MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cff42a20c90a525f62cf6c71c7362a9b94765f00f25c29faa20f2a0d67090ba8. 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: 15


Intelligence 15 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cff42a20c90a525f62cf6c71c7362a9b94765f00f25c29faa20f2a0d67090ba8
SHA3-384 hash: 76126260596d506f5d44aee0a5447d1bc09928a6e1f23a5b8708ae9774f6728f728113014237a3e8ed6d551b2ce45828
SHA1 hash: 91e1270fc52b760ff2913f2db910f78c6051b74d
MD5 hash: 4c906f03f8cbdcd7c66a15f6c8498330
humanhash: zulu-virginia-saturn-five
File name:Benefit_Signature_Plan#3762.com
Download: download sample
Signature GuLoader
Create hunting rule
File size:513'346 bytes
First seen:2024-09-12 19:00:29 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (527 x GuLoader, 110 x RemcosRAT, 80 x EpsilonStealer)
ssdeep 12288:pbZxvzlLYN4fYSq7UpiiArc3mYAR27YAC1/:xZxpflpiFymHR2bI
TLSH T144B4CF91A241D4D9E42751B0DD3ECAF0218BBE5FD5A01A0F3A577E297AB37432067A0F
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)
Magika pebin
File icon (PE):PE icon
dhash icon 02040c0c0c5850a2 (1 x GuLoader)
Reporter abuse_ch
Tags:com exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
395
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Benefit_Signature_Plan#3762.com
Verdict:
No threats detected
Analysis date:
2024-09-12 19:02:37 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1fb8fe7e-2c64-49bb-83b8-157159451099

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Inject5.8784.1373.16557.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e33a7276bc4542b0498783
Tags:
Encryption Heur
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Creating a file
Delayed reading of the file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin masquerade microsoft_visual_cc overlay packed shell32
Link:
https://www.filescan.io/uploads/66e33a739e62610887e8e295/reports/0d820520-a67a-4e73-8b48-2de9e3b725d6/overview
Verdict:
Malicious
Labled as:
Trojan.PasswordStealer.Generic
Link:
https://www.hybrid-analysis.com/sample/cff42a20c90a525f62cf6c71c7362a9b94765f00f25c29faa20f2a0d67090ba8
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/98830f04-7c19-420f-99ab-cf358001dfc2
Result
Threat name:
GuLoader, Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad.phis.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1510338
Signature
C2 URLs / IPs found in malware configuration
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Found malware configuration
Machine Learning detection for sample
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Yara detected GuLoader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1510338 Sample: Benefit_Signature_Plan#3762... Startdate: 12/09/2024 Architecture: WINDOWS Score: 100 25 geoplugin.net 2->25 37 Suricata IDS alerts for network traffic 2->37 39 Found malware configuration 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 6 other signatures 2->43 8 Benefit_Signature_Plan#3762.com.exe 2 26 2->8         started        signatures3 process4 file5 23 C:\Users\user\AppData\Local\...\System.dll, PE32 8->23 dropped 45 Detected unpacking (changes PE section rights) 8->45 47 Tries to steal Mail credentials (via file registry) 8->47 49 Switches to a custom stack to bypass stack traces 8->49 12 Benefit_Signature_Plan#3762.com.exe 3 14 8->12         started        signatures6 process7 dnsIp8 27 102.165.14.28, 26000, 49744, 49745 ASDETUKhttpwwwheficedcomGB South Africa 12->27 29 geoplugin.net 178.237.33.50, 49746, 80 ATOM86-ASATOM86NL Netherlands 12->29 51 Detected Remcos RAT 12->51 53 Maps a DLL or memory area into another process 12->53 16 Benefit_Signature_Plan#3762.com.exe 1 12->16         started        19 Benefit_Signature_Plan#3762.com.exe 1 12->19         started        21 Benefit_Signature_Plan#3762.com.exe 2 12->21         started        signatures9 process10 signatures11 31 Tries to steal Instant Messenger accounts or passwords 16->31 33 Tries to harvest and steal browser information (history, passwords, etc) 16->33 35 Tries to steal Mail credentials (via file / registry access) 19->35
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/cff42a20c90a525f62cf6c71c7362a9b94765f00f25c29faa20f2a0d67090ba8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cff42a20c90a525f62cf6c71c7362a9b94765f00f25c29faa20f2a0d67090ba8/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2024-09-11 04:03:21 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
8 of 38 (21.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z72cuigjbjjf6ywpnry4onrktokhmxya6joct6vcb4va2zyjboua._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader collection credential_access discovery downloader spyware stealer
Link:
https://tria.ge/reports/240912-xn75ssyhre/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Loads dropped DLL
Reads user/profile data of web browsers
Credentials from Password Stores: Credentials from Web Browsers
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e232f100-b1a4-422b-9e63-5330027f3cb5
Unpacked files
SH256 hash:
c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448
MD5 hash:
9625d5b1754bc4ff29281d415d27a0fd
SHA1 hash:
80e85afc5cccd4c0a3775edbb90595a1a59f5ce0
Link:
https://www.unpac.me/results/8d19bd65-7ad1-4bf6-8569-4d9e0580b200/
SH256 hash:
cff42a20c90a525f62cf6c71c7362a9b94765f00f25c29faa20f2a0d67090ba8
MD5 hash:
4c906f03f8cbdcd7c66a15f6c8498330
SHA1 hash:
91e1270fc52b760ff2913f2db910f78c6051b74d
Link:
https://www.unpac.me/results/8d19bd65-7ad1-4bf6-8569-4d9e0580b200/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cff42a20c90a/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/cff42a20c90a525f62cf6c71c7362a9b94765f00f25c29faa20f2a0d67090ba8

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_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::SetFileSecurityW
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDiskFreeSpaceW
KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileExW
KERNEL32.dll::MoveFileW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::OpenClipboard
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

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