MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7a91f6cabe959b845088ecfc8eec19cd9032ef83b76a49b5d9121ae14135549a. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7a91f6cabe959b845088ecfc8eec19cd9032ef83b76a49b5d9121ae14135549a
SHA3-384 hash: b3100515f7fd0a3019754a426ca5df94814912d8230174c5fd3d249e97b11e48f530c5690cc00ced39d2f28bd99f0556
SHA1 hash: f77b46c7d3b90715a14f95795808db571608401e
MD5 hash: bc30b93979811f31968a546e8e761550
humanhash: twenty-low-violet-mike
File name:LisectAVT_2403002C_6.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:882'270 bytes
First seen:2024-07-25 01:49:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 24576:RqPj0C+UdQ0+asWpOckHte7zMiHdElFqG165oeBh:YPXLAgOVte7zMpC5T
TLSH T17715231DB94B5263E48E203084205685E776BB4A4FEDC61FDF2AA404EB53A41FB71ECD
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter Anonymous
Tags:exe RemcosRAT


Avatar
Anonymous
this malware sample is very nasty!

Intelligence

File Origin
# of uploads :
1
# of downloads :
308
Origin country :
CN CN
Vendor Threat Intelligence
Detection(s):
Win.Packed.Pwsx-10025051-0
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Searching for synchronization primitives
Сreating synchronization primitives
Connection attempt
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
overlay packed vbnet
Link:
https://www.filescan.io/uploads/66a1af504c5c17942a7d3fa7/reports/a8eceb25-6ca2-4271-b653-7828af6ab5b5/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.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1481311
Behaviour
Behavior Graph:
n/a
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/7a91f6cabe959b845088ecfc8eec19cd9032ef83b76a49b5d9121ae14135549a
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7a91f6cabe959b845088ecfc8eec19cd9032ef83b76a49b5d9121ae14135549a/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-07-25 01:50:09 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
2
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pki7nsv6swnyiuei5t6i53azzwidf34dw5vetnozcinocqjvksna._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:new logs discovery rat
Link:
https://tria.ge/reports/240725-b9d8ysthma/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Remcos
Malware Config
C2 Extraction:
107.150.18.202:2404
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/797cfef6-ce8f-4f01-ad56-3a2d95678e77
Unpacked files
SH256 hash:
7a91f6cabe959b845088ecfc8eec19cd9032ef83b76a49b5d9121ae14135549a
MD5 hash:
bc30b93979811f31968a546e8e761550
SHA1 hash:
f77b46c7d3b90715a14f95795808db571608401e
Link:
https://www.unpac.me/results/7a86ac77-c3dd-46eb-b881-dd04676fa967/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/7a91f6cabe95/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

RemcosRAT

Executable exe 7a91f6cabe959b845088ecfc8eec19cd9032ef83b76a49b5d9121ae14135549a

(this sample)

  
Link
https://bbs.kafan.cn/forum-31-1.html
  
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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments