MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606. 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: 19


Intelligence 19 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606
SHA3-384 hash: 5932610fb5179a032d371ed34b0a62ab13ca7c3c62b84469ea43737f1270868d164fa8a96dd95cbd0fe4767f674b1673
SHA1 hash: 3c81d3f0cb79e79c0d1c2b1ee5d6fd575b7c7291
MD5 hash: 5b0c6ba3d9df638dbb44e25e31b6afe0
humanhash: arkansas-cardinal-johnny-sad
File name:Offer Nr. 35830.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:805'888 bytes
First seen:2025-09-11 04:40:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 12288:/KqOZQ8So50KVuEIlS/p1A2bStXSFaZf9J0SejZqwCJ1YAlyrzr4tEEcB:CRQu5jMEIYVOiF6FJ0UwChlyr42Ec
Threatray 1'057 similar samples on MalwareBazaar
TLSH T1AA05E0462F8DC9D9D0F2CAF50A33E1701E7C5E64AC52D1328ED53F9BF63E6509A025A2
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
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
112
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Offer Nr. 35830.exe
Verdict:
No threats detected
Analysis date:
2025-09-11 04:42:29 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f4989b7d-c889-4c60-a265-9480635e6eb4

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/26808/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.16721.2842.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68c252fc6e66ba602d7a3be4
Tags:
stration shell spawn
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 bitmap obfuscated packed packed reconnaissance roboski stego
Link:
https://www.filescan.io/uploads/68c25303dbc6f5a29c3f690d/reports/b9d13af2-f6f6-4d52-accc-0be1dc7e3d92/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-10T23:58:00Z UTC
Last seen:
2025-09-10T23:58:00Z UTC
Hits:
~1000
Detections:
HEUR:Trojan-PSW.MSIL.Agensla.gen Trojan.MSIL.Crypt.sb Trojan-Spy.Win32.Noon.sb Trojan.MSIL.Taskun.sb Trojan.MSIL.Inject.sb Trojan-Spy.Noon.HTTP.ServerRequest PDM:Trojan.Win32.Generic HEUR:Trojan.MSIL.Injector.gen Backdoor.Agent.HTTP.C&C
Link:
https://opentip.kaspersky.com/decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/06c36f6f-6d06-4002-96fc-963ce9810673
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1775294
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
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 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
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1775294 Sample: Offer Nr. 35830.exe Startdate: 11/09/2025 Architecture: WINDOWS Score: 100 38 www.west-tec.xyz 2->38 40 www.metricair.xyz 2->40 42 15 other IPs or domains 2->42 50 Multi AV Scanner detection for submitted file 2->50 52 Yara detected FormBook 2->52 54 Yara detected AntiVM3 2->54 58 5 other signatures 2->58 11 Offer Nr. 35830.exe 4 2->11         started        signatures3 56 Performs DNS queries to domains with low reputation 40->56 process4 file5 36 C:\Users\user\...\Offer Nr. 35830.exe.log, ASCII 11->36 dropped 68 Adds a directory exclusion to Windows Defender 11->68 15 Offer Nr. 35830.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 70 Maps a DLL or memory area into another process 15->70 20 LzB1JsUEY.exe 15->20 injected 72 Loading BitLocker PowerShell Module 18->72 22 conhost.exe 18->22         started        process9 process10 24 msdt.exe 13 20->24         started        signatures11 60 Tries to steal Mail credentials (via file / registry access) 24->60 62 Tries to harvest and steal browser information (history, passwords, etc) 24->62 64 Modifies the context of a thread in another process (thread injection) 24->64 66 2 other signatures 24->66 27 LIt0KedTxDFwKs.exe 24->27 injected 30 chrome.exe 24->30         started        32 firefox.exe 24->32         started        process12 dnsIp13 44 www.anitatoto.xyz 166.117.110.61, 49770, 49771, 49772 NSWPOLSERV-AS-APNewSouthWalesPoliceAU United States 27->44 46 www.west-tec.xyz 99.83.161.153, 49720, 49738, 49739 AMAZON-02US United States 27->46 48 9 other IPs or domains 27->48 34 WerFault.exe 4 30->34         started        process14
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2025-09-11 04:42:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
27 of 38 (71.05%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=33g3otv5npg7rzsjig3rpz4dbjabjeht2n2dptbbccx4xrsnmyda._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
4824c73de2a144d3e4fbca50cb9fe2a81dda794258c6c9de45caf3572d17e145
Formbook
515261ba7c77ffd970a3bb7e09d3f54fc5184d72ee48082fd3ac145f004f6e6e
Formbook
6a64a490df8bbc5569f98983a51a8383e8f6077c93af36c76a6d5c194ff8e5b3
Formbook
8c9fd9ea38c16b4b38039c60d03c499aff67451f6fcd00d56abd4c81a6f2c3c2
Formbook
b0be564eb26f9cf2f58ea450d43194f3a4fb7dd2ca16375e3ecbfd636e5e7c13
Formbook
b5f7ce31c9333182fd55674e84e7a60e21cfdc92cf6b3b7286be53923a03386c
Formbook
decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606
Formbook
e598b89b04fa29abdfdad5eca57c05401680597c5999160bc2963bcb5c2cf4f3
Formbook
ef621eb27cf38820b597be924cc1e9198b39a460150f862e4df651e6d3f09bc0
Formbook
error
Formbook
ffc8f79b6654ee83f5afac0fa12a5eeb666dc73b11d05c7fba51e7acab5928de
Formbook
+ 1'047 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250911-fbc1fsvpw4/
Behaviour
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
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/7fb306c8-df37-4498-8195-62d10edee96a
Unpacked files
SH256 hash:
decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606
MD5 hash:
5b0c6ba3d9df638dbb44e25e31b6afe0
SHA1 hash:
3c81d3f0cb79e79c0d1c2b1ee5d6fd575b7c7291
Link:
https://www.unpac.me/results/bfb7f5ce-573a-4b39-944e-b1cddc5fdcec/
SH256 hash:
12dda0cd3b378fbced3071df357733426bb09e47c31fcc3ba6273650f67895dc
MD5 hash:
773c55854eb467033abb78bc2b667f80
SHA1 hash:
54bfd694185cd257abb4ee6b477dba12b971b9b9
Link:
https://www.unpac.me/results/bfb7f5ce-573a-4b39-944e-b1cddc5fdcec/
SH256 hash:
090d644fd131e44eb97bca5cad3fe97d0d147eeab9b6f8d4307f43d5cb58806e
MD5 hash:
84412172b0fa5d4dab6dbe6441885bad
SHA1 hash:
7bb01e3eb4e8667dfd2c640b56cbba2b861965f6
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/bfb7f5ce-573a-4b39-944e-b1cddc5fdcec/
SH256 hash:
7c32c98bef725bb66a30f348652841de8102af19c65d34a52e65771ae09e38d1
MD5 hash:
74a92f932bad193caa26b82f16dad7b7
SHA1 hash:
ab4d3edcc4887ad24eceede964e1066e1eb04e76
Link:
https://www.unpac.me/results/bfb7f5ce-573a-4b39-944e-b1cddc5fdcec/
SH256 hash:
6abd49f27cffa2a20fcd5225b9e7a2e431fa9d28b1d83ad1aa60ac87c1bb199c
MD5 hash:
56708126fb9bafb327e833aee3013224
SHA1 hash:
1d377b9f77e303cab36fa0762d20256908991bb4
Link:
https://www.unpac.me/results/bfb7f5ce-573a-4b39-944e-b1cddc5fdcec/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/decdb74ebd6b/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/decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:NET
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.

Malspam

Formbook

Executable exe decdb74ebd6bcdf8e64941b717e7830a401490f3d37437cc2110afcbc64d6606

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/26808/

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