MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 eb91cd66e60f105d9c783da4d6d121b79906f4f2b702650ee444c262f16489d4. 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: 18
| SHA256 hash: | eb91cd66e60f105d9c783da4d6d121b79906f4f2b702650ee444c262f16489d4 |
|---|---|
| SHA3-384 hash: | b0540d64d4153b37d8f199679350538c3d3ba4eba11402f522e8fca0b502e2da8040cd7d9ea5882f489ad687c0f7f7fa |
| SHA1 hash: | 29ce10527e09b370407a8766fddf89b573ed1a5d |
| MD5 hash: | e996283e4a4a787ca2c560410ef8f6b5 |
| humanhash: | lake-vermont-five-six |
| File name: | eb91cd66e60f105d9c783da4d6d121b79906f4f2b702650ee444c262f16489d4 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'228'800 bytes |
| First seen: | 2025-12-04 15:19:58 UTC |
| Last seen: | 2025-12-08 16:01:14 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 1895460fffad9475fda0c84755ecfee1 (378 x Formbook, 117 x AgentTesla, 58 x a310Logger) |
| ssdeep | 24576:k5EmXFtKaL4/oFe5T9yyXYfP1ijXdannF2U6rls8hS:kPVt/LZeJbInQRan/gD |
| Threatray | 2'235 similar samples on MalwareBazaar |
| TLSH | T19A45BF0273D1C062FF9B92334B5AF6115BBC79260123AA1F13981DB9BE705B1563E7A3 |
| TrID | 40.3% (.EXE) Win64 Executable (generic) (10522/11/4) 19.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 17.2% (.EXE) Win32 Executable (generic) (4504/4/1) 7.7% (.EXE) OS/2 Executable (generic) (2029/13) 7.6% (.EXE) Generic Win/DOS Executable (2002/3) |
| Magika | pebin |
| Reporter |  adrian__luca |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
94
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
AutoIt
Details
AutoIt
extracted scripts and files
Malware family:
n/a
ID:
1
File name:
eb91cd66e60f105d9c783da4d6d121b79906f4f2b702650ee444c262f16489d4
Verdict:
Suspicious activity
Analysis date:
2025-12-04 15:19:29 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Detection(s):
Verdict:
Malicious
Score:
99.9%
Tags:
autorun autoit emotet
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-26T22:08:00Z UTC
Last seen:
2025-12-05T03:29:00Z UTC
Hits:
~100
Detections:
Trojan-Spy.Noon.HTTP.ServerRequest Trojan.Win32.Agent.sb PDM:Trojan.Win32.Generic Trojan-Spy.Win32.Noon.sb Trojan.Win32.Zenpak.sb Trojan.Win32.Strab.ztp Trojan.Win32.Auzenpak.sb Trojan-PSW.Win32.Stealer.sb Trojan-Dropper.Win32.Dorifel.sbd Backdoor.Agent.HTTP.C&C Trojan.Win32.Strab.sb Trojan.Win32.Inject.sb
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Verdict:
Malicious
Threat:
Family.FORMBOOK
Threat name:
Win32.Trojan.AutoitInject
Status:
Malicious
First seen:
2025-11-27 03:19:48 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
20 of 36 (55.56%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 2'225 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
Drops startup file
Executes dropped EXE
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
eb91cd66e60f105d9c783da4d6d121b79906f4f2b702650ee444c262f16489d4
MD5 hash:
e996283e4a4a787ca2c560410ef8f6b5
SHA1 hash:
29ce10527e09b370407a8766fddf89b573ed1a5d
Detections:
AutoIT_Compiled
AutoIT_Compiled
SH256 hash:
0a890db13c36b98361606759030ab6640e46abb09b133efc6527492d38f3b6a6
MD5 hash:
f7a44fdc7e09083ba22650ca45262d5e
SHA1 hash:
2235e991f6efe3b516e95620e545c524d800891f
Detections:
AutoIT_Compiled
SH256 hash:
ca0b897ffbe051b78be7d62d8a67f7de5cbde64da5b4ada0b374861e40d6c879
MD5 hash:
890b96b5019e28fdfe88ae32d5c607ee
SHA1 hash:
41eeed9cb16c8175be79ee8c614aff8b4d1aa1e3
SH256 hash:
de69e34de217d380887c505143c582ed07b110a61b493ef86890710d25550856
MD5 hash:
5c0d76ec8cd6706458fe1db496697cbc
SHA1 hash:
9aa0a7ca3ae9795b0ccb461d57f2b21aa712432f
Detections:
AutoIT_Compiled
SH256 hash:
f622b66c96d6ff0fc2632285f4eb0aa8d2c5e6055ca5ffc863c5b3ab749fa195
MD5 hash:
86d1ff87edb831bb9acfc56b978ace48
SHA1 hash:
84f3f9be9b25edb66cb32829c75926bfc8346728
Detections:
win_formbook_g0
SH256 hash:
eb91cd66e60f105d9c783da4d6d121b79906f4f2b702650ee444c262f16489d4
MD5 hash:
e996283e4a4a787ca2c560410ef8f6b5
SHA1 hash:
29ce10527e09b370407a8766fddf89b573ed1a5d
Detections:
AutoIT_Compiled
AutoIT_Compiled
SH256 hash:
4726eb363b41061c44ddd777ff944ea49cedb04ee3b2b3fdced2b021be4e8645
MD5 hash:
bbd181007ecc2fc6a78b838ca75bf903
SHA1 hash:
ef06d2f66b49ef3858c45e446cc507785911934a
SH256 hash:
c8cb5642959b46068f09e4e5842f9e95a52d966e5f5df61044ffd2b824a9f24e
MD5 hash:
3ed4fd5a807d45b0b232ebf0f5816d92
SHA1 hash:
d011af1cddac69afcf903d16b88ac278898cd7be
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: | AutoIT_Compiled |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious. |
| Rule name: | CP_Script_Inject_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| 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: | 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: | pe_detect_tls_callbacks |
|---|
| 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: | TH_Generic_MassHunt_Win_Malware_2025_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Generic Windows malware mass-hunt rule - 2025 |
| Reference: | https://cyfare.net/ |
| Rule name: | TH_Win_ETW_Bypass_2025_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Windows ETW Bypass Detection Rule - 2025 |
| Reference: | https://cyfare.net/ |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.