MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ad1f6b68331f1d4b983df1eddfea197f4a091e648528dc28c6016524b51d58b0. 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
GuLoader
Vendor detections: 16
| SHA256 hash: | ad1f6b68331f1d4b983df1eddfea197f4a091e648528dc28c6016524b51d58b0 |
|---|---|
| SHA3-384 hash: | 6fd040306186a62075f85223377c4e6525015763f12171a73033ac405e1aa8d24b38536d5e2c31c3bbf548827b971ff2 |
| SHA1 hash: | bf02949f07662158215776acbaac683b6959320e |
| MD5 hash: | 038aab3a1450ed01e0635bdb5b09c39c |
| humanhash: | snake-vegan-hydrogen-single |
| File name: | rPO-000172483.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 1'188'192 bytes |
| First seen: | 2024-10-30 13:30:06 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 3f91aceea750f765ef2ba5d9988e6a00 (45 x GuLoader, 9 x RemcosRAT, 7 x Loki) |
| ssdeep | 24576:h4nhDoAFmXsrvR1kSMEkaHnjZVhbBNF1lmZNXLGQ7WczkxFnfbP9u:h+hkbXsjQSME/1Vhb5kNXKQKczgI |
| Threatray | 107 similar samples on MalwareBazaar |
| TLSH | T10445232972A5C14BEA431B784EF7E7379A79FC102D21952773312B4D9D7128CEE8B260 |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10522/11/4) 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) |
| Magika | pebin |
| Reporter |  FXOLabs |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | aalandske |
|---|---|
| Issuer: | aalandske |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2024-09-28T00:33:15Z |
| Valid to: | 2027-09-28T00:33:15Z |
| Serial number: | 58513bb2d1fc9b4846a077cfa5f0b50cc8e794ff |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | ae126a18a8c6226f2b16e1afb593d7ca13da0ca9857bc9a739c6a87fc76f0886 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
430
Origin country :
BRVendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
nPO-000172483.lzh
Verdict:
Malicious activity
Analysis date:
2024-10-30 13:32:33 UTC
Tags:
arch-exec formbook stealer xloader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Verdict:
Malicious
Score:
90.2%
Tags:
shellcode exploit blic
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Creating a file
Searching for the window
Creating a file in the %temp% subdirectories
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
installer microsoft_visual_cc overlay packed
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
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:
Unknown
Result
Threat name:
FormBook, GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
76 / 100
Signature
AI detected suspicious sample
Malicious sample detected (through community Yara rule)
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Score:
99%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2024-10-30 12:34:38 UTC
File Type:
PE (Exe)
Extracted files:
11
AV detection:
19 of 24 (79.17%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 97 additional samples on MalwareBazaar
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
f917aef484d1fbb4d723b2e2d3045cb6f5f664e61fbb3d5c577bd1c215de55d9
MD5 hash:
d6f54d2cefdf58836805796f55bfc846
SHA1 hash:
b980addc1a755b968dd5799179d3b4f1c2de9d2d
SH256 hash:
ad1f6b68331f1d4b983df1eddfea197f4a091e648528dc28c6016524b51d58b0
MD5 hash:
038aab3a1450ed01e0635bdb5b09c39c
SHA1 hash:
bf02949f07662158215776acbaac683b6959320e
Malware family:
GuLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
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
| ID | Title | Severity |
|---|---|---|
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (HIGH_ENTROPY_VA) | high |
Reviews
| ID | Capabilities | Evidence |
|---|---|---|
| COM_BASE_API | Can Download & Execute components | ole32.dll::CoCreateInstance |
| SECURITY_BASE_API | Uses Security Base API | ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::SetFileSecurityW |
| SHELL_API | Manipulates System Shell | SHELL32.dll::ShellExecuteExW SHELL32.dll::SHFileOperationW SHELL32.dll::SHGetFileInfoW |
| WIN32_PROCESS_API | Can Create Process and Threads | KERNEL32.dll::CreateProcessW ADVAPI32.dll::OpenProcessToken KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetDiskFreeSpaceW KERNEL32.dll::GetCommandLineW |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::MoveFileW KERNEL32.dll::MoveFileExW |
| WIN_BASE_USER_API | Retrieves Account Information | ADVAPI32.dll::LookupPrivilegeValueW |
| WIN_REG_API | Can Manipulate Windows Registry | ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExW |
| WIN_USER_API | Performs GUI Actions | USER32.dll::AppendMenuW USER32.dll::EmptyClipboard USER32.dll::FindWindowExW USER32.dll::OpenClipboard USER32.dll::PeekMessageW USER32.dll::CreateWindowExW |
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