MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cab82749acbaf6bab5ad3c2bb077bac408ae9d1e798e54b8599ca2ce12c88311. 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: cab82749acbaf6bab5ad3c2bb077bac408ae9d1e798e54b8599ca2ce12c88311
SHA3-384 hash: 527899100b5e39c8cc85519cb4ca374ffc74166fcc3c1b98bb08df29eee9a495b71965553c545de72dbd3b1749160825
SHA1 hash: cf18c9c1bec25f6e1e146b168ec217e86e2e05c5
MD5 hash: 6bf6b6f516e2901ad68322683c0c2905
humanhash: fish-queen-emma-triple
File name:Offer Nr. 35830.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:762'880 bytes
First seen:2025-09-15 09:15:24 UTC
Last seen:2025-10-10 06:28:00 UTC
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:KbDXcTLEeW1CJ1jc1javM9AfvwR6vFK1pnPI/0fUdycBg0dxwvrID6fKqOZQ8:KbDXAfaCJ14nPR69KXTfQlBg0TgrIGi+
Threatray 1'132 similar samples on MalwareBazaar
TLSH T1DEF402251329DA06E1621FB11972E3B80B75BFE9F812D707CFD57EDFB8366A14805282
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
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
123
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
123040015.eml
Verdict:
Suspicious activity
Analysis date:
2025-09-13 07:52:50 UTC
Tags:
attachments attc-arch arch-exec
Link:
https://app.any.run/tasks/993104a0-dba8-4659-862b-4fb6ffcb0ad3

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/27522/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.18566.5196.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68c7d960e579c633a4b558dd
Tags:
shell virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
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/68c7da0f73287948292a42b7/reports/f6895629-d51b-476c-bd8c-a3556b6f7495/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/cab82749acbaf6bab5ad3c2bb077bac408ae9d1e798e54b8599ca2ce12c88311
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-12T08:49:00Z UTC
Last seen:
2025-09-12T08:49:00Z UTC
Hits:
~1000
Detections:
Trojan.MSIL.Taskun.sb Trojan.MSIL.Inject.sb HEUR:Trojan.MSIL.Taskun.gen VHO:Trojan-PSW.MSIL.Agensla.gen PDM:Trojan.Win32.Generic HEUR:Trojan.MSIL.Injector.gen
Link:
https://opentip.kaspersky.com/cab82749acbaf6bab5ad3c2bb077bac408ae9d1e798e54b8599ca2ce12c88311/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7500d609-da5c-47cf-af26-d2ee011ad488
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1777650
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
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
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 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
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)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1777650 Sample: Offer Nr. 35830.exe Startdate: 15/09/2025 Architecture: WINDOWS Score: 100 38 www.sushimeme.xyz 2->38 40 www.stevelynchguitar.xyz 2->40 42 16 other IPs or domains 2->42 50 Suricata IDS alerts for network traffic 2->50 52 Antivirus detection for URL or domain 2->52 54 Antivirus / Scanner detection for submitted sample 2->54 58 8 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 70 Injects a PE file into a foreign processes 11->70 15 Offer Nr. 35830.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 72 Maps a DLL or memory area into another process 15->72 20 f7D70BdwhN9H.exe 15->20 injected 74 Loading BitLocker PowerShell Module 18->74 22 conhost.exe 18->22         started        process9 process10 24 charmap.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 3 other signatures 24->66 27 PazWJD9Pwajt.exe 24->27 injected 30 chrome.exe 24->30         started        32 firefox.exe 24->32         started        process12 dnsIp13 44 quadcorps.services 15.197.225.128, 49720, 49721, 49722 TANDEMUS United States 27->44 46 www.zeytra.life 162.0.239.7, 49696, 49697, 49698 NAMECHEAP-NETUS Canada 27->46 48 10 other IPs or domains 27->48 34 WerFault.exe 4 30->34         started        process14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/cab82749acbaf6bab5ad3c2bb077bac408ae9d1e798e54b8599ca2ce12c88311
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.28 Win 32 Exe x86
Link:
https://app.malva.re/file/6bf6b6f516e2901ad68322683c0c2905
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cab82749acbaf6bab5ad3c2bb077bac408ae9d1e798e54b8599ca2ce12c88311/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/cab82749acbaf6bab5ad3c2bb077bac408ae9d1e798e54b8599ca2ce12c88311
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-09-12 15:26:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zk4cosnmxl3lvnnnhqv3a552yqek5hi6pghfjocztsrm4ewiqmiq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
1da6708a65f8dfe0c3359c8aa3fd07387c7aed37af8c66e5a5a0893aab14f547
Formbook
1f9e0b93f46f8d3a082b8504b723df366b34fe38c093dbf910660a259ee1761d
Formbook
38c7e35b5c3ffd6988ed96a7edf1bfab263257f08740550324500b7f776e0de1
Formbook
5c14649f341b72c153a02cc99d0852f7b0ded81f67a6513af7d188dfdce5a53e
Formbook
7e2f600443bbc2848ee277e188f5b7095d6c203d8e023a84224ba8dbb3532234
Formbook
9100b0b6f9841dac7febdc66401cf61fccd63f126fa6769945c5505575f00cd9
Formbook
a4e1ceb8458e0bca4119adb33ded5b1ef154f0ba69594b2079fbbcfb48cbe4ce
Formbook
e087ef304badb09dbb8b38a88337c5e2d4a0d3fc174d75817e622fdd8f5a6722
Formbook
e1fe0b9026bf4452a4f6d0a21af6c38e151fe5f1a8c6b547074798c25915456f
Formbook
error
Formbook
+ 1'122 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/250915-k9nl3ahj2t/
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/bc5bc545-f8b2-4042-aa0c-a00fadb600ad
Unpacked files
SH256 hash:
cab82749acbaf6bab5ad3c2bb077bac408ae9d1e798e54b8599ca2ce12c88311
MD5 hash:
6bf6b6f516e2901ad68322683c0c2905
SHA1 hash:
cf18c9c1bec25f6e1e146b168ec217e86e2e05c5
Link:
https://www.unpac.me/results/b0717c9a-5bf2-45c0-8fd4-936cdbc51f69/
SH256 hash:
36724b12d91a6fa2ac5df47fa325f3dfb8aab23e814133d6481cfc0d461a198c
MD5 hash:
8944c570ec2fdd28d743564e1eaa2c1f
SHA1 hash:
158f6535f27d13a4481fa3ab4314ffb72df0f6e2
Link:
https://www.unpac.me/results/b0717c9a-5bf2-45c0-8fd4-936cdbc51f69/
SH256 hash:
12dda0cd3b378fbced3071df357733426bb09e47c31fcc3ba6273650f67895dc
MD5 hash:
773c55854eb467033abb78bc2b667f80
SHA1 hash:
54bfd694185cd257abb4ee6b477dba12b971b9b9
Link:
https://www.unpac.me/results/b0717c9a-5bf2-45c0-8fd4-936cdbc51f69/
SH256 hash:
319c55e5de20096b3d81934f35082982aad533de44844bd99f162b775fa65c04
MD5 hash:
4f67af7f56db4a28b72c3b3a0d3899df
SHA1 hash:
bb56630326df69d494c0a80753fda3f223d16fb5
Link:
https://www.unpac.me/results/b0717c9a-5bf2-45c0-8fd4-936cdbc51f69/
SH256 hash:
9eef8d7dc1017bd1c2d3bde69f1762e17424d548552f3ee5ff374d29598c948b
MD5 hash:
fe24ddf34aadf9766d4f09a91ec51107
SHA1 hash:
d53217d3cef517dbf7a50a2c7fe3bff66b66256b
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/b0717c9a-5bf2-45c0-8fd4-936cdbc51f69/
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/cab82749acbaf6bab5ad3c2bb077bac408ae9d1e798e54b8599ca2ce12c88311

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 cab82749acbaf6bab5ad3c2bb077bac408ae9d1e798e54b8599ca2ce12c88311

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/27522/

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