MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 837b7c72e06fc3e364b269d3e3e962370b670dd743856e7916b5cd27dc5b9901. 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 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 837b7c72e06fc3e364b269d3e3e962370b670dd743856e7916b5cd27dc5b9901
SHA3-384 hash: 566079d15cdb2ab695c71743eb2d583c8673d8becb6f6c629e208d07be209636ed497cccf76b63c50f79beddbd2ddb11
SHA1 hash: e55a52b5ce28a8eba4b69074af51cd4cdfa1b09a
MD5 hash: dbec4ad821c3f5df0eda3ec8b309894d
humanhash: happy-diet-island-green
File name:837b7c72e06fc3e364b269d3e3e962370b670dd743856e7916b5cd27dc5b9901
Download: download sample
Signature Formbook
Create hunting rule
File size:788'488 bytes
First seen:2025-09-05 12:38:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:7rBp2BWwpyBjMLeLvndMXaMxcBkdDz/rHscN:/eW4886vndlMWBkdDz1N
TLSH T1A3F412852766CE43C4F20BF05EB6D7B817B42D9EB820E3065EE9BDEB7C767441650282
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 adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
51
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
837b7c72e06fc3e364b269d3e3e962370b670dd743856e7916b5cd27dc5b9901
Verdict:
Malicious activity
Analysis date:
2025-09-05 15:22:26 UTC
Tags:
netreactor
Link:
https://app.any.run/tasks/0d8442a1-1419-450e-9704-7b6821716d3e

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/25378/
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68bad9d8eb163e0ec1847b12
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
invalid-signature obfuscated packed packed packer_detected signed
Link:
https://www.filescan.io/uploads/68badf2d37c25fcf12d4bdd8/reports/f73f2a2e-2f2f-46b4-9dba-366d6ae51166/overview
Verdict:
Malicious
Labled as:
Genie.8DN.Generic
Link:
https://www.hybrid-analysis.com/sample/837b7c72e06fc3e364b269d3e3e962370b670dd743856e7916b5cd27dc5b9901
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-08-14T04:52:00Z UTC
Last seen:
2025-08-14T04:52:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/837b7c72e06fc3e364b269d3e3e962370b670dd743856e7916b5cd27dc5b9901/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d2c28380-b8db-4922-a2d3-6458fc3bbbda
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/837b7c72e06fc3e364b269d3e3e962370b670dd743856e7916b5cd27dc5b9901
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.47 Win 32 Exe x86
Link:
https://app.malva.re/file/dbec4ad821c3f5df0eda3ec8b309894d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/837b7c72e06fc3e364b269d3e3e962370b670dd743856e7916b5cd27dc5b9901/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-08-14 11:32:01 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qn5xy4xan7b6gzfsnhj6h2lcg4fwodoxiocw46iwwxgspxc3teaq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250905-p9a37awry5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/363c7157-c090-4c3a-830c-b1107e58458e
Unpacked files
SH256 hash:
837b7c72e06fc3e364b269d3e3e962370b670dd743856e7916b5cd27dc5b9901
MD5 hash:
dbec4ad821c3f5df0eda3ec8b309894d
SHA1 hash:
e55a52b5ce28a8eba4b69074af51cd4cdfa1b09a
Link:
https://www.unpac.me/results/ef1c24a8-717d-4125-8359-beddbc032993/
SH256 hash:
7ad5f73cfaa94d981567140f61f512a753130f70d49f8e92731e3106b4f2b7b5
MD5 hash:
554dc2a07a4d75652b4c1a53a014fce8
SHA1 hash:
28d7c29590c5fa2309cada56572056b66fb94f39
Link:
https://www.unpac.me/results/ef1c24a8-717d-4125-8359-beddbc032993/
SH256 hash:
7790a6f03be8a3a150f12aa553c7c9f79173a9a1a855d9740074ed585836de12
MD5 hash:
859f08167df384f4c04fcf5148c16019
SHA1 hash:
2bbfaef6ffe19eac9a7a574dd972efb3e56f53e5
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/ef1c24a8-717d-4125-8359-beddbc032993/
SH256 hash:
460cf4c4d4cfe4b310e0c81d240e1bf2311b5476c4c91748a8d4d0e8ebcc59e4
MD5 hash:
19f12013706b3a92e6ae1046d91b6106
SHA1 hash:
949d1e523c477aa657705bace7391ba4df66a077
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/ef1c24a8-717d-4125-8359-beddbc032993/
Parent samples :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 hash:
32fdaea2b32c13c2b928b175e336b04dc2273108103440c6e5706421b2eec8ab
MD5 hash:
f77a619c8604c73740e89babf4d37d0d
SHA1 hash:
0e590db88e667465ce3b993e61208985bead8786
Link:
https://www.unpac.me/results/ef1c24a8-717d-4125-8359-beddbc032993/
Malware family:
zgRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/837b7c72e06f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/837b7c72e06fc3e364b269d3e3e962370b670dd743856e7916b5cd27dc5b9901

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:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

Cape
Cape
https://www.capesandbox.com/analysis/25378/

Comments