6717b85c81962911c87ef299c0f9925e44cf66569784154
Formbook
6ae17339b8a76cb12268e292ad1bd020e9b02acad06d868472bf00926bb83821
Formbook
6d8d665ed1c840de96732ee893e4fce02f684b81491b92291fb99d537cd2b933
Formbook
a8c09aa5ef25bcd378a81138c1eb67c3e259c3e1e8ab6a25d3f59859d0929937
Formbook
b72158c1c37f7ef6edfe5511acd3c9f7131ee6093688290b33d250871d7b74fc
Formbook
d2d35b1008ab18a196bf68887081208b475a1a70a74ef2ee8da7fe065cc4ad09
Formbook
error
Formbook
+ 3'016 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution persistence
Link:
https://tria.ge/reports/250715-mg6y2szqv2/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6a72bc82-41b4-4213-b545-9e74e1ac259d
Unpacked files
SH256 hash:
a8c09aa5ef25bcd378a81138c1eb67c3e259c3e1e8ab6a25d3f59859d0929937
MD5 hash:
9716ea95eab06a029d4be18a4e6c58ae
SHA1 hash:
42175bdb858a337ca4eebec00bf95f58a4c02758
Link:
https://www.unpac.me/results/35df087f-6a83-4300-a4f2-69be67459712/
SH256 hash:
0ad9330f8096b30a282f53d51dfe44664f3ba3251199d25f097c01f43fe55aec
MD5 hash:
cc621595551035aa96c37e8738bfb040
SHA1 hash:
3507953a4fba3cf6df37347156f060e4e9e09ed7
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/35df087f-6a83-4300-a4f2-69be67459712/
Parent samples :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 hash:
8f3300976d94917d7a9873817669e8f2a4906e19eae812c39c72651004e011c8
MD5 hash:
a4546294e68738c44ec3371bc214a03e
SHA1 hash:
4acfe9c603c3a6f0c175347c6d1c2cc0ce7d28d0
Link:
https://www.unpac.me/results/35df087f-6a83-4300-a4f2-69be67459712/
SH256 hash:
d3f7a5e4cadb43518e03a9f441a94a29289df7985726c0ed97bd32590e9052d4
MD5 hash:
74373c6cdb5aa2103d46d60bb3e59549
SHA1 hash:
e89c4521a8441ea64ad7cf1a671cd553bcc1fc74
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/35df087f-6a83-4300-a4f2-69be67459712/
SH256 hash:
be578a3b4d4460c09dbe913761cc17be49328a48cc1d05d8babb21196f5b3bba
MD5 hash:
c717b3406444f158777d730febc82ef0
SHA1 hash:
06e73cefdd76e7020342144f38291e90208273c4
Link:
https://www.unpac.me/results/35df087f-6a83-4300-a4f2-69be67459712/
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/a8c09aa5ef25bcd378a81138c1eb67c3e259c3e1e8ab6a25d3f59859d0929937

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:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Malspam

Formbook

Executable exe a8c09aa5ef25bcd378a81138c1eb67c3e259c3e1e8ab6a25d3f59859d0929937

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/14470/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments