MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8cb2a5be00820d9731c732644df61f53e89b7d49dc9a4e9bcf88e80b5e3d7465. 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: 14
| SHA256 hash: | 8cb2a5be00820d9731c732644df61f53e89b7d49dc9a4e9bcf88e80b5e3d7465 |
|---|---|
| SHA3-384 hash: | b2e46b9efe1c23bb76e4f3fa8f229e9e1876e76c4633eaad5a9af1802a96d5e4764331881815694647e0e71f46269da9 |
| SHA1 hash: | bc1966640a16105e9c3c232b1ac90f44e6186e3d |
| MD5 hash: | 368a51e5b9c12449743fd5f890954b54 |
| humanhash: | eleven-grey-steak-summer |
| File name: | 8cb2a5be00820d9731c732644df61f53e89b7d49dc9a4e9bcf88e80b5e3d7465 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 835'584 bytes |
| First seen: | 2025-07-07 14:46:29 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger) |
| ssdeep | 24576:A888493n3be+FmmSDcPV34dDQIOhatP7DQF+8:X8883KKmmqcNId1guZ |
| Threatray | 3'996 similar samples on MalwareBazaar |
| TLSH | T10F0501017795DC03DAAA0BF44D31D3B252B2ADAD7551C307DDE87CEBB48A36818922DB |
| 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 | 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer) |
| Reporter |  adrian__luca |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
22
Origin country :
HUVendor Threat Intelligence
Detection:
Formbook
Verdict:
Malicious
Score:
99.1%
Tags:
virus shell msil
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
Sending a custom TCP request
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Labled as:
Trojan.Generic
Malware family:
Agent Tesla
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Status:
Malicious
First seen:
2025-06-24 03:54:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
24 of 38 (63.16%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
unc_loader_037
Similar samples:
+ 3'986 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
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
Unpacked files
SH256 hash:
8cb2a5be00820d9731c732644df61f53e89b7d49dc9a4e9bcf88e80b5e3d7465
MD5 hash:
368a51e5b9c12449743fd5f890954b54
SHA1 hash:
bc1966640a16105e9c3c232b1ac90f44e6186e3d
SH256 hash:
0e0d2204096aba4301cedc29f820391db91478ba61331726b7e628273a53c669
MD5 hash:
12e63d1e05603831659394581c05b22d
SHA1 hash:
00b88687a9a5a7f2e612277d69d43f8c7e038a04
SH256 hash:
783f2bc71259209f2ceeb9e97fd465ed13a50148b43d67568224fa0fe30ba9d0
MD5 hash:
f0f472a83ed9f1e5be0f68ee2492bb30
SHA1 hash:
c96bd445836c1cbe8fa52b799710e5423ec4218d
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
e60f9316d57d29f10fd160059e3fcc35a66249576aaf2e7e97c726f3a920bfe7
MD5 hash:
dba8246cf2fee2d927c4b5564badd788
SHA1 hash:
d3ddeafc8a5d40f3974819a1cc65a67d2dc4c45c
SH256 hash:
b089d63574927e20a3e6d5983cb3a902620733e4d03c2bc3beebcceb42bc7970
MD5 hash:
0519493ccb52ef986bf7bc399325d04f
SHA1 hash:
a1e0ec05f79d7e30be35e98dc95b03c66c4c8349
SH256 hash:
98d33fc01120929b9e5cf2f5e69ec9d952bbe64fba89d12e288a31bc05703c1f
MD5 hash:
efecf8e214bf484f7c39883b79496f5b
SHA1 hash:
1971e6ccf9bdf53c487d40d4b371decf18ff919a
Detections:
win_formbook_g0
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | DebuggerCheck__GlobalFlags |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerHiding__Active |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerHiding__Thread |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | dgaagas |
|---|---|
| Author: | Harshit |
| Description: | Uses certutil.exe to download a file named test.txt |
| Rule name: | Formbook |
|---|---|
| Author: | kevoreilly |
| Description: | Formbook Payload |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
| Rule name: | RIPEMD160_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for RIPEMD-160 constants |
| Rule name: | SEH__vectored |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | SHA1_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA1 constants |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| 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.
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
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (HIGH_ENTROPY_VA) | high |
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