MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8ca8c891e95359312e0a42f1f00fe42eefb662f66a61715ead3865d27fbe27e8. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8ca8c891e95359312e0a42f1f00fe42eefb662f66a61715ead3865d27fbe27e8
SHA3-384 hash: 8599cf693f8dd133921ab43d6ac667e81331aad8f845118c20931e945ed4ddb217f1c8f70ce153034e6d2fa4feb74cb4
SHA1 hash: 87037c76bc789909d49fa81887ce8465436f3ca0
MD5 hash: 93616677d7d1ebbfb979b905150bb3cd
humanhash: pip-ohio-utah-connecticut
File name:waybillDoc_20052024.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:554'552 bytes
First seen:2024-05-22 07:16:14 UTC
Last seen:2024-05-22 08:18:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ced282d9b261d1462772017fe2f6972b (127 x Formbook, 113 x GuLoader, 70 x RemcosRAT)
ssdeep 12288:iH7MMIqb9BVAG8ITBF8qgvpnu1uo6c1yZODqCNtEplW8LmP:C7a69BVxh65K6+drGlW8LmP
Threatray 604 similar samples on MalwareBazaar
TLSH T1E6C4F1D23A90D07BF25596304DF2DEBDFBB4BC502A410B1732A0776E397BA418A196CD
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon b170f0a4cce86400 (2 x Formbook, 1 x GuLoader)
Reporter activatedalmond
Tags:exe FormBook signed

Code Signing Certificate

Organisation:Dissevering
Issuer:Dissevering
Algorithm:sha256WithRSAEncryption
Valid from:2023-06-24T05:27:01Z
Valid to:2026-06-23T05:27:01Z
Serial number: 48d8dd39277c193cb6402991aeda34404d69a5c9
Thumbprint Algorithm:SHA256
Thumbprint: 5f649fd6cb514a5a7c979d2742f2df890265e1c8455b3369a499dd1bb8371e2d
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
336
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
8ca8c891e95359312e0a42f1f00fe42eefb662f66a61715ead3865d27fbe27e8.exe
Verdict:
Malicious activity
Analysis date:
2024-05-22 07:21:35 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4fec739a-65db-4eef-b3fb-25d775de8b0c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Zum.Androm.1.1011.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=664d9bd0e9e4e4d009e8857ewin10vpnfull_triage
Tags:
Encryption Execution Generic Network Static Stealth Malware
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file
Creating a file in the %temp% subdirectories
Launching a process
Changing a file
Running batch commands
Using the Windows Management Instrumentation requests
Creating a process from a recently created file
Unauthorized injection to a recently created process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
guloader installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/664d9bf5c19b369e29fbd0b9/reports/7377ec99-59ee-4bbd-8153-142c37e5ccce/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/8ca8c891e95359312e0a42f1f00fe42eefb662f66a61715ead3865d27fbe27e8
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/70235ebf-8eeb-4a25-a83e-bec8205b8cf9
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1445569
Signature
AI detected suspicious sample
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Found suspicious powershell code related to unpacking or dynamic code loading
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
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 dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell drops PE file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1445569 Sample: waybillDoc_20052024.exe Startdate: 22/05/2024 Architecture: WINDOWS Score: 100 51 www.vegus24.org 2->51 53 www.maerealtysg.com 2->53 55 8 other IPs or domains 2->55 81 Malicious sample detected (through community Yara rule) 2->81 83 Antivirus detection for URL or domain 2->83 85 Multi AV Scanner detection for submitted file 2->85 87 4 other signatures 2->87 11 waybillDoc_20052024.exe 1 36 2->11         started        signatures3 process4 file5 45 C:\Users\user\AppData\Local\...\nsDialogs.dll, PE32 11->45 dropped 47 C:\Users\user\AppData\Local\...\Samkrt.ska, ASCII 11->47 dropped 99 Suspicious powershell command line found 11->99 15 powershell.exe 20 11->15         started        signatures6 process7 file8 49 C:\Users\user\AppData\...\Disfranchising.exe, PE32 15->49 dropped 65 Obfuscated command line found 15->65 67 Writes to foreign memory regions 15->67 69 Sample uses process hollowing technique 15->69 71 3 other signatures 15->71 19 Disfranchising.exe 2 7 15->19         started        23 conhost.exe 15->23         started        25 cmd.exe 1 15->25         started        signatures9 process10 dnsIp11 57 elchupetedemark.com 82.98.176.12, 443, 49753, 49755 DINAHOSTING-ASES Spain 19->57 89 Multi AV Scanner detection for dropped file 19->89 91 Maps a DLL or memory area into another process 19->91 93 Hides threads from debuggers 19->93 27 MgXUodIxwmGyQi.exe 19->27 injected 30 cmd.exe 1 19->30         started        signatures12 process13 signatures14 97 Found direct / indirect Syscall (likely to bypass EDR) 27->97 32 fc.exe 13 27->32         started        35 conhost.exe 30->35         started        37 reg.exe 1 1 30->37         started        process15 signatures16 73 Tries to steal Mail credentials (via file / registry access) 32->73 75 Tries to harvest and steal browser information (history, passwords, etc) 32->75 77 Modifies the context of a thread in another process (thread injection) 32->77 79 2 other signatures 32->79 39 MgXUodIxwmGyQi.exe 32->39 injected 43 firefox.exe 32->43         started        process17 dnsIp18 59 parkingpage.namecheap.com 91.195.240.19, 49775, 49776, 49777 SEDO-ASDE Germany 39->59 61 www.holein1sa.com 213.171.195.105, 49771, 49772, 49773 ONEANDONE-ASBrauerstrasse48DE United Kingdom 39->61 63 3 other IPs or domains 39->63 95 Found direct / indirect Syscall (likely to bypass EDR) 39->95 signatures19
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8ca8c891e95359312e0a42f1f00fe42eefb662f66a61715ead3865d27fbe27e8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8ca8c891e95359312e0a42f1f00fe42eefb662f66a61715ead3865d27fbe27e8/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2024-05-20 07:18:33 UTC
File Type:
PE (Exe)
Extracted files:
18
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rsumrepjknmtclqkily7ad7ef3x3myxwnjqxcxvnhbs5e756e7ua._file
Verdict:
malicious
Similar samples:
083a3fd47e58d83c6a4265bcb00f93d30cc2901d6637ae9648411e83d3ad5017
Formbook
121dae49dacf1290b5ef4de577a01161b523d9edf8564fa765e7c00ac6c3b862
Formbook
23ecba0be777d9b7a5683d0939d9ae17c4427c46e51ff959e91785d83c60efd1
Formbook
28e90ac25cc8dcdb8b16cb3403e695b191965e3bfc1f832fcd412177633852d4
Formbook
49ffcfe176de375dbbb2e4d50043d80fa254ca6b4ffc6d18d9501b6d8841a436
Formbook
71f72ce2762a449ca22338ff1035ba11b86ea974f39b7779eba2a8c480b1893e
Formbook
d4a027269ca7a78f578e980333ac22f8ab39d5f4ef71490b49af6cb884195321
Formbook
e8c869ce645ed191a49065b3b51790b0d502f7045e9040aefdef98d697e47caf
Formbook
+ 594 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
execution persistence
Link:
https://tria.ge/reports/240522-h4dhssgb4s/
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2e5159af-c2cb-4106-b13f-06aaa1e43106
Unpacked files
SH256 hash:
8780095aa2f49725388cddf00d79a74e85c9c4863b366f55c39c606a5fb8440c
MD5 hash:
1c8b2b40c642e8b5a5b3ff102796fb37
SHA1 hash:
3245f55afac50f775eb53fd6d14abb7fe523393d
Link:
https://www.unpac.me/results/e4397f1c-3683-4851-b1c3-05b26e924afa/
SH256 hash:
114c6941a8b489416c84563e94fd266ea5cad2b518db45cd977f1f9761e00cb1
MD5 hash:
09c2e27c626d6f33018b8a34d3d98cb6
SHA1 hash:
8d6bf50218c8f201f06ecf98ca73b74752a2e453
Link:
https://www.unpac.me/results/e4397f1c-3683-4851-b1c3-05b26e924afa/
SH256 hash:
8ca8c891e95359312e0a42f1f00fe42eefb662f66a61715ead3865d27fbe27e8
MD5 hash:
93616677d7d1ebbfb979b905150bb3cd
SHA1 hash:
87037c76bc789909d49fa81887ce8465436f3ca0
Link:
https://www.unpac.me/results/e4397f1c-3683-4851-b1c3-05b26e924afa/
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/8ca8c891e95359312e0a42f1f00fe42eefb662f66a61715ead3865d27fbe27e8

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:NSIS_April_2024
Create hunting rule
Author:NDA0N
Description:Detects NSIS installers
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits

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_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::SetFileSecurityA
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExA
SHELL32.dll::SHFileOperationA
SHELL32.dll::SHGetFileInfoA
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessA
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExA
KERNEL32.dll::GetDiskFreeSpaceA
KERNEL32.dll::GetCommandLineA
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileA
KERNEL32.dll::CreateDirectoryA
KERNEL32.dll::CreateFileA
KERNEL32.dll::DeleteFileA
KERNEL32.dll::MoveFileExA
KERNEL32.dll::MoveFileA
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueA
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExA
ADVAPI32.dll::RegDeleteKeyA
ADVAPI32.dll::RegOpenKeyExA
ADVAPI32.dll::RegQueryValueExA
ADVAPI32.dll::RegSetValueExA
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuA
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExA
USER32.dll::OpenClipboard
USER32.dll::PeekMessageA
USER32.dll::CreateWindowExA

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