MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 394052f1b64477e13f76845563cb611aaeb78fc8a153f262ec44326c9606d2c0. 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: 17
| SHA256 hash: | 394052f1b64477e13f76845563cb611aaeb78fc8a153f262ec44326c9606d2c0 |
|---|---|
| SHA3-384 hash: | 51cf2530402775efff032e7422efa47e6a8f26cdb6e3f682cf1bece5978a0ebc8ef2ab1127e054bd4c4df5c7dfa1b65f |
| SHA1 hash: | 5bc9f17c0c98208f6c8bca03aba4563b0d47e30d |
| MD5 hash: | 1626b8a936bd7b80f8e9099a2cf14c35 |
| humanhash: | sad-football-eighteen-lactose |
| File name: | SecuriteInfo.com.Trojan.Siggen31.49234.8226.7767 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 735'744 bytes |
| First seen: | 2025-08-12 19:22:56 UTC |
| Last seen: | 2025-09-05 12:25:23 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 12288:rrLOygygkpexlR2UXygp/Oz0vrIF5LAjHA+tHLFLdkMzDJKvHiwbNhwxcFR4J:r2yFpeXR2op/i0jIbLsgsxTzdo7hgSR |
| Threatray | 133 similar samples on MalwareBazaar |
| TLSH | T142F412400A599A17C8BA1BB20872D27C17B9BD9EE111E30B0FD5FCDF3836B94195278B |
| 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 |  SecuriteInfoCom |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
3
# of downloads :
65
Origin country :
FRVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
_394052f1b64477e13f76845563cb611aaeb78fc8a153f262ec44326c9606d2c0.exe
Verdict:
No threats detected
Analysis date:
2025-08-12 20:04:00 UTC
Tags:
netreactor
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Verdict:
Malicious
Score:
70.0%
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a 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)
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
base64 bitmap lolbin msbuild obfuscated packed packed reconnaissance regsvcs rezer0 roboski schtasks stego vbc zero
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Malware family:
Agent Tesla
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Gathering data
Verdict:
Malicious
Threat:
Trojan-Spy.MSIL.BPLogger
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Status:
Malicious
First seen:
2025-08-12 12:42:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
19 of 24 (79.17%)
Threat level:
2/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
unc_loader_037
Similar samples:
+ 123 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook discovery rat spyware stealer trojan
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
Unpacked files
SH256 hash:
394052f1b64477e13f76845563cb611aaeb78fc8a153f262ec44326c9606d2c0
MD5 hash:
1626b8a936bd7b80f8e9099a2cf14c35
SHA1 hash:
5bc9f17c0c98208f6c8bca03aba4563b0d47e30d
SH256 hash:
c026a8fdde4352e6873940aaf0f19e1a52db368b5e5a844dee1a04cedf2aa3c8
MD5 hash:
3bb94b4d2f837275b02b0cc55e68e729
SHA1 hash:
31367d2745fdecd78ddc50f7767b5ccba5156443
SH256 hash:
929f07dc02c773e4bd51ce7405e2bc3d8460b0b2c3315875d7dc00a3c4814745
MD5 hash:
9a5507d165f8688348dad24bf793a9f9
SHA1 hash:
6cf4b8abe496742a573302805565bad9df84d1e8
SH256 hash:
b0c2bb5917e107e9501f8758b791b925d0a9003ba7e17250037a8de8f58fd200
MD5 hash:
0e74b4afa10b1da14f5fc189bce01e80
SHA1 hash:
6e5b8748b634dc737496d74f6694ac72caab42c7
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
e21bb750ddb31aefb5cf045caeeb8f8844c9a084fd26fa0e7f16aa76d2d90be2
MD5 hash:
519eca4b28bedda8c3dfc697b678c76f
SHA1 hash:
e03ab6c5f3b681a9d64a60395ce62884f0429209
Detections:
win_formbook_g0
Malware family:
FormBook
Verdict:
Malicious
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: | 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 (GUARD_CF) | high |
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