MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 f5d798da1badf02fe91c0a25702a09036570cc883128c676ba1cbc00a5381fdd. 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: 13
| SHA256 hash: | f5d798da1badf02fe91c0a25702a09036570cc883128c676ba1cbc00a5381fdd |
|---|---|
| SHA3-384 hash: | 43f5555fd841a2fe2e541f5b7e5b7d4963651de2c85302219420aa50ecd17797c00a4c551232c3ae62fcc0c4c7bb5f70 |
| SHA1 hash: | e415d2b1ff9e2095c5487b47ec47a9651286d415 |
| MD5 hash: | 4a7a9da9b5d246c23e12315e4eac1fcd |
| humanhash: | arkansas-mike-wisconsin-finch |
| File name: | po# 348839.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 379'506 bytes |
| First seen: | 2023-09-18 04:01:17 UTC |
| Last seen: | 2023-09-18 04:40:36 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader) |
| ssdeep | 6144:FYa606Qa9cP9uuG74TcI03yjX+XPkW+FNshLQ6etKBwLEGHtzRMt8n3xi4NL:FYGt5lg4V0gX+sLN2e0BwLVzmMo4NL |
| Threatray | 167 similar samples on MalwareBazaar |
| TLSH | T1F88412E433B14453F8BA5671473A5B221BE56D3A51B1936F23B07B463EB2BE2C80D790 |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4505/5/1) |
| File icon (PE): |  |
| dhash icon | d2e8ecb2b2a2b282 (106 x AgentTesla, 106 x Formbook, 24 x RedLineStealer) |
| Reporter |  JAMESWT_WT |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
308
Origin country :
ITVendor Threat Intelligence
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Unauthorized injection to a recently created process by context flags manipulation
Gathering data
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
control lolbin overlay packed shell32
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
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.
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook, NSISDropper
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for 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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Znyonm
Status:
Malicious
First seen:
2023-09-17 23:09:52 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 23 (91.30%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 157 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
n/a
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Unpacked files
SH256 hash:
82b8157f234ee51c7b3510caaaad043643b9b8ca35179435c32d71b0e50264cd
MD5 hash:
eae3479f64e26fc2b53ef5f68c0180ce
SHA1 hash:
b651101691291d13c9c42531e111988b3e554cdc
Detections:
win_formbook_w0
win_formbook_auto
win_formbook_g0
SH256 hash:
958fc3dc4aa087f5be62ad196b2e035a1d129da08ec4e0fa56c6c2fd4451d0e5
MD5 hash:
f00afce759a84c9f4bec31dba11712b9
SHA1 hash:
648075cbd73534b55e7ea24672b1fcd55daa8bd0
SH256 hash:
5df14180ec85b54f1f6c12526541eb8efdd05fdeb30cb2c49bcfb12fc67d1c82
MD5 hash:
61e36b917f2d78732dbfec6126481df1
SHA1 hash:
535cbfe4c347219b4c1aeea3f5ee43084a924beb
SH256 hash:
f5d798da1badf02fe91c0a25702a09036570cc883128c676ba1cbc00a5381fdd
MD5 hash:
4a7a9da9b5d246c23e12315e4eac1fcd
SHA1 hash:
e415d2b1ff9e2095c5487b47ec47a9651286d415
Malware family:
XLoader
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: | maldoc_find_kernel32_base_method_1 |
|---|---|
| Author: | Didier Stevens (https://DidierStevens.com) |
| Rule name: | maldoc_getEIP_method_1 |
|---|---|
| Author: | Didier Stevens (https://DidierStevens.com) |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | meth_get_eip |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| 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: | Windows_Trojan_Formbook |
|---|---|
| Author: | @malgamy12 |
| Rule name: | Windows_Trojan_Formbook_1112e116 |
|---|---|
| Author: | Elastic Security |
| 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.
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