MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 391ac1ceedd3c960f32890f834a86ba1570ee5a0cc12dcef1714d43bb29fc457. 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: 16

Intelligence 16 IOCs YARA 4 File information Comments

SHA256 hash:	391ac1ceedd3c960f32890f834a86ba1570ee5a0cc12dcef1714d43bb29fc457
SHA3-384 hash:	d58b3f8fb5fc700c8b3e80c469cd6046fc5c54cd01d3d37123bd09df62e31c02b052df8209fbcc3ff6dcdadd1fd6c416
SHA1 hash:	6b3b87020dfa6b838fb3585853226ba507148c1a
MD5 hash:	c0a1ffbe408f92e743f0727ca8947da8
humanhash:	robin-uncle-washington-gee
File name:	통관용_AG-C016-24_ATLANTIC GOLD_NORTH WESTpdf.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	914'944 bytes
First seen:	2024-08-08 05:12:41 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	21371b611d91188d602926b15db6bd48 (70 x Formbook, 33 x AgentTesla, 20 x RemcosRAT)
ssdeep	24576:PiUmSB/o5d1ubcv5W2AFUNxWG+qJn7/7SktB6L:P/mU/ohubcvM2AVPmXSP
TLSH	T15A1523537082CC9CD63273B060FB8D9D49A17671ECCDB6BB4360E75DBCB23919852A4A
TrID	39.1% (.EXE) UPX compressed Win32 Executable (27066/9/6) 38.3% (.EXE) Win32 EXE Yoda's Crypter (26569/9/4) 7.2% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.5% (.EXE) Win32 Executable (generic) (4504/4/1) 2.9% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):
dhash icon	aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter	threatcat_ch
Tags:	exe RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

484

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

통관용_AG-C016-24_ATLANTIC GOLD_NORTH WESTpdf.exe

Verdict:

No threats detected

Analysis date:

2024-08-08 05:13:15 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/b6399cd6-7d97-4a63-8c6d-21cbf95d590c

Note:

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

Detection(s):

SecuriteInfo.com.Trojan.Win32.AgentTesla.13683.23123.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=66b453dfaa5b40be0a9fd8e2

Tags:

Network Stealth Heur

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Creating a file in the %temp% directory

Launching a process

Сreating synchronization primitives

Connecting to a non-recommended domain

Connection attempt

Sending a custom TCP request

Reading critical registry keys

Forced shutdown of a system process

Stealing user critical data

Unauthorized injection to a system process

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/391ac1ceedd3c960f32890f834a86ba1570ee5a0cc12dcef1714d43bb29fc457

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.

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/a6ddef06-d85d-4cdc-9a50-1062163f8e9e

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1489826

Signature

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Binary is likely a compiled AutoIt script file

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 Remcos RAT

Found API chain indicative of sandbox detection

Found malware configuration

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: Remcos

Switches to a custom stack to bypass stack traces

System process connects to network (likely due to code injection or exploit)

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 Remcos RAT

Yara detected UAC Bypass using CMSTP

Yara detected WebBrowserPassView password recovery tool

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/391ac1ceedd3c960f32890f834a86ba1570ee5a0cc12dcef1714d43bb29fc457

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/391ac1ceedd3c960f32890f834a86ba1570ee5a0cc12dcef1714d43bb29fc457/

Threat name:

Win32.Backdoor.Remcos

Status:

Malicious

First seen:

2024-08-08 04:56:40 UTC

AV detection:

18 of 33 (54.55%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=henmdtxn2pewb4zisd4djkdluflq5znazqjnz3yxctkdxmu7yrlq._file

Verdict:

malicious

Label(s):

remcos

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:remotehost collection credential_access discovery rat stealer upx

Link:

https://tria.ge/reports/240809-k4tacsserb/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

AutoIT Executable

Suspicious use of SetThreadContext

Accesses Microsoft Outlook accounts

UPX packed file

Credentials from Password Stores: Credentials from Web Browsers

Detected Nirsoft tools

NirSoft MailPassView

NirSoft WebBrowserPassView

Remcos

Malware Config

C2 Extraction:

194.169.175.190:2404

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/28179ddf-f6d9-42f2-979d-2929c016ff07

Unpacked files

SH256 hash:

16da2306e37c4a85a217cbe52b0a65175c1868e3a29822e4e25ff78f85768288

MD5 hash:

81596543df6c19892da2284507ed0014

SHA1 hash:

649d3308a7611d87cbc0e30e7f95004c1a4eb181

Detections:

Remcos

win_remcos_auto

win_remcos_w0

malware_windows_remcos_rat

Link:

https://www.unpac.me/results/1c136692-77ea-4cab-88aa-83df8e19c07d/

Parent samples :

575c516d8a79420f7319c19839c63919b585947635fa54e87430e1c9f95e299d
c2cf1032ae671d0bcba6d625bc72236b125f864a1bb6114c6b96a8e0c91c6759
391ac1ceedd3c960f32890f834a86ba1570ee5a0cc12dcef1714d43bb29fc457
ccd6b2a6a94558d78d46955365f3dde6562301f7e3be7c7821521e8ae1cb2f10
60e88a5e93683dcbea9f4fef73f946335a1378f0130ff44fab52f18f487c2c8a
2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9
92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa

SH256 hash:

d5604581e7fc8aa2e298be036ef86d0dfd7ebf153c0779bc13defa77b8f4a789

MD5 hash:

e8bef5dddee64be347dd979b672314dd

SHA1 hash:

1b5cddda122287c2c5b98f2ad21611e8f015f0ad

Detections:

AutoIT_Compiled

Link:

https://www.unpac.me/results/1c136692-77ea-4cab-88aa-83df8e19c07d/

SH256 hash:

391ac1ceedd3c960f32890f834a86ba1570ee5a0cc12dcef1714d43bb29fc457

MD5 hash:

c0a1ffbe408f92e743f0727ca8947da8

SHA1 hash:

6b3b87020dfa6b838fb3585853226ba507148c1a

Link:

https://www.unpac.me/results/1c136692-77ea-4cab-88aa-83df8e19c07d/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/391ac1ceedd3/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/391ac1ceedd3c960f32890f834a86ba1570ee5a0cc12dcef1714d43bb29fc457

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:	pe_detect_tls_callbacks Create hunting rule

Rule name:	UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser Create hunting rule
Author:	malware-lu

Rule name:	upx_largefile Create hunting rule
Author:	k3nr9

File information

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

Malspam

RemcosRAT

exe 391ac1ceedd3c960f32890f834a86ba1570ee5a0cc12dcef1714d43bb29fc457

(this sample)

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high
CHECK_NX	Missing Non-Executable Memory Protection	critical

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::GetAce
MULTIMEDIA_API	Can Play Multimedia	WINMM.dll::timeGetTime
WIN_BASE_API	Uses Win Base API	KERNEL32.DLL::LoadLibraryA

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