MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1ac77b641f98af7d2d5f052af2721c8154b8c922be31ea7914ea76bd8c6d17c1. 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: 18


Intelligence 18 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1ac77b641f98af7d2d5f052af2721c8154b8c922be31ea7914ea76bd8c6d17c1
SHA3-384 hash: 10ca9a43cf4e0f5ab78c50d3598b2bf18b54049e1867e087e6b0b95d3cb8768f3682470d4ac968a8ed9dab7503af4c9c
SHA1 hash: ddaec29b4f7dc71f6826aebd845e81c30dd09146
MD5 hash: bacaf023d27109a446220e48b7a1c60e
humanhash: nebraska-equal-bulldog-alanine
File name:PAYMENT COPY.PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:660'488 bytes
First seen:2024-08-26 06:25:26 UTC
Last seen:2024-08-26 07:29:28 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'451 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:ycvIGc21SUSSRsyVjLu77HUd4DNFP5V4mHlcOH97OEWzm/WejH7xWsXWHWY6jRGc:fx4o2yVjC77m4DNB5V4mHlcW9yEzvX1f
TLSH T16EE4E0D03B3AA70ADE615A359268DEB682F11D64B004B9F729DC3B4774DD221AE0CF47
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
File icon (PE):PE icon
dhash icon 686470d9cccc71b2 (3 x Formbook, 3 x RedLineStealer, 1 x Smoke Loader)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
412
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PAYMENT COPY.PDF.exe
Verdict:
Malicious activity
Analysis date:
2024-08-26 06:25:55 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/eed317bd-bf1c-4490-b3f3-ce06bfdca868

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2548.27193.6854.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66cc1ffce7ff3f5a063bfa5f
Tags:
Encryption Execution Network Static Stealth Agent
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
Forced shutdown of a system process
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/1ac77b641f98af7d2d5f052af2721c8154b8c922be31ea7914ea76bd8c6d17c1
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6ddcc47f-b3aa-444d-bca7-9ce91c77bbe3
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1498886
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Double Extension File Execution
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
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: 1498886 Sample: PAYMENT COPY.PDF.exe Startdate: 26/08/2024 Architecture: WINDOWS Score: 100 33 www.weetindulgencepro.xyz 2->33 35 www.zesuteta.shop 2->35 37 10 other IPs or domains 2->37 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for submitted file 2->43 47 12 other signatures 2->47 11 PAYMENT COPY.PDF.exe 4 2->11         started        signatures3 45 Performs DNS queries to domains with low reputation 33->45 process4 file5 31 C:\Users\user\...\PAYMENT COPY.PDF.exe.log, ASCII 11->31 dropped 57 Writes to foreign memory regions 11->57 59 Allocates memory in foreign processes 11->59 61 Adds a directory exclusion to Windows Defender 11->61 63 Injects a PE file into a foreign processes 11->63 15 RegSvcs.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 73 3 other signatures 15->73 20 explorer.exe 98 1 15->20 injected 71 Loading BitLocker PowerShell Module 18->71 22 conhost.exe 18->22         started        process9 process10 24 mstsc.exe 20->24         started        signatures11 49 Modifies the context of a thread in another process (thread injection) 24->49 51 Maps a DLL or memory area into another process 24->51 53 Tries to detect virtualization through RDTSC time measurements 24->53 55 Switches to a custom stack to bypass stack traces 24->55 27 cmd.exe 1 24->27         started        process12 process13 29 conhost.exe 27->29         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/1ac77b641f98af7d2d5f052af2721c8154b8c922be31ea7914ea76bd8c6d17c1
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1ac77b641f98af7d2d5f052af2721c8154b8c922be31ea7914ea76bd8c6d17c1/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-08-26 02:12:27 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dldxwza7tcxx2lk7auvpe4q4qfklrsjcxyy6u6iu5j3l3ddnc7aq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:m49z discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/240826-g663fs1ekp/
Behaviour
Gathers network information
Modifies registry class
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/51cb59cd-d780-49ce-9cd6-705863ab9e91
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/03e90b14-aa00-488f-ab1e-dc51d7593e0e/
Parent samples :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 hash:
c12f3c01c0a2a675e059744025d3752db566c4bdacc83421df4dbb406745b519
MD5 hash:
08c8b0aca7d53ee16fe2315a885e8f2e
SHA1 hash:
d5e3451e813288d9e2347671491d733a8fea0756
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/03e90b14-aa00-488f-ab1e-dc51d7593e0e/
SH256 hash:
379148dd85047d5d4fe425b3d6511af328b29954c8b65f75530d4664857eb595
MD5 hash:
3c66de8c98f1d2c93af505b3710a834e
SHA1 hash:
a49c90d424e0c10d5605c5521ee79fb9f3f59f18
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/03e90b14-aa00-488f-ab1e-dc51d7593e0e/
Parent samples :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 hash:
2db31706083955a1ce7efdb91380c2b67c4c7b1a46337a625354e3f3734ad5c0
MD5 hash:
06338e1b7a6979de4fb685ed3ab5c811
SHA1 hash:
031da6346e05787d5d8aeb03482a343ec7967342
Link:
https://www.unpac.me/results/03e90b14-aa00-488f-ab1e-dc51d7593e0e/
SH256 hash:
1ac77b641f98af7d2d5f052af2721c8154b8c922be31ea7914ea76bd8c6d17c1
MD5 hash:
bacaf023d27109a446220e48b7a1c60e
SHA1 hash:
ddaec29b4f7dc71f6826aebd845e81c30dd09146
Link:
https://www.unpac.me/results/03e90b14-aa00-488f-ab1e-dc51d7593e0e/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1ac77b641f98/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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:NETexecutableMicrosoft
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 1ac77b641f98af7d2d5f052af2721c8154b8c922be31ea7914ea76bd8c6d17c1

(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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