MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8d8125ab11e71b1f93a499ebfcf39c91ad208f3260fa3a848188a0b39cba3898. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8d8125ab11e71b1f93a499ebfcf39c91ad208f3260fa3a848188a0b39cba3898
SHA3-384 hash: d19af5cdbd88f9a371aa3a4386a7c74dc387b2061ce2e829717d919715aad65a343c87ebf57dc77b8c6478ce6c6c1c37
SHA1 hash: 5201a5998554148aab35d0074dc9bb1953a48d21
MD5 hash: 2d8acdbb6fd1ec86a3a3032a39f2bbb3
humanhash: kentucky-five-berlin-nineteen
File name:8d8125ab11e71b1f93a499ebfcf39c91ad208f3260fa3a848188a0b39cba3898
Download: download sample
Signature Formbook
Create hunting rule
File size:620'544 bytes
First seen:2025-06-10 11:20:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:k3DB6ygN7MpgC2auQWHtCVdInW96hWtbqmnJo84N2E6G8lD:kz6MH2auN+h8hWRRidS
Threatray 4'595 similar samples on MalwareBazaar
TLSH T102D4125A4367D923C4A607B94623E2F417B89EDEC422C75ACFE95CDBB52BB102340367
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
dhash icon 8271f0d4d4e87192 (10 x Formbook, 9 x SnakeKeylogger, 9 x MassLogger)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
373
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
8d8125ab11e71b1f93a499ebfcf39c91ad208f3260fa3a848188a0b39cba3898
Verdict:
No threats detected
Analysis date:
2025-06-10 19:06:32 UTC
Tags:
netreactor
Link:
https://app.any.run/tasks/6d73faed-530b-436a-91c4-db10cd9cbc73

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/8756/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6848151007b5e8c1cfe61681
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/68481532e336a33801e69d6f/reports/d8ae5373-8205-4712-8ae7-4acf47c7d83d/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/8d8125ab11e71b1f93a499ebfcf39c91ad208f3260fa3a848188a0b39cba3898
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f772c200-6b69-42bd-9d78-b9307858d6c5
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1711037
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
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
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Uses threadpools to delay analysis
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1711037 Sample: O9m8yWdG3T.exe Startdate: 10/06/2025 Architecture: WINDOWS Score: 100 29 www.usmmsa.net 2->29 31 www.roundsales.store 2->31 33 5 other IPs or domains 2->33 35 Found malware configuration 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Multi AV Scanner detection for submitted file 2->39 41 6 other signatures 2->41 11 O9m8yWdG3T.exe 3 2->11         started        signatures3 process4 file5 27 C:\Users\user\AppData\...\O9m8yWdG3T.exe.log, ASCII 11->27 dropped 51 Tries to detect virtualization through RDTSC time measurements 11->51 53 Injects a PE file into a foreign processes 11->53 55 Uses threadpools to delay analysis 11->55 57 Switches to a custom stack to bypass stack traces 11->57 15 O9m8yWdG3T.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 2 other signatures 15->65 18 explorer.exe 33 1 15->18 injected process9 process10 20 explorer.exe 18->20         started        signatures11 43 Modifies the context of a thread in another process (thread injection) 20->43 45 Maps a DLL or memory area into another process 20->45 47 Tries to detect virtualization through RDTSC time measurements 20->47 49 Switches to a custom stack to bypass stack traces 20->49 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8d8125ab11e71b1f93a499ebfcf39c91ad208f3260fa3a848188a0b39cba3898
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8d8125ab11e71b1f93a499ebfcf39c91ad208f3260fa3a848188a0b39cba3898/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-05-29 13:33:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
28 of 36 (77.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rwaslkyr44nr7e5ethv7z444sgwsbdzsmd5dvbebrcqlhhf2hcma._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
055fc07fef20e60123cd7d9760cffff1cfceac4a752a91b810bb708da88b4316
Formbook
3011a6748e93cfd402bfb34fa6ff8fe8a1f907b150ec6957d5a84a6f44249a16
Formbook
7157f19969ea92bb660c62b91144ca8be1d6f1631252c7d1f7125fd957a1cde6
Formbook
8d8125ab11e71b1f93a499ebfcf39c91ad208f3260fa3a848188a0b39cba3898
Formbook
c6113d38b157b316943297f3981f9cb3291e0c4b62fbbded5143d115586fd1dc
Formbook
error
Formbook
f4f30e7141908e117623dcac4e9f98cee8287fab750a1d720bdba5350cad19c9
Formbook
+ 4'585 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:i26e discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250610-ngt5xsdl51/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/eaeed52f-e27d-40aa-8878-c3e527cbea6a
Unpacked files
SH256 hash:
8d8125ab11e71b1f93a499ebfcf39c91ad208f3260fa3a848188a0b39cba3898
MD5 hash:
2d8acdbb6fd1ec86a3a3032a39f2bbb3
SHA1 hash:
5201a5998554148aab35d0074dc9bb1953a48d21
Link:
https://www.unpac.me/results/4c39f456-282a-4b95-a54b-52a58788b45b/
SH256 hash:
ff55838cf83322ceab30a512da916f2821181007e95c8fa68674825df8c819b4
MD5 hash:
c9d09ec2449e60042cfc5222e0905ac9
SHA1 hash:
00f21d00230d6595f91ea5c990910f86bbfa44b1
Link:
https://www.unpac.me/results/4c39f456-282a-4b95-a54b-52a58788b45b/
SH256 hash:
2750ffe243fb5f9cd341ebbed73042418d76686b4d02781850a2af5a250096d1
MD5 hash:
ab16c39569e2c2d319610c31227a51d6
SHA1 hash:
054f2412e363bff0da1faa3d4a234596f5a8a50b
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/4c39f456-282a-4b95-a54b-52a58788b45b/
SH256 hash:
8ce199b5554f819cdbfb01bcfc00e08bdbe69340c14aa39829cb0f65b1a9eb03
MD5 hash:
7803d86c34f1d4d168542fb3781d330b
SHA1 hash:
90969adf903acc89ce3a61b570c3f9c06dee34ed
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/4c39f456-282a-4b95-a54b-52a58788b45b/
Parent samples :
2641d864d67844df7ceab8302836407bb07c23f8a8e1c7556212b35d4650db86
82f415c500ccb21a936a061f3ae04c255fee596102d783f91c7fcb6e2a7a1e8d
13d5f928a4a2b54818e4ac7e8a629e50536462929d5a338415a3618794120d11
8d8125ab11e71b1f93a499ebfcf39c91ad208f3260fa3a848188a0b39cba3898
Please note that we are no longer able to provide a coverage score for Virus Total.

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
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.

Cape
Cape
https://www.capesandbox.com/analysis/8756/

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 (HIGH_ENTROPY_VA)high

Comments