MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a16f87ede74f8f5cf4af54e78a69380979b1147a8302cd371d50947c4a0f0fe. 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: 20


Intelligence 20 IOCs YARA 8 File information Comments
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SHA256 hash: 4a16f87ede74f8f5cf4af54e78a69380979b1147a8302cd371d50947c4a0f0fe
SHA3-384 hash: 833297d74a0e34a414bb0acfba8ac87d27eceda56c419e55c6888eb65c93cff6433058eafaef5434aa129565cec82122
SHA1 hash: 30b45461b02c47202d3e53d422e6dd2a03f9a784
MD5 hash: 911975bbf09185224dcc9ac41aef0d79
humanhash: louisiana-whiskey-eleven-magnesium
File name:Scan 00089877676.pdf.scr
Download: download sample
Signature Formbook
Create hunting rule
File size:707'592 bytes
First seen:2024-09-05 10:25:28 UTC
Last seen:2024-09-05 13:21:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:PUx1UoIG5MPUYjD8mMj0z4vjIvlna0QDL2kq/wkQsu1FJeBsHvM7Sd2AN89kR:EUobyZH8K1wfGkqCsujJdHvMK8g
TLSH T179E4128436858A17D69E8E7EE0BA71105374FA276603F71E3DE138D92EF2BC20599713
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
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 lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
378
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Scan 00089877676.pdf.scr
Verdict:
Malicious activity
Analysis date:
2024-09-05 10:28:14 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/4bc8817c-d83b-458c-95d9-9a7b949c6e33

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.16017.14780.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d9873f8e12b8124ac94d5e
Tags:
Encryption Execution Generic Static Stealth Formbook
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook masquerade overlay packed vbnet
Link:
https://www.filescan.io/uploads/66d9873c362fc347739040f7/reports/70df49bb-2e7e-4830-b185-d6ddb694e057/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/4a16f87ede74f8f5cf4af54e78a69380979b1147a8302cd371d50947c4a0f0fe
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f688c785-f841-4b6a-aa26-6ef0f5746741
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1504759
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
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 submitted file
Query firmware table information (likely to detect VMs)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: CMSTP Execution Process Creation
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1504759 Sample: Scan 00089877676.pdf.scr.exe Startdate: 05/09/2024 Architecture: WINDOWS Score: 100 38 www.ropertiesforrentfr.bond 2->38 40 www.oomed.shop 2->40 42 3 other IPs or domains 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for URL or domain 2->48 50 12 other signatures 2->50 11 Scan 00089877676.pdf.scr.exe 4 2->11         started        signatures3 process4 file5 36 C:\Users\...\Scan 00089877676.pdf.scr.exe.log, ASCII 11->36 dropped 60 Writes to foreign memory regions 11->60 62 Allocates memory in foreign processes 11->62 64 Adds a directory exclusion to Windows Defender 11->64 66 Injects a PE file into a foreign processes 11->66 15 RegSvcs.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 70 Modifies the context of a thread in another process (thread injection) 15->70 72 Maps a DLL or memory area into another process 15->72 74 Sample uses process hollowing technique 15->74 78 3 other signatures 15->78 20 explorer.exe 28 1 15->20 injected 76 Loading BitLocker PowerShell Module 18->76 22 conhost.exe 18->22         started        process9 process10 24 cmstp.exe 20->24         started        27 WerFault.exe 21 20->27         started        signatures11 52 Modifies the context of a thread in another process (thread injection) 24->52 54 Maps a DLL or memory area into another process 24->54 56 Tries to detect virtualization through RDTSC time measurements 24->56 58 Switches to a custom stack to bypass stack traces 24->58 29 explorer.exe 24->29         started        32 cmd.exe 1 24->32         started        process12 signatures13 68 Query firmware table information (likely to detect VMs) 29->68 34 conhost.exe 32->34         started        process14
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4a16f87ede74f8f5cf4af54e78a69380979b1147a8302cd371d50947c4a0f0fe
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4a16f87ede74f8f5cf4af54e78a69380979b1147a8302cd371d50947c4a0f0fe/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
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Status:
Malicious
First seen:
2024-09-05 10:26:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jilpq7w6ot4plt2k6vhhrjutqclzwekhvayczu3r2ueuprfa6d7a._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:m49z discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/240905-mghw8aycjj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ecbb4f48-1c88-4959-8f17-4cbf084d7a82
Unpacked files
SH256 hash:
cc21fb5176f80fe8675dc53593d7d5f16c9281b8cbd4c27d57efec1a0cf8c7ca
MD5 hash:
ab19ef006b00391a9f0a2bcd6504bdf1
SHA1 hash:
11bb9760e7f3ee292467327ae5a2c3f22748f4a4
Detections:
FormBook
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/a2405236-36f3-4144-b946-eba7402efbe8/
Parent samples :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 hash:
150c6e7de31574a3dc8c09d743987ec2c43c9bd0e6aecbf91042722359e3adc0
MD5 hash:
48815524d9fe314ab98f8df0b182908f
SHA1 hash:
a0e4dded97841cded11dce2a1b84670be882f22c
Link:
https://www.unpac.me/results/a2405236-36f3-4144-b946-eba7402efbe8/
SH256 hash:
55fc7c7c863ffd70168e8089c971b94cca1e7dfb55b3ff77710f9fa9c1838bc8
MD5 hash:
4ae6a24c7b90fb0056871cd4c3cf50ad
SHA1 hash:
79d5417e24cbb649db594dcfd7703dd02158654b
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/a2405236-36f3-4144-b946-eba7402efbe8/
SH256 hash:
4a16f87ede74f8f5cf4af54e78a69380979b1147a8302cd371d50947c4a0f0fe
MD5 hash:
911975bbf09185224dcc9ac41aef0d79
SHA1 hash:
30b45461b02c47202d3e53d422e6dd2a03f9a784
Link:
https://www.unpac.me/results/a2405236-36f3-4144-b946-eba7402efbe8/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4a16f87ede74/report/overview.html
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/4a16f87ede74f8f5cf4af54e78a69380979b1147a8302cd371d50947c4a0f0fe

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe 4a16f87ede74f8f5cf4af54e78a69380979b1147a8302cd371d50947c4a0f0fe

(this sample)

  
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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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