MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 57a78347375504df5a96e64875a08d287088b2392a4d69e0357f0ede1895b172. 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


Intelligence 17 IOCs YARA 4 File information Comments
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SHA256 hash: 57a78347375504df5a96e64875a08d287088b2392a4d69e0357f0ede1895b172
SHA3-384 hash: ba1d7ceb425b176d3a7a53f0d0bffedbef73248571ba0811e5be89ce3c1f27f4ae7c40d0467c0569746311db23ee4a5f
SHA1 hash: 8c1e4834df81da77f7765ebc431750353a5bcf9d
MD5 hash: e4c95a9654a8a1ffc9c2da8de3299258
humanhash: mississippi-batman-nitrogen-steak
File name:PO Contract pdf.exe
Download: download sample
Signature Formbook
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File size:787'968 bytes
First seen:2025-02-13 22:27:41 UTC
Last seen:2025-02-13 23:25:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'665 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:dMVUhEFIPAer9o1V7oXiNH6i5yFyMuU09Cq3InWoLZ/cRts:nPtr+gXiNH65d7Y3InWoLmRts
TLSH T1C0F4014A23EC0064E0FF5E74A6F822590B76B95BD932E36D04C422F81E71796E967373
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
File icon (PE):PE icon
dhash icon 32aa6abaaeecac51 (27 x SnakeKeylogger, 19 x Formbook, 4 x MassLogger)
Reporter BastianHein
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
625
Origin country :
CL CL
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
5bf98d0b5924fad554baf44e116b4f40dec7faa71aca872451997b9832bc104f
Verdict:
Malicious activity
Analysis date:
2025-02-10 12:16:17 UTC
Tags:
arch-exec formbook xloader stealer
Link:
https://app.any.run/tasks/23f6785e-9d7b-488e-9520-51c2f9eb0179

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.665.12544.UNOFFICIAL
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Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67ae720628ab76d43a5adcfb
Tags:
underscore virus remo smtp
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file
Moving of the original file
Unauthorized injection to a recently created process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
expand formbook keylogger lolbin obfuscated obfuscated obfuscated packed snake tracker vbnet
Link:
https://www.filescan.io/uploads/67ae7205991985e0a9588569/reports/cece693e-e359-4116-950c-3e0e3ff37d3f/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/57a78347375504df5a96e64875a08d287088b2392a4d69e0357f0ede1895b172
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:
Unknown
Link:
https://analyze.intezer.com/analyses/92f735dd-43ca-40c8-8c82-acb428c07239
Result
Threat name:
DarkTortilla, FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1614608
Signature
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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)
Moves itself to temp directory
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
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected DarkTortilla Crypter
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1614608 Sample: PO Contract   pdf.exe Startdate: 13/02/2025 Architecture: WINDOWS Score: 100 33 www.estrated.xyz 2->33 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Multi AV Scanner detection for submitted file 2->41 45 6 other signatures 2->45 12 PO Contract   pdf.exe 4 2->12         started        signatures3 43 Performs DNS queries to domains with low reputation 33->43 process4 file5 31 C:\Users\user\...\PO Contract   pdf.exe.log, ASCII 12->31 dropped 63 Moves itself to temp directory 12->63 65 Hides that the sample has been downloaded from the Internet (zone.identifier) 12->65 16 skype.exe 3 12->16         started        signatures6 process7 signatures8 35 Hides that the sample has been downloaded from the Internet (zone.identifier) 16->35 19 AddInProcess32.exe 16->19         started        process9 signatures10 47 Modifies the context of a thread in another process (thread injection) 19->47 49 Maps a DLL or memory area into another process 19->49 51 Sample uses process hollowing technique 19->51 53 4 other signatures 19->53 22 explorer.exe 12 1 19->22 injected process11 process12 24 raserver.exe 22->24         started        signatures13 55 Modifies the context of a thread in another process (thread injection) 24->55 57 Maps a DLL or memory area into another process 24->57 59 Tries to detect virtualization through RDTSC time measurements 24->59 61 Switches to a custom stack to bypass stack traces 24->61 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/57a78347375504df5a96e64875a08d287088b2392a4d69e0357f0ede1895b172
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/57a78347375504df5a96e64875a08d287088b2392a4d69e0357f0ede1895b172/
Threat name:
Win32.Trojan.Leonem
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Status:
Malicious
First seen:
2025-02-10 12:16:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
21
AV detection:
23 of 37 (62.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=k6tygrzxkucn6wuw4zehlienfbyirmrzfjgwtybvp4hn4gevwfza._file
Verdict:
malicious
Label(s):
formbook
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Similar samples:
error
Formbook
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:o10c discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250213-2dsdtaxke1/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Downloads MZ/PE file
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8e2a3286-fb1c-4446-9c97-a16c36ce001a
Unpacked files
SH256 hash:
57a78347375504df5a96e64875a08d287088b2392a4d69e0357f0ede1895b172
MD5 hash:
e4c95a9654a8a1ffc9c2da8de3299258
SHA1 hash:
8c1e4834df81da77f7765ebc431750353a5bcf9d
Link:
https://www.unpac.me/results/8078aed5-f8a4-47c5-8e21-f6c8743778b7/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/57a78347375504df5a96e64875a08d287088b2392a4d69e0357f0ede1895b172

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:NET
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Author:malware-lu
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments