MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ecdc4285745f04d5d3141f3668e48d5633849cf2594c0092e943d1e7ac5384d0. 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: | ecdc4285745f04d5d3141f3668e48d5633849cf2594c0092e943d1e7ac5384d0 |
|---|---|
| SHA3-384 hash: | 26d2dacf622dc07bb58009b1aa2519f5eb34dab0e189dc69b64130eb2de06df47c463d93f8576cf8ca4430115837c5fe |
| SHA1 hash: | 8e9967f3493e29cfb77597c86f825f8384f3400a |
| MD5 hash: | 09d4d202ad31f235146bcdb152dfd73f |
| humanhash: | august-river-hot-earth |
| File name: | Zahlungsavis Nr. A00902692 pdf.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'826'816 bytes |
| First seen: | 2025-10-13 15:47:33 UTC |
| Last seen: | 2025-11-06 10:21:24 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger) |
| ssdeep | 24576:WJzJkjdXFUG+LcaAH/2yCC2c0oidIWUL51hTLyKOho+8KT5dZ1c8:WO5G6p2cPidIWkTTmOKT5 |
| Threatray | 8 similar samples on MalwareBazaar |
| TLSH | T11385E1D0EEACA91BE47A6B39D0F3163007F8A4529E32EF4A085054D906537177DE26FB |
| 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 |  threatcat_ch |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
151
Origin country :
CHVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Zahlungsavis Nr. A00902692 pdf.exe
Verdict:
Malicious activity
Analysis date:
2025-10-13 15:50:11 UTC
Tags:
auto-startup netreactor
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Detection(s):
Verdict:
Malicious
Score:
70%
Tags:
underscore extens micro
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a file
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
base64 obfuscated packed reconnaissance
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-13T07:27:00Z UTC
Last seen:
2025-10-14T13:38:00Z UTC
Hits:
~1000
Detections:
VHO:Backdoor.Win32.Androm.gen Trojan-Spy.Win32.Noon.bnbc Trojan-Spy.Noon.HTTP.ServerRequest Trojan.MSIL.Agent.sb HEUR:Trojan.Win32.Generic Backdoor.Agent.HTTP.C&C Trojan-Spy.Win32.Noon.sb Trojan-PSW.Win32.Stealer.sb Trojan-PSW.MSIL.PureLogs.sb Trojan-PSW.MSIL.Agentb.sb Trojan.MSIL.Inject.sb Trojan.MSIL.Dnoper.sb
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook, PureLog Stealer, ResolverRAT
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Drops VBS files to the startup folder
Joe Sandbox ML detected suspicious sample
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: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Switches to a custom stack to bypass stack traces
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected FormBook
Yara detected PureLog Stealer
Yara detected ResolverRAT
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.23 Win 32 Exe x86
Verdict:
Malicious
Threat:
Family.FORMBOOK
Threat name:
Win32.Trojan.PurelogStealer
Status:
Malicious
First seen:
2025-10-13 15:49:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
20 of 24 (83.33%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
unc_loader_078
Similar samples:
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Drops startup file
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
19efdf03cb94895935225795f68bb9abfded1869687367013b8b4eee3cc99372
MD5 hash:
4e29f75c0c51b9dec76955f0382d9541
SHA1 hash:
4899aa8e3f57339cbaec8faab777897a76fe1c3a
SH256 hash:
4c3581bfbefb2e27028a56938d136ad83956702002a1f832230c5c1159225e21
MD5 hash:
2775e4e5d044407b7be50789b642bb95
SHA1 hash:
bdabd2e2d36fdfb0197ab4b6da2f7be23eda1b84
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
688f94cb36f205626b4313cfd9883f650e458d1f3a569b15bd8771c9e6c1a7ed
MD5 hash:
d28c8e381ae1449753f69770f2e94290
SHA1 hash:
cef3c08540b7f5089d24bf34fd74ddc9c4c79fe1
SH256 hash:
ecdc4285745f04d5d3141f3668e48d5633849cf2594c0092e943d1e7ac5384d0
MD5 hash:
09d4d202ad31f235146bcdb152dfd73f
SHA1 hash:
8e9967f3493e29cfb77597c86f825f8384f3400a
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: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | Formbook |
|---|---|
| Author: | kevoreilly |
| Description: | Formbook Payload |
| 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: | 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_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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