MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 f33c42a1488ff1ff6d6046cb550f2ee60ceb18b177c75dde15fec0fc976af648. 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: | f33c42a1488ff1ff6d6046cb550f2ee60ceb18b177c75dde15fec0fc976af648 |
|---|---|
| SHA3-384 hash: | cfe08b5fb0e6e5c284cb067f6207f3610f580887f0d5075b82e2b2dee06e2968738607b1c860294beb6f517cd4badca8 |
| SHA1 hash: | 121e9dfdffb7cd7db4327eeb851c239886719106 |
| MD5 hash: | 5e02a126f95a9636987011c0971db9a3 |
| humanhash: | uncle-batman-louisiana-mountain |
| File name: | z37ordemdecomprapdf.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'665'024 bytes |
| First seen: | 2025-03-11 13:30:07 UTC |
| Last seen: | 2025-03-11 14:25:28 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger) |
| ssdeep | 49152:RBQwgu7iO1POlr7R9FXjJBNAaBfH+l4xTBg:nQwtPsr79JTAat |
| Threatray | 2'259 similar samples on MalwareBazaar |
| TLSH | T19375E01127A5D667E3AE03B9F0E109208FB4D061F283D79B9B70D1F41CA7752ADC92A7 |
| 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 |  FXOLabs |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
651
Origin country :
BRVendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
z37ordemdecomprapdf.exe
Verdict:
Malicious activity
Analysis date:
2025-03-11 13:32:11 UTC
Tags:
formbook stealer xloader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Suspicious
Score:
50%
Tags:
autorun micro
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a file in the %AppData% directory
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Enabling autorun by creating a file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
expand explorer lolbin obfuscated packed packed packer_detected
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Suspicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Drops VBS files to the startup folder
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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 detect virtualization through RDTSC time measurements
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.PureLogStealer
Status:
Malicious
First seen:
2025-03-11 13:11:56 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
26 of 38 (68.42%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 2'249 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:ka18 discovery rat spyware stealer trojan
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Drops startup file
Formbook payload
Formbook
Formbook family
Suspicious use of NtCreateUserProcessOtherParentProcess
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
f33c42a1488ff1ff6d6046cb550f2ee60ceb18b177c75dde15fec0fc976af648
MD5 hash:
5e02a126f95a9636987011c0971db9a3
SHA1 hash:
121e9dfdffb7cd7db4327eeb851c239886719106
SH256 hash:
67329a7f879f69bcfab82ad6ef3f608ec9e8ad446723e3a59ca7770489878363
MD5 hash:
26e05a0d6149f57e92ba76dce2f16603
SHA1 hash:
2723f352142ad8f11dbc6c2176050b4da60a201d
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
8aee35e5116357b45ee4efed338da3a423346b45f386bd2d71c58fb9589d28ed
MD5 hash:
2d91242b2042fbf5b049014afc5e8264
SHA1 hash:
337fb862a109acb3bccbae24f359170e377167ce
SH256 hash:
e9872f529b462072d107a175cbc04d60ac5207f2b6dca1b338d0aedda20f26bd
MD5 hash:
001b1b22945734d8f6a7b413a1d68733
SHA1 hash:
3728101aa0b312b3a1228c5032cb3207352e4213
SH256 hash:
78f73e1734daa918b253517c75971fbb8df773a3d77d02a752e9a0ad1711a677
MD5 hash:
f9d2985aa1c41cca281321fffb5ed424
SHA1 hash:
3a7a58d2dcae2762882357ae34d372744b1dbb9d
SH256 hash:
81ac6070fd7c119842a26f7e0b67afd601449e951d5e0530516175f42e2a41c2
MD5 hash:
6cdbccd98c8de321737a6c1323056a47
SHA1 hash:
fb1450368440d6b8cc53b4a034a93438641fa6a2
Detections:
win_formbook_w0
win_formbook_g0
win_formbook_auto
FormBook
Windows_Trojan_Formbook
Formbook
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: | DebuggerException__SetConsoleCtrl |
|---|---|
| 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: | Formbook |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Formbook in memory |
| Reference: | internal research |
| 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: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| 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: | 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) |
| Rule name: | Windows_Trojan_Formbook |
|---|---|
| Author: | @malgamy12 |
| Rule name: | Windows_Trojan_Formbook_1112e116 |
|---|---|
| Author: | Elastic Security |
| Reference: | https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach |
| Rule name: | win_formbook_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.formbook. |
| Rule name: | win_formbook_w0 |
|---|---|
| Author: | @malgamy12 |
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
Delivery method
Distributed via e-mail attachment
Delivery method
Distributed via e-mail attachment
Delivery method
Distributed via e-mail attachment
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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