MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 df6e2c62cf6413a030efeb9ae5e6288d77c4416332fbf05f461c83fa079dda49. 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: 18


Intelligence 18 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: df6e2c62cf6413a030efeb9ae5e6288d77c4416332fbf05f461c83fa079dda49
SHA3-384 hash: 5eacfac90e8dbb5c5300f2eab413df4f461d4439953b4ecc42c4064022761496cbfb45f501ce1d245149e9f9c201eabc
SHA1 hash: 71b89be1b7777072f51503d122449190b948df97
MD5 hash: 87b596dacf0d6b3d57e6213d974ba376
humanhash: uniform-arizona-winter-colorado
File name:af0b876a436452a6e998fc622493aaa4553bcc53864d66a6a6d5d476a85902eb_dump1.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:494'592 bytes
First seen:2024-07-24 13:47:02 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 8d5087ff5de35c3fbb9f212b47d63cad (170 x RemcosRAT)
ssdeep 6144:PXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZ5AXIcNS5Gv:PX7tPMK8ctGe4Dzl4h2QnuPs/Z57cv
TLSH T145B49E01BAD1C072D57514300D36F776EAB8BD2028364A7BB3D61D5BFE31190B62A6B7
TrID 32.2% (.EXE) Win64 Executable (generic) (10523/12/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4504/4/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon c4d48eaa8ad4d4f8 (1'000 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm)
Reporter ukycircle
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
341
Origin country :
JP JP
Vendor Threat Intelligence
Detection(s):
Win.Trojan.Remcos-9841897-0
Create hunting rule

Win.Trojan.Remcos-10002580-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66a105daae21d7902eaf9953
Tags:
Discovery Generic Infostealer Network Stealth Trojan
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Setting a keyboard event handler
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Creating a window
Restart of the analyzed sample
Creating a file in the %temp% directory
Reading critical registry keys
Creating a process from a recently created file
Launching a process
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Unauthorized injection to a recently created process
Stealing user critical data
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
crypto epmicrosoft_visual_cc evasive exploit explorer fingerprint fingerprint keylogger lolbin microsoft_visual_cc remcos shell32
Link:
https://www.filescan.io/uploads/66a105dd4c5c17942a7cd934/reports/5de80d60-4bc9-4d2e-844b-153407ab8dba/overview
Verdict:
Malicious
Labled as:
Remcos.Generic
Link:
https://www.hybrid-analysis.com/sample/df6e2c62cf6413a030efeb9ae5e6288d77c4416332fbf05f461c83fa079dda49
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e688f357-e77c-4c6a-aede-493db37d8769
Result
Threat name:
Nanocore, Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1480188
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Detected Nanocore Rat
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Remcos
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)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Nanocore RAT
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1480188 Sample: af0b876a436452a6e998fc62249... Startdate: 24/07/2024 Architecture: WINDOWS Score: 100 42 newnex.3utilities.com 2->42 44 npaperjoy.com 2->44 46 3 other IPs or domains 2->46 72 Found malware configuration 2->72 74 Malicious sample detected (through community Yara rule) 2->74 76 Antivirus detection for URL or domain 2->76 78 14 other signatures 2->78 9 af0b876a436452a6e998fc622493aaa4553bcc53864d66a6a6d5d476a85902eb_dump1.exe 3 18 2->9         started        14 dnshost.exe 4 2->14         started        signatures3 process4 dnsIp5 48 newnex.3utilities.com 104.243.242.162, 49714, 49716, 49717 VOXILITYGB United States 9->48 50 npaperjoy.com 199.188.206.52, 443, 49722, 49723 NAMECHEAP-NETUS United States 9->50 52 geoplugin.net 178.237.33.50, 49721, 80 ATOM86-ASATOM86NL Netherlands 9->52 34 C:\Users\user\AppData\Local\Temp\a.exe, PE32 9->34 dropped 36 C:\ProgramData\remcos\logs.dat, data 9->36 dropped 80 Contains functionality to bypass UAC (CMSTPLUA) 9->80 82 Detected unpacking (changes PE section rights) 9->82 84 Detected Remcos RAT 9->84 86 9 other signatures 9->86 16 a.exe 3 9->16         started        19 af0b876a436452a6e998fc622493aaa4553bcc53864d66a6a6d5d476a85902eb_dump1.exe 1 9->19         started        21 af0b876a436452a6e998fc622493aaa4553bcc53864d66a6a6d5d476a85902eb_dump1.exe 1 9->21         started        23 af0b876a436452a6e998fc622493aaa4553bcc53864d66a6a6d5d476a85902eb_dump1.exe 2 9->23         started        25 conhost.exe 14->25         started        file6 signatures7 process8 signatures9 58 Detected Nanocore Rat 16->58 60 Machine Learning detection for dropped file 16->60 62 Writes to foreign memory regions 16->62 70 2 other signatures 16->70 27 MSBuild.exe 1 8 16->27         started        64 Tries to steal Instant Messenger accounts or passwords 19->64 66 Tries to harvest and steal browser information (history, passwords, etc) 19->66 68 Tries to steal Mail credentials (via file / registry access) 21->68 process10 dnsIp11 54 maxlogs.webhop.me 104.243.242.164, 1620, 49739, 49740 VOXILITYGB United States 27->54 56 newsddawork.3utilities.com 172.111.232.164, 1620, 49728, 49732 AMANAHA-NEWCA United States 27->56 38 C:\Users\user\AppData\Roaming\...\run.dat, data 27->38 dropped 40 C:\Program Files (x86)\DNS Host\dnshost.exe, PE32 27->40 dropped 88 Detected Nanocore Rat 27->88 90 Hides that the sample has been downloaded from the Internet (zone.identifier) 27->90 32 WerFault.exe 23 16 27->32         started        file12 signatures13 process14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/df6e2c62cf6413a030efeb9ae5e6288d77c4416332fbf05f461c83fa079dda49
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/df6e2c62cf6413a030efeb9ae5e6288d77c4416332fbf05f461c83fa079dda49/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-07-24 13:48:05 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
24 of 24 (100.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=35xcyywpmqj2amhp5onolzrirv34iqldgl57ax2gdsb7ub453jeq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:nanocore family:remcos botnet:newremotehost collection credential_access discovery keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240724-q3jbnayemj/
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
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
NanoCore
Malware Config
C2 Extraction:
newnex.3utilities.com:8580
newsddawork.3utilities.com:1620
maxlogs.webhop.me:1620
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/180f31f5-d494-47b0-8158-f8a6cc547b09
Unpacked files
SH256 hash:
df6e2c62cf6413a030efeb9ae5e6288d77c4416332fbf05f461c83fa079dda49
MD5 hash:
87b596dacf0d6b3d57e6213d974ba376
SHA1 hash:
71b89be1b7777072f51503d122449190b948df97
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_w0
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
Link:
https://www.unpac.me/results/c7ba7cb9-72ce-4595-919e-764688de491e/
Parent samples :
af0b876a436452a6e998fc622493aaa4553bcc53864d66a6a6d5d476a85902eb
df6e2c62cf6413a030efeb9ae5e6288d77c4416332fbf05f461c83fa079dda49
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/df6e2c62cf64/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/df6e2c62cf6413a030efeb9ae5e6288d77c4416332fbf05f461c83fa079dda49

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_rat_unpacked
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

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
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
GDI_PLUS_APIInterfaces with Graphicsgdiplus.dll::GdiplusStartup
gdiplus.dll::GdipGetImageEncodersSize
gdiplus.dll::GdipGetImageEncoders
gdiplus.dll::GdipAlloc
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringA
WINMM.dll::mciSendStringW
WINMM.dll::PlaySoundW
WINMM.dll::waveInAddBuffer
WINMM.dll::waveInClose
WINMM.dll::waveInOpen
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExA
SHELL32.dll::ShellExecuteW
URL_MONIKERS_APICan Download & Execute componentsurlmon.dll::URLDownloadToFileW
urlmon.dll::URLOpenBlockingStreamW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
KERNEL32.dll::CreateProcessA
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::WriteProcessMemory
KERNEL32.dll::CloseHandle
WININET.dll::InternetCloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::FindFirstVolumeW
KERNEL32.dll::FindNextVolumeW
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetDriveTypeA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetConsoleOutputCP
KERNEL32.dll::SetConsoleTextAttribute
KERNEL32.dll::SetStdHandle
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileMappingW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::DeleteFileA
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LookupPrivilegeValueA
KERNEL32.dll::QueryDosDeviceW
WIN_CRYPT_APIUses Windows Crypt APIADVAPI32.dll::CryptAcquireContextA
ADVAPI32.dll::CryptGenRandom
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyA
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegCreateKeyW
ADVAPI32.dll::RegDeleteKeyA
ADVAPI32.dll::RegOpenKeyExA
ADVAPI32.dll::RegOpenKeyExW
WIN_SVC_APICan Manipulate Windows ServicesADVAPI32.dll::ChangeServiceConfigW
ADVAPI32.dll::ControlService
ADVAPI32.dll::OpenSCManagerW
ADVAPI32.dll::OpenSCManagerA
ADVAPI32.dll::OpenServiceW
ADVAPI32.dll::QueryServiceConfigW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuA
USER32.dll::EmptyClipboard
USER32.dll::OpenClipboard
USER32.dll::CreateWindowExA

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