MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f. 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: 17

Intelligence 17 IOCs YARA 29 File information Comments

SHA256 hash:	03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f
SHA3-384 hash:	bc65e6b312741c0f8ae783ff1a5cccd6f26df67cd7258351e3981af8e2d4714c6e9e2d209d4334a6c5293626e3dd1773
SHA1 hash:	81d6be82bb5d840c10d7f0fad9312ab860715717
MD5 hash:	986a1e015e13471ba117c834efdf7368
humanhash:	north-october-whiskey-skylark
File name:	F09877890000090.bat
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	998'400 bytes
First seen:	2023-12-01 09:23:02 UTC
Last seen:	2023-12-01 11:25:22 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	24576:rV1x3UYz0awm1X5T5I7qcBZdepQ3LE3ES5QQgvC:Lx3vvNnVI+cBZspQbEUWZ
Threatray	3'074 similar samples on MalwareBazaar
TLSH	T1CA250224E5F91B12D6FE97F518115A140FF378AAE47DE32D4DC9A4EA2666F000A43F23
TrID	71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10523/12/4) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.3% (.EXE) Win32 Executable (generic) (4505/5/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter	lowmal3
Tags:	exe RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

327

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

F09877890000090.bat

Verdict:

Malicious activity

Analysis date:

2023-12-01 09:29:11 UTC

Tags:

rat remcos keylogger

Link:

https://app.any.run/tasks/9ef55717-1577-4a52-bc32-f5975e5c8aa2

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

Remcos

Link:

https://www.capesandbox.com/analysis/461665/

Detection(s):

Porcupine.Malware.58887.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% directory

Enabling the 'hidden' option for recently created files

Adding an access-denied ACE

Creating a process with a hidden window

Creating a file in the %temp% directory

Launching a process

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Setting a keyboard event handler

Using the Windows Management Instrumentation requests

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f

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

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/0f8609c0-4f76-476b-93c7-3fd71b4b5fcc

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1351269

Behaviour

Behavior Graph:

n/a

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2023-12-01 09:24:05 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

14 of 23 (60.87%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=apq3i3jpptjcifxsjj6v6tvlzdoswppibofyzxengyhqf3i5smpq._file

Verdict:

malicious

Label(s):

remcos

agenttesla

RemcosRAT

51dabbac77dd37a7643e57d5b709bbffd375b3f0f644d0b677b9f33900317d9e

RemcosRAT

728e6e2b92f46c84865ec974f440661f40b8df3f328a7c2bd842c1c697f6c992

RemcosRAT

86b4d9c62ca9eccd9341136d5d4831548ccb79ed000f29e8a8cc0afcbe639c90

RemcosRAT

a6eb5df0aa74bbf113e867adf46fc4e227fb72137d4bc5f9359cef4e34cf25ef

RemcosRAT

b4dfd2634ebcea3dfb1dd0becd6b7dd6945fa3d8650c1d3a870ad3185320af45

RemcosRAT

dd548447d54ccb44d04b59aea458b6c9b7bde3224a621df6ff0d6e79ac2bb568

RemcosRAT

ef91fad857fc6fde238f090e51f8d9aed1dc09efc089aa539041ec6cf0d81a0f

RemcosRAT

+ 3'064 additional samples on MalwareBazaar

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:remotehost rat

Link:

https://tria.ge/reports/231201-lckpksgf81/

Behaviour

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Checks computer location settings

Remcos

Malware Config

C2 Extraction:

107.175.229.139:8087

Unpacked files

SH256 hash:

bc99dcc182eaf17394c34611c1aef4ad45c3079ae116c19caa17620d64c39f7c

MD5 hash:

84fe0cc42b4f30e7b6f58c92f9ad3d56

SHA1 hash:

d753cc7cc8e2927f9cde57fb67b5bceebd2f5fd2

Link:

https://www.unpac.me/results/54792bbd-5fdd-4482-a3e1-5d38c7d7a525/

SH256 hash:

d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5

MD5 hash:

579197d4f760148a9482d1ebde113259

SHA1 hash:

cf6924eb360c7e5a117323bebcb6ee02d2aec86d

Link:

https://www.unpac.me/results/54792bbd-5fdd-4482-a3e1-5d38c7d7a525/

SH256 hash:

0e8a5f6bd3e915b9d2fae9428730dc5017348d23b622bccbb1971e352052734b

MD5 hash:

56feb04fdc8b0453c62267ac204ed555

SHA1 hash:

7d41fb41cac90bea85cb6691a5945568115cbcbf

Link:

https://www.unpac.me/results/54792bbd-5fdd-4482-a3e1-5d38c7d7a525/

SH256 hash:

21377f07ce4da41e847a0283b56715da8f1033d0fa026d9333513c26aa2ade83

MD5 hash:

a5cd8e218a05011cc98d57a1c0810c1e

SHA1 hash:

4692e744ecbe0c4eb5221e268da579cb539de750

Link:

https://www.unpac.me/results/54792bbd-5fdd-4482-a3e1-5d38c7d7a525/

SH256 hash:

1d5d05f977665e72d96f0cfa60de530d7912a51f44464e805c468b73f53eaf11

MD5 hash:

229284f8cddfa43ac54a0e60196e709b

SHA1 hash:

27bc5b44cc9c2689482a4f622a092beb94bbda8c

Detections:

Remcos

win_remcos_w0

win_remcos_auto

win_remcos_rat_unpacked

INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

malware_windows_remcos_rat

Link:

https://www.unpac.me/results/54792bbd-5fdd-4482-a3e1-5d38c7d7a525/

Parent samples :

03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f
9c365f7df9b2bb958a53890dc80a258de1f5ea0781155f7c2b3741b9dd593867
fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd
2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744
dfd724316cb0edbf1212cbf5e71f007d22b7a38e7860d96d4d4bedf17eaa85ea
f05ac4628bc3cc7da752894e47479c2f8532ed5c485943b7abb680a79d4dba9c
3de39937dbba16980b665dcf03505af8bd11a77a9f09d8e5ca69837932a9340e
cf14c5b8ca5ad71f9ca5b37e4784001d9128b161958f6daf5807540eca4ffcc4

SH256 hash:

03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f

MD5 hash:

986a1e015e13471ba117c834efdf7368

SHA1 hash:

81d6be82bb5d840c10d7f0fad9312ab860715717

Link:

https://www.unpac.me/results/54792bbd-5fdd-4482-a3e1-5d38c7d7a525/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/03e1b46d2f7c/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/03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f

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:	AgentTesla_DIFF_Common_Strings_01 Create hunting rule
Author:	schmidtsz
Description:	Identify partial Agent Tesla strings

Rule name:	BLOWFISH_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for Blowfish constants

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_EXE_Packed_MPress Create hunting rule
Author:	ditekSHen
Description:	Detects executables built or packed with MPress PE compressor

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many email and collaboration clients. Observed in information stealers

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:	maldoc_getEIP_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

Rule name:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	pe_imphash Create hunting rule

Rule name:	QbotStuff Create hunting rule
Author:	anonymous

Rule name:	Remcos Create hunting rule
Author:	kevoreilly
Description:	Remcos Payload

Rule name:	REMCOS_RAT_variants Create hunting rule

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	TeslaCryptPackedMalware Create hunting rule

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

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_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

Rule name:	yara_template Create hunting rule

File information

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

Malspam

RemcosRAT

exe 03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/461665/

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample