MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 d83cc0c50b7b9c3848da02234fc6ab322a67d7943fcbc2db1d61cf96dc36f8b6. 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: | d83cc0c50b7b9c3848da02234fc6ab322a67d7943fcbc2db1d61cf96dc36f8b6 |
|---|---|
| SHA3-384 hash: | e54297adfaefe5429738e1d83fc088abbad63a414da9bf0709e18f77061779848814f5094415ba482086a1e5ae6124cd |
| SHA1 hash: | 376e286eb50ea6523e7e4a9e7aa2ae2e09baec93 |
| MD5 hash: | 55edcf88a746129904fa620357a37531 |
| humanhash: | double-oklahoma-twenty-maine |
| File name: | SKM-83290167200.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'339'392 bytes |
| First seen: | 2025-07-04 02:44:48 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 0b768923437678ce375719e30b21693e (143 x Formbook, 25 x MassLogger, 22 x SnakeKeylogger) |
| ssdeep | 24576:W5EmXFtKaL4/oFe5T9yyXYfP1ijXdapzBOhZr6WhlmPLadJrB:WPVt/LZeJbInQRapzBOymkar |
| Threatray | 5'320 similar samples on MalwareBazaar |
| TLSH | T12D55CF0273D1C062FFAB92334B5AF6115ABD79260123AA2F13981D79FD701B1563E7A3 |
| 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 |
| dhash icon | aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla) |
| Reporter |  threatcat_ch |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
36
Origin country :
CHVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
tmp3ae6qro_
Verdict:
Malicious activity
Analysis date:
2025-07-05 02:22:31 UTC
Tags:
auto-startup
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Detection(s):
Verdict:
Malicious
Score:
97.4%
Tags:
autorun autoit emotet
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Sending a custom TCP request
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit compiled-script fingerprint keylogger microsoft_visual_cc obfuscated packed packed
Verdict:
Malicious
Labled as:
Trojan.BAT.Agent.gen
Malware family:
Formbook
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PE (Portable Executable) Suspect Win 32 Exe x86
Verdict:
Malicious
Threat:
Win32.Backdoor.FormBook
Threat name:
Win32.Backdoor.FormBook
Status:
Malicious
First seen:
2025-07-04 02:08:33 UTC
AV detection:
17 of 38 (44.74%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
unc_loader_036
formbook
Similar samples:
+ 5'310 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
Drops startup file
Executes dropped EXE
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
d83cc0c50b7b9c3848da02234fc6ab322a67d7943fcbc2db1d61cf96dc36f8b6
MD5 hash:
55edcf88a746129904fa620357a37531
SHA1 hash:
376e286eb50ea6523e7e4a9e7aa2ae2e09baec93
SH256 hash:
069bb99c7665454ecc6f0188fe8b739809958103fafeccbd4ad8f6504f9898f1
MD5 hash:
4352ddfb737b9fb8465f79858b5bb8b4
SHA1 hash:
0dec5ad3a6426ca5c1361ab859372eb63ddaec83
SH256 hash:
8cdae851ab52139fbbd26d276181f8b1167eae5b201c3320a84b91745d8c8fcd
MD5 hash:
27385a5f6e00875e271fb8ad5970be56
SHA1 hash:
df1e98bc248d504f0abf49ba1fd87a0b15af41e4
Detections:
win_formbook_g0
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
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: | 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: | 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.
Malspam
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 (HIGH_ENTROPY_VA) | high |
| CHECK_NX | Missing Non-Executable Memory Protection | critical |
Reviews
| ID | Capabilities | Evidence |
|---|---|---|
| AUTH_API | Manipulates User Authorization | ADVAPI32.dll::AllocateAndInitializeSid ADVAPI32.dll::CopySid ADVAPI32.dll::FreeSid ADVAPI32.dll::GetLengthSid ADVAPI32.dll::GetTokenInformation ADVAPI32.dll::GetAce |
| COM_BASE_API | Can Download & Execute components | ole32.dll::CLSIDFromProgID ole32.dll::CoCreateInstance ole32.dll::CoCreateInstanceEx ole32.dll::CoInitializeSecurity ole32.dll::CreateStreamOnHGlobal |
| MULTIMEDIA_API | Can Play Multimedia | WINMM.dll::mciSendStringW WINMM.dll::timeGetTime WINMM.dll::waveOutSetVolume |
| SECURITY_BASE_API | Uses Security Base API | ADVAPI32.dll::AddAce ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::CheckTokenMembership ADVAPI32.dll::DuplicateTokenEx ADVAPI32.dll::GetAclInformation ADVAPI32.dll::GetSecurityDescriptorDacl |
| SHELL_API | Manipulates System Shell | SHELL32.dll::ShellExecuteExW SHELL32.dll::ShellExecuteW SHELL32.dll::SHFileOperationW |
| WIN32_PROCESS_API | Can Create Process and Threads | ADVAPI32.dll::CreateProcessAsUserW KERNEL32.dll::CreateProcessW ADVAPI32.dll::CreateProcessWithLogonW KERNEL32.dll::OpenProcess ADVAPI32.dll::OpenProcessToken ADVAPI32.dll::OpenThreadToken |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::TerminateProcess KERNEL32.dll::SetSystemPowerState KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryExW KERNEL32.dll::LoadLibraryW KERNEL32.dll::GetDriveTypeW |
| WIN_BASE_EXEC_API | Can Execute other programs | KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleCP KERNEL32.dll::GetConsoleMode |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CopyFileExW KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateHardLinkW IPHLPAPI.DLL::IcmpCreateFile KERNEL32.dll::CreateFileW |
| WIN_BASE_USER_API | Retrieves Account Information | KERNEL32.dll::GetComputerNameW ADVAPI32.dll::GetUserNameW ADVAPI32.dll::LogonUserW ADVAPI32.dll::LookupPrivilegeValueW |
| WIN_NETWORK_API | Supports Windows Networking | MPR.dll::WNetAddConnection2W MPR.dll::WNetUseConnectionW |
| WIN_REG_API | Can Manipulate Windows Registry | ADVAPI32.dll::RegConnectRegistryW ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExW |
| WIN_USER_API | Performs GUI Actions | USER32.dll::BlockInput USER32.dll::CloseDesktop USER32.dll::CreateMenu USER32.dll::EmptyClipboard USER32.dll::FindWindowExW USER32.dll::FindWindowW |
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