MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 79381309c066a4ff2476a0ac2801964f5a82c4f886b590f56e4cfc5ceb307040. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 79381309c066a4ff2476a0ac2801964f5a82c4f886b590f56e4cfc5ceb307040
SHA3-384 hash: 4ca6ec91a098a0c7ba7032b0fcab4dc4d9201b3c090e55635f2827fb4f5feba604e06aebb2175354dcd5735989638b74
SHA1 hash: 6d4efe018df36424c66b4a7337b2045fe2c8c03e
MD5 hash: 95a22e4bce7bd0a47c94cb47cb7e2d3a
humanhash: oranges-pennsylvania-potato-jersey
File name:prtprr.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:872'030 bytes
First seen:2024-12-10 12:11:11 UTC
Last seen:2024-12-16 13:06:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash aaaa8913c89c8aa4a5d93f06853894da (246 x Formbook, 82 x AgentTesla, 74 x RedLineStealer)
ssdeep 12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QLJoEanOS/H0Rvg/oh8qv60n:ffmMv6Ckr7Mny5QLJoEYOS/URvg/oY6
TLSH T15205C052F3D680B6D9A33975297BE327EB3575194323C4CBA7E02E778E111009B3A762
TrID 84.9% (.EXE) AutoIt3 compiled script executable (510622/80/67)
9.5% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
1.7% (.EXE) Win64 Executable (generic) (10522/11/4)
1.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
0.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
File icon (PE):PE icon
dhash icon b150b26869b2d471 (468 x Formbook, 101 x RedLineStealer, 94 x AgentTesla)
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
438
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
prtprr.exe
Verdict:
No threats detected
Analysis date:
2024-12-10 12:13:41 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/34678be9-5459-42e9-82e1-28dd15ecb746

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

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6758305548182d168557b00f
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context autoit compiled-script evasive findstr fingerprint keylogger lolbin microsoft_visual_cc overlay packed packed packer_detected wscript
Link:
https://www.filescan.io/uploads/675830d3d01d85612e8c3640/reports/d3beaf41-62eb-4f54-8ae8-7b8af12e49a5/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/79381309c066a4ff2476a0ac2801964f5a82c4f886b590f56e4cfc5ceb307040
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:
Malicious
Link:
https://analyze.intezer.com/analyses/fa290be9-01bf-4628-954c-c21d0a34cd5e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1572324
Signature
AI detected suspicious sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Found malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1572324 Sample: prtprr.exe Startdate: 10/12/2024 Architecture: WINDOWS Score: 100 30 www.ytsxv.xyz 2->30 32 www.ushihq.xyz 2->32 34 9 other IPs or domains 2->34 38 Suricata IDS alerts for network traffic 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 46 8 other signatures 2->46 11 prtprr.exe 2 2->11         started        signatures3 44 Performs DNS queries to domains with low reputation 32->44 process4 signatures5 56 Writes to foreign memory regions 11->56 58 Maps a DLL or memory area into another process 11->58 60 Switches to a custom stack to bypass stack traces 11->60 62 Contains functionality to detect sleep reduction / modifications 11->62 14 svchost.exe 11->14         started        process6 signatures7 64 Modifies the context of a thread in another process (thread injection) 14->64 66 Maps a DLL or memory area into another process 14->66 68 Sample uses process hollowing technique 14->68 70 3 other signatures 14->70 17 explorer.exe 66 1 14->17 injected process8 dnsIp9 28 www.ytsxv.xyz 66.29.133.226, 49772, 80 ADVANTAGECOMUS United States 17->28 36 System process connects to network (likely due to code injection or exploit) 17->36 21 cmd.exe 17->21         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 54 Switches to a custom stack to bypass stack traces 21->54 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Score:
95%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/79381309c066a4ff2476a0ac2801964f5a82c4f886b590f56e4cfc5ceb307040
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/79381309c066a4ff2476a0ac2801964f5a82c4f886b590f56e4cfc5ceb307040/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-12-10 01:06:26 UTC
File Type:
PE (Exe)
Extracted files:
29
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pe4bgcoam2sp6jdwucwcqamwj5nifrhyq22zb5lojt6fz2zqobaa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
admintool_powerrun
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:cl21 discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/241210-pc6htsvnfw/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/c525b418-3497-4a6c-a64c-02a2ddb0d27a
Unpacked files
SH256 hash:
faa5e03bda2478da00f976ec024fa456557771bcb39bbfdf229d9d3fb4132c37
MD5 hash:
31c777e8299f65e628867d7cd68a8fc5
SHA1 hash:
3a6d7d09e2f773611fde7c9bbf852ca84b41a1c1
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Link:
https://www.unpac.me/results/3e06f711-6a26-4b50-83f7-8fe6b6dd9f41/
Parent samples :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 hash:
53e23d560a4a0d53c1bbb5c4d7c3080c8accb07cf0a5173cda20a4a022b3c6b8
MD5 hash:
aebe9d951a8cecdde4008b67bb7b95ab
SHA1 hash:
5e3b6bda9efe79879f0b610f10e3201bed36534b
Link:
https://www.unpac.me/results/3e06f711-6a26-4b50-83f7-8fe6b6dd9f41/
SH256 hash:
79381309c066a4ff2476a0ac2801964f5a82c4f886b590f56e4cfc5ceb307040
MD5 hash:
95a22e4bce7bd0a47c94cb47cb7e2d3a
SHA1 hash:
6d4efe018df36424c66b4a7337b2045fe2c8c03e
Link:
https://www.unpac.me/results/3e06f711-6a26-4b50-83f7-8fe6b6dd9f41/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/79381309c066/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/79381309c066a4ff2476a0ac2801964f5a82c4f886b590f56e4cfc5ceb307040

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:AutoIt
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Description:AutoIT packer
Rule name:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Malspam

Formbook

r00 c2a893fe3b76c6ae4fcb393634fcff020de341a0dc7c48929ef78c0f8a32acf3

Formbook

Executable exe 79381309c066a4ff2476a0ac2801964f5a82c4f886b590f56e4cfc5ceb307040

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 c2a893fe3b76c6ae4fcb393634fcff020de341a0dc7c48929ef78c0f8a32acf3
  
Dropped by
MD5 00f6c3c871a9fe0699bb70bcd74262f5

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
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::CopySid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetAce
USER32.dll::GetUserObjectSecurity
ADVAPI32.dll::InitializeAcl
ADVAPI32.dll::InitializeSecurityDescriptor
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
ADVAPI32.dll::GetTokenInformation
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleA
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
KERNEL32.dll::CreateFileW
KERNEL32.dll::CreateFileA
KERNEL32.dll::DeleteFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_SVC_APICan Manipulate Windows ServicesADVAPI32.dll::OpenSCManagerW
ADVAPI32.dll::UnlockServiceDatabase
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

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