MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8e25a2520c09dd71e17afbde126f58514921c6d967a786bde096fafda08701a. 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: 15


Intelligence 15 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8e25a2520c09dd71e17afbde126f58514921c6d967a786bde096fafda08701a
SHA3-384 hash: abb6c1681aaa20851204ce4b14f166b060fa30a1cd62394909b986b16bbf2552179fcb43c28b341181bf4bbc56b72419
SHA1 hash: d7c0fdc2b3b92df96b5bcd7a390aa7312df086a5
MD5 hash: 6c3b88c4675ff6cad62702925a3390f1
humanhash: november-paris-arizona-pip
File name:IAENMAIL-A4-240717-0830-000090912_PDF.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:2'335'232 bytes
First seen:2024-07-25 17:03:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 23682184df099986ebd41d63cd7803a7 (4 x RemcosRAT, 2 x RedLineStealer, 1 x AgentTesla)
ssdeep 49152:qB1BRf3rOSzOzrFNj8e1KbWF8K7Vk3SZTH4OWOEkw/R8jDYWg16pb67Wy/Zz:aaRrFCI4v7p
TLSH T116B5CF0593E801A8D477EB34CA659333D6B0B8860734E58F069DD6492F73EA1AFBB315
TrID 72.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
13.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
2.5% (.EXE) OS/2 Executable (generic) (2029/13)
2.5% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter malwarelabnet
Tags:exe remcos RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
463
Origin country :
CA CA
Vendor Threat Intelligence
Detection(s):
Win.Malware.Dacic-10033090-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66a34f3d81e42e2b16c7aa71
Tags:
Execution Network Static Generic
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a process with a hidden window
Launching a process
Сreating synchronization primitives
Connection attempt
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Forced shutdown of a system process
Stealing user critical data
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
fingerprint hacktool lolbin masquerade microsoft_visual_cc packed regedit remcos remote shell32
Link:
https://www.filescan.io/uploads/66a28583dfa8b2fced4e9342/reports/09362096-717e-4f7f-baaf-179dbbe13d30/overview
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.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1482250
Behaviour
Behavior Graph:
n/a
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a8e25a2520c09dd71e17afbde126f58514921c6d967a786bde096fafda08701a
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a8e25a2520c09dd71e17afbde126f58514921c6d967a786bde096fafda08701a/
Threat name:
Win64.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-07-24 15:20:32 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vdrfujjayco5ohqxv666cjxvqukjehdnsz5hq266bfx27wqioana._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection credential_access discovery execution rat spyware stealer
Link:
https://tria.ge/reports/240725-vk9hcasgqn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Credentials from Password Stores: Credentials from Web Browsers
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Malware Config
C2 Extraction:
103.198.26.25:96
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/aa6e3479-6f8d-4408-bdcf-28593429d723
Unpacked files
SH256 hash:
a8e25a2520c09dd71e17afbde126f58514921c6d967a786bde096fafda08701a
MD5 hash:
6c3b88c4675ff6cad62702925a3390f1
SHA1 hash:
d7c0fdc2b3b92df96b5bcd7a390aa7312df086a5
Link:
https://www.unpac.me/results/c8999c5a-a36b-4be5-a5fb-5ab563c76711/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a8e25a2520c0/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/a8e25a2520c09dd71e17afbde126f58514921c6d967a786bde096fafda08701a

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:Jupyter_infostealer
Create hunting rule
Author:CD_R0M_
Description:Rule for Jupyter Infostealer/Solarmarker malware from september 2021-December 2022
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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 (GUARD_CF)high
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::CreateWellKnownSid
ADVAPI32.dll::RevertToSelf
ADVAPI32.dll::GetSecurityDescriptorLength
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetWindowsAccountDomainSid
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessA
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
ADVAPI32.dll::SetThreadToken
KERNEL32.dll::VirtualAllocExNuma
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::DeleteVolumeMountPointW
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetVolumeInformationW
KERNEL32.dll::GetSystemInfo
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::FreeConsole
KERNEL32.dll::GetConsoleOutputCP
KERNEL32.dll::GetConsoleWindow
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileExW
KERNEL32.dll::ReplaceFileW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_BCRYPT_APICan Encrypt Filesbcrypt.dll::BCryptDecrypt
bcrypt.dll::BCryptDestroyKey
bcrypt.dll::BCryptEncrypt
bcrypt.dll::BCryptGenRandom
bcrypt.dll::BCryptImportKey
bcrypt.dll::BCryptOpenAlgorithmProvider
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyExW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryInfoKeyW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExA
ADVAPI32.dll::RegSetValueExW

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