MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8d278608d1d1c4c5b6c048020c23351e75203066af1ae1e63c5c5ac0170cd3de. 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 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8d278608d1d1c4c5b6c048020c23351e75203066af1ae1e63c5c5ac0170cd3de
SHA3-384 hash: 0998136caaba8adca7e61daf0f62d808daf7d74416e879311b5f4e7d3b5f51ff925ec487a372ace2699bdcb2aeb8e1e3
SHA1 hash: d829b9e1e99087d94f527f359184f65b608190c5
MD5 hash: 5e8e7dd95b3e592a44a3c61b7f8d91f8
humanhash: charlie-east-pluto-vermont
File name:101 2043 5770 pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:2'148'960 bytes
First seen:2024-08-30 05:24:06 UTC
Last seen:2024-08-30 06:18:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 0a6d80c5b45dc9232fe72a993ca3e0d3 (2 x Formbook, 1 x AgentTesla, 1 x SnakeKeylogger)
ssdeep 49152:tl2eQMj254Xra+qk6okjyjxKtyEAqVG13lwUWQdHt:76euw
Threatray 22 similar samples on MalwareBazaar
TLSH T1F6A5BE14E3A801A8E867D738CA659333D67079524731E58F0A9DD6462F73E92AF7F302
TrID 47.1% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
35.2% (.EXE) InstallShield setup (43053/19/16)
8.6% (.EXE) Win64 Executable (generic) (10523/12/4)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.6% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
File icon (PE):PE icon
dhash icon e0e4a3a6a4b8b8a8 (37 x Formbook, 9 x AZORult, 9 x Loki)
Reporter adm1n_usa32
Tags:exe FormBook signed

Code Signing Certificate

Organisation:Microsoft Code Signing PCA 2011
Issuer:Microsoft Code Signing PCA 2011
Algorithm:sha256WithRSAEncryption
Valid from:2024-08-29T14:43:43Z
Valid to:2025-08-29T14:43:43Z
Serial number: 59ed6e3cf8a78799fef5c8b64e40d627
Thumbprint Algorithm:SHA256
Thumbprint: 2faa4f6ccd3bd61aaa0c50a81c9db4590444fafa2a87752257d6bbb2a3e14e4a
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
469
Origin country :
RO RO
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
101 2043 5770 pdf.exe
Verdict:
Malicious activity
Analysis date:
2024-08-30 05:25:49 UTC
Tags:
stealer formbook xloader
Link:
https://app.any.run/tasks/7587098b-25a5-4291-b870-067eb0e7ef60

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.Evo-gen.19503.24984.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d1573afe69a9e56049ec54
Tags:
Encryption Execution Network Static Stealth Swotter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file
Launching a process
Launching the process to change network settings
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Launching cmd.exe command interpreter
Creating a file in the %temp% directory
Searching for synchronization primitives
Creating a window
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
fingerprint hacktool lolbin microsoft_visual_cc overlay packed regedit remote shell32
Link:
https://www.filescan.io/uploads/66d157b45959a837dd12aff6/reports/4e040854-908f-4778-ad69-f5a8b81509fc/overview
Verdict:
Malicious
Labled as:
Win64/GenKryptik.HAYP trojan
Link:
https://www.hybrid-analysis.com/sample/8d278608d1d1c4c5b6c048020c23351e75203066af1ae1e63c5c5ac0170cd3de
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:
Suspicious
Link:
https://analyze.intezer.com/analyses/dd601c95-0f79-442a-a90d-22355ef4b488
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1501602
Signature
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
Detected FormBook malware
Drops PE files to the user root directory
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Reads the DNS cache
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Steal Google chrome login data
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to resolve many domain names, but no domain seems valid
Tries to steal Mail credentials (via file / registry access)
Uses ipconfig to lookup or modify the Windows network settings
Uses regedit.exe to modify the Windows registry
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1501602 Sample: 101 2043 5770 pdf.exe Startdate: 30/08/2024 Architecture: WINDOWS Score: 100 77 www.mrawkward.xyz 2->77 79 www.icvp5o.xyz 2->79 81 11 other IPs or domains 2->81 85 Multi AV Scanner detection for domain / URL 2->85 87 Suricata IDS alerts for network traffic 2->87 89 Found malware configuration 2->89 93 16 other signatures 2->93 11 101 2043 5770 pdf.exe 1 3 2->11         started        signatures3 91 Performs DNS queries to domains with low reputation 79->91 process4 file5 71 C:\Users\user\101 2043 5770 pdf.exe, PE32+ 11->71 dropped 107 Writes to foreign memory regions 11->107 109 Allocates memory in foreign processes 11->109 111 Adds a directory exclusion to Windows Defender 11->111 113 2 other signatures 11->113 15 csc.exe 11->15         started        18 powershell.exe 22 11->18         started        20 conhost.exe 11->20         started        22 wmplayer.exe 11->22         started        signatures6 process7 signatures8 117 Modifies the context of a thread in another process (thread injection) 15->117 119 Maps a DLL or memory area into another process 15->119 121 Sample uses process hollowing technique 15->121 125 3 other signatures 15->125 24 explorer.exe 73 2 15->24 injected 123 Loading BitLocker PowerShell Module 18->123 28 conhost.exe 18->28         started        process9 dnsIp10 83 www.landfillequip.com 204.11.56.48, 49725, 49726, 80 CONFLUENCE-NETWORK-INCVG Virgin Islands (BRITISH) 24->83 95 Uses ipconfig to lookup or modify the Windows network settings 24->95 30 ipconfig.exe 18 24->30         started        34 101 2043 5770 pdf.exe 24->34         started        36 101 2043 5770 pdf.exe 2 24->36         started        38 cmmon32.exe 24->38         started        signatures11 process12 file13 73 C:\Users\user\AppData\...\J8Alogrv.ini, data 30->73 dropped 75 C:\Users\user\AppData\...\J8Alogri.ini, data 30->75 dropped 127 Detected FormBook malware 30->127 129 Tries to steal Mail credentials (via file / registry access) 30->129 131 Tries to harvest and steal browser information (history, passwords, etc) 30->131 145 4 other signatures 30->145 40 cmd.exe 2 30->40         started        44 firefox.exe 30->44         started        133 Writes to foreign memory regions 34->133 135 Allocates memory in foreign processes 34->135 137 Adds a directory exclusion to Windows Defender 34->137 46 wmplayer.exe 34->46         started        48 powershell.exe 34->48         started        56 2 other processes 34->56 139 Sample uses process hollowing technique 36->139 141 Injects a PE file into a foreign processes 36->141 50 iexplore.exe 36->50         started        52 powershell.exe 36->52         started        54 conhost.exe 36->54         started        58 4 other processes 36->58 143 Tries to detect virtualization through RDTSC time measurements 38->143 signatures14 process15 file16 69 C:\Users\user\AppData\Local\Temp\DB1, SQLite 40->69 dropped 97 Tries to harvest and steal browser information (history, passwords, etc) 40->97 60 conhost.exe 40->60         started        99 Modifies the context of a thread in another process (thread injection) 46->99 101 Maps a DLL or memory area into another process 46->101 103 Sample uses process hollowing technique 46->103 62 raserver.exe 46->62         started        65 conhost.exe 48->65         started        105 Loading BitLocker PowerShell Module 52->105 67 conhost.exe 52->67         started        signatures17 process18 signatures19 115 Tries to detect virtualization through RDTSC time measurements 62->115
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8d278608d1d1c4c5b6c048020c23351e75203066af1ae1e63c5c5ac0170cd3de
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8d278608d1d1c4c5b6c048020c23351e75203066af1ae1e63c5c5ac0170cd3de/
Threat name:
Win64.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-08-30 00:18:42 UTC
File Type:
PE+ (Exe)
Extracted files:
17
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rutymcgr2hcmlnwajabayizvdz2samdgv4nodzr4lrnmafym2ppa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0371d6e1e7638e52af5cdef7265500ebd3426a0e3754afcf0b4f431d30f2025c
Formbook
08b07b63633d2eba94040bd8e878525018fba9c354cfece62bd750e0ad7cc4a9
Formbook
4990d4c5600664a439e09e9eea416eee51d021284bc8fba006aa3bebbfb11175
Formbook
6012722bb5136e7dfcc33763ccd5ec5c2024a1904f928c5c75b8160b13b6ecc9
Formbook
d183ff97ac5c70dbbabbc93155f02398dd1ad1bc5dbe9d3f72722bd6d0c189da
Formbook
+ 12 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:kmge credential_access discovery execution persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/240830-f4ae2aybmf/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Credentials from Password Stores: Credentials from Web Browsers
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/714b4d9e-85b3-4b08-8f0e-ffd6d24083ae
Unpacked files
SH256 hash:
8d278608d1d1c4c5b6c048020c23351e75203066af1ae1e63c5c5ac0170cd3de
MD5 hash:
5e8e7dd95b3e592a44a3c61b7f8d91f8
SHA1 hash:
d829b9e1e99087d94f527f359184f65b608190c5
Link:
https://www.unpac.me/results/c108529d-a7e9-433c-a1c4-b0e6ec01e4c3/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8d278608d1d1/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/8d278608d1d1c4c5b6c048020c23351e75203066af1ae1e63c5c5ac0170cd3de

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__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:Jupyter_infostealer
Create hunting rule
Author:CD_R0M_
Description:Rule for Jupyter Infostealer/Solarmarker malware from september 2021-December 2022
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

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

Malspam

FormBook

xz e5d97a568f1962694316e3ac3f5120e1c2aae9d6c6a16f2b9cceed793b4377b4

Formbook

Executable exe 8d278608d1d1c4c5b6c048020c23351e75203066af1ae1e63c5c5ac0170cd3de

(this sample)

  
Dropped by
SHA256 e5d97a568f1962694316e3ac3f5120e1c2aae9d6c6a16f2b9cceed793b4377b4
  
Dropped by
MD5 5c3df6dd010f21668ac83b8f7d0e4f91

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_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high
Reviews
IDCapabilitiesEvidence
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::OpenProcess
KERNEL32.dll::VirtualAllocExNuma
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThreadpoolIo
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetSystemInfo
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::FreeConsole
KERNEL32.dll::GetConsoleWindow
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_BCRYPT_APICan Encrypt Filesbcrypt.dll::BCryptDestroyKey
bcrypt.dll::BCryptGenerateSymmetricKey
bcrypt.dll::BCryptGenRandom
bcrypt.dll::BCryptOpenAlgorithmProvider
bcrypt.dll::BCryptCloseAlgorithmProvider
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW

Comments