MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f309f3761a93a216dbf027483ef67fefa7faaea1f99fd1c0da212679992959d3. 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


RemcosRAT


Vendor detections: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f309f3761a93a216dbf027483ef67fefa7faaea1f99fd1c0da212679992959d3
SHA3-384 hash: f28fe05194c3d3731289829d7e04808f6d5cbc1045e60d9a7f029f7cf29dc0099f85c396c34670f64c82426886a72324
SHA1 hash: a496cd1b4582983ae5dbfd66bc8909cbc278bceb
MD5 hash: e5e0751344586ce05049a64737b3153b
humanhash: fanta-burger-charlie-north
File name:CEBI_ tlumaczenie dokumentow dostawy do CEBI PL_ 11.08.24.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:944'872 bytes
First seen:2024-11-08 14:57:41 UTC
Last seen:2024-11-08 16:25:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 671f2a1f8aee14d336bab98fea93d734 (182 x GuLoader, 4 x Formbook, 4 x RemcosRAT)
ssdeep 24576:yBfJj94G/6rElS6BA0OW6WEN9goUIxCZm74qLi:ARj94uBz3OWEQqCZm74mi
TLSH T17215236219900CA5FD706EF039B71526CFD887164513CE0FAB889EE0B8F65D94A0E5AF
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
File icon (PE):PE icon
dhash icon 70f0f092cecccc72 (2 x GuLoader, 1 x RemcosRAT)
Reporter Anonymous
Tags:exe RemcosRAT signed

Code Signing Certificate

Organisation:kvartfinalerne
Issuer:kvartfinalerne
Algorithm:sha256WithRSAEncryption
Valid from:2024-04-05T02:24:11Z
Valid to:2027-04-05T02:24:11Z
Serial number: 6b5a7e1c8e27b1e03deb59593d7e6dbc851e2734
Thumbprint Algorithm:SHA256
Thumbprint: 986be8a55dc3d5a4f743a79ded81d3b75857a27fc3479023d1e5bb607f6b0437
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
382
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
CEBI_ tlumaczenie dokumentow dostawy do CEBI PL_ 11.08.24.exe
Verdict:
Malicious activity
Analysis date:
2024-11-08 15:31:20 UTC
Tags:
rat remcos remote evasion
Link:
https://app.any.run/tasks/3d3a54bb-f82d-4099-a081-07f582eeee04

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.InjectorX-gen.18665.5404.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=672e26fba5bee3c9d42bd74c
Tags:
exploit virus blic
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Searching for the window
Delayed reading of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
installer microsoft_visual_cc overlay packed
Link:
https://www.filescan.io/uploads/672e270053112d61aaa976bb/reports/a11c8eae-ca9a-492b-be8d-aa2f1609f48c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/f309f3761a93a216dbf027483ef67fefa7faaea1f99fd1c0da212679992959d3
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/bb9a4922-44b7-43a2-b1ab-56480567f5e9
Result
Threat name:
Remcos, GuLoader
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1552318
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Installs a global keyboard hook
Maps a DLL or memory area into another process
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Remcos
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 steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
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: 1552318 Sample: CEBI_ tlumaczenie dokumento... Startdate: 08/11/2024 Architecture: WINDOWS Score: 100 29 odumegwu.duckdns.org 2->29 31 geoplugin.net 2->31 33 evesecret.ma 2->33 47 Suricata IDS alerts for network traffic 2->47 49 Antivirus detection for URL or domain 2->49 51 Antivirus detection for dropped file 2->51 55 11 other signatures 2->55 8 CEBI_ tlumaczenie dokumentow dostawy do CEBI PL_ 11.08.24.exe 43 2->8         started        signatures3 53 Uses dynamic DNS services 29->53 process4 file5 23 C:\Users\user\AppData\Local\...\System.dll, PE32 8->23 dropped 11 CEBI_ tlumaczenie dokumentow dostawy do CEBI PL_ 11.08.24.exe 4 18 8->11         started        process6 dnsIp7 35 odumegwu.duckdns.org 143.244.46.150, 49985, 49986, 49988 COGENT-174US United States 11->35 37 evesecret.ma 37.230.62.86, 49984, 80 BRIGHTBOX-ASGB United Kingdom 11->37 39 geoplugin.net 178.237.33.50, 49987, 80 ATOM86-ASATOM86NL Netherlands 11->39 25 C:\Users\user\AppData\Local\...behaviorgrapheoginas.exe, PE32 11->25 dropped 27 C:\ProgramData\remcos\logs.dat, data 11->27 dropped 57 Detected Remcos RAT 11->57 59 Maps a DLL or memory area into another process 11->59 61 Installs a global keyboard hook 11->61 16 CEBI_ tlumaczenie dokumentow dostawy do CEBI PL_ 11.08.24.exe 1 11->16         started        19 CEBI_ tlumaczenie dokumentow dostawy do CEBI PL_ 11.08.24.exe 1 11->19         started        21 CEBI_ tlumaczenie dokumentow dostawy do CEBI PL_ 11.08.24.exe 2 11->21         started        file8 signatures9 process10 signatures11 41 Tries to steal Instant Messenger accounts or passwords 16->41 43 Tries to harvest and steal browser information (history, passwords, etc) 16->43 45 Tries to steal Mail credentials (via file / registry access) 19->45
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f309f3761a93a216dbf027483ef67fefa7faaea1f99fd1c0da212679992959d3
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f309f3761a93a216dbf027483ef67fefa7faaea1f99fd1c0da212679992959d3/
Threat name:
Win32.Trojan.InjectorX
Create hunting rule
Status:
Malicious
First seen:
2024-11-08 14:31:27 UTC
File Type:
PE (Exe)
Extracted files:
10
AV detection:
13 of 37 (35.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6me7g5q2sorbnw7qe5ed55t756t7vlvb7gp5dqg2eethtgjjlhjq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:lonewolf collection discovery persistence rat spyware stealer
Link:
https://tria.ge/reports/241108-sb5rpatlew/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Accesses Microsoft Outlook accounts
Loads dropped DLL
Reads user/profile data of web browsers
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
odumegwu.duckdns.org:51525
odumeje1.duckdns.org:51525
odumeje.duckdns.org:51525
Verdict:
Malicious
Tags:
loader guloader
YARA:
NSIS_GuLoader_July_2024
Link:
https://app.threat.zone/submission/6f790fdd-c340-40ad-8434-8388f59f58e7
Unpacked files
SH256 hash:
014f1dfeb842cf7265a3644bc6903c592abe9049bfc7396829172d3d72c4d042
MD5 hash:
12b140583e3273ee1f65016becea58c4
SHA1 hash:
92df24d11797fefd2e1f8d29be9dfd67c56c1ada
Link:
https://www.unpac.me/results/aa5d2fa8-bd3f-407c-b7ab-623c52ea5ece/
SH256 hash:
f309f3761a93a216dbf027483ef67fefa7faaea1f99fd1c0da212679992959d3
MD5 hash:
e5e0751344586ce05049a64737b3153b
SHA1 hash:
a496cd1b4582983ae5dbfd66bc8909cbc278bceb
Link:
https://www.unpac.me/results/aa5d2fa8-bd3f-407c-b7ab-623c52ea5ece/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.37
Link:
https://yomi.yoroi.company/submissions/f309f3761a93a216dbf027483ef67fefa7faaea1f99fd1c0da212679992959d3

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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

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
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::MoveFileA
KERNEL32.dll::MoveFileExA
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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