MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c81fa45ad1007232e7cb8fba523847c0ae647a4c4016ed39c7a7cfb979b4f870. 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: 9

Intelligence 9 IOCs YARA 9 File information Comments

SHA256 hash:	c81fa45ad1007232e7cb8fba523847c0ae647a4c4016ed39c7a7cfb979b4f870
SHA3-384 hash:	2fced6aaaf6704cb0ef6e9f5d773310f51d3c852fd2d33ae3aa967add3580cda73348f8dddc9e03cfd8cadec18e9d9c8
SHA1 hash:	ba0ba9012e8edfd7f09c14b1c294fadc0f6527fa
MD5 hash:	f87a5ac81b547fbb43252a2e31f63d86
humanhash:	red-white-low-georgia
File name:	20210121_RFQ_BPA_21_8012_Behr PO.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	870'912 bytes
First seen:	2021-02-02 15:36:28 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep	24576:Kb490emgRO3Qc+2epwHftU47y47nAzVWI:59mYuQcdi6VJ7X7nwW
Threatray	2 similar samples on MalwareBazaar
TLSH	6305BF5223D07B04D07D6B348226394083F7F9AED775CA1E7D9831DB6631A88A7E7782
Reporter	abuse_ch
Tags:	exe geo;POL nVpn RAT RemcosRAT

abuse_ch

Malspam distributing RemcosRAT:

HELO: vps.asswart.com
Sending IP: 45.85.90.28
From: vertrieb <vertrieb@behr-international.de>
Subject: Nowa wycena zamówienia
Attachment: Nowa wycena zamówienia.iso (contains "20210121_RFQ_BPA_21_8012_Behr PO.exe")

RemcosRAT C2:
nwajesu2021.ddns.net:1313 (79.134.225.9)

Pointing to nVpn:

% Information related to '79.134.225.0 - 79.134.225.127'

% Abuse contact for '79.134.225.0 - 79.134.225.127' is 'abuse@privacyfirst.sh'

inetnum: 79.134.225.0 - 79.134.225.127
netname: PRIVACYFIRST-EU
country: EU
remarks: This prefix is assigned to The PRIVACYFIRST Project, which
remarks: operates infrastructure jointly used by various VPN service
remarks: providers. We have a very strong focus on privacy and freedom.
remarks: In case of abuse, we encourage all international law enforcement
remarks: agencies to get in touch with our abuse contact. Due to the fact
remarks: that we keep no logs of user activities and only share data when
remarks: it is legally required under our jurisdiction, it is very unlikely
remarks: for a demand of user information to be successful. Still, that
remarks: should not deter you from reaching out.
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
status: ASSIGNED PA
mnt-by: AF15-MNT
org: ORG-TPP6-RIPE
created: 2020-07-14T15:26:02Z
last-modified: 2020-07-14T15:31:06Z
source: RIPE

Intelligence

File Origin

# of uploads :

# of downloads :

152

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/115174/

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

Launching a process

Creating a process with a hidden window

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.

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/c81fa45ad1007232e7cb8fba523847c0ae647a4c4016ed39c7a7cfb979b4f870/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2021-02-02 15:37:06 UTC

AV detection:

10 of 28 (35.71%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=zap2iwwrabzdfz6lr65feochycxgi6smialo2oohu7h3s6nu7bya._file

Verdict:

unknown

RemcosRAT

c3acb5af91950717d39e501c96f08d049f80daaa5e7fb2d1d9469518146d7a47

RemcosRAT

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos ransomware rat

Link:

https://tria.ge/reports/210202-81jfs8easn/

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

Remcos

Malware Config

C2 Extraction:

nwajesu2021.ddns.net:1313

Unpacked files

SH256 hash:

bd03f1419db658015507630078378ed7b24ed480166fb9855308e78cd249fb44

MD5 hash:

06ba0381250a64535e2ff8dcf4f37907

SHA1 hash:

bb9f2a2c1d8bdabeefcb7b1f0333a47ae144571c

Link:

https://www.unpac.me/results/c5c50d38-af92-40fd-9ee4-7bc9d6544d99/

SH256 hash:

431f7f8bae802f9d0228e49d84efbf21a890821317caa2774c6934f24026b8bd

MD5 hash:

c91630c6942e467055d5c4c10f74d03e

SHA1 hash:

5dd5eeba67742fbcac2809b71ad6fedbbb16892b

Detections:

win_remcos_g0

win_remcos_auto

Link:

https://www.unpac.me/results/c5c50d38-af92-40fd-9ee4-7bc9d6544d99/

SH256 hash:

abee08218f6bab3c50521229233d134478cb99fde04866825bbaba88d7349917

MD5 hash:

314db1d7fcb1c0397532b882a05be9cf

SHA1 hash:

15964a9c13af5ea04fb92ed6b1b34437df81048f

Link:

https://www.unpac.me/results/c5c50d38-af92-40fd-9ee4-7bc9d6544d99/

SH256 hash:

c81fa45ad1007232e7cb8fba523847c0ae647a4c4016ed39c7a7cfb979b4f870

MD5 hash:

f87a5ac81b547fbb43252a2e31f63d86

SHA1 hash:

ba0ba9012e8edfd7f09c14b1c294fadc0f6527fa

Link:

https://www.unpac.me/results/c5c50d38-af92-40fd-9ee4-7bc9d6544d99/

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/c81fa45ad1007232e7cb8fba523847c0ae647a4c4016ed39c7a7cfb979b4f870

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:	ach_RemcosRAT Create hunting rule
Author:	abuse.ch

Rule name:	Chrome_stealer_bin_mem Create hunting rule
Author:	James_inthe_box
Description:	Chrome in files like avemaria

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer Create hunting rule
Author:	ditekSHen
Description:	detects Windows exceutables potentially bypassing UAC using eventvwr.exe

Rule name:	Keylog_bin_mem Create hunting rule
Author:	James_inthe_box
Description:	Contains Keylog

Rule name:	Parallax Create hunting rule
Author:	@bartblaze
Description:	Identifies Parallax RAT.

Rule name:	Remcos Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Remcos in memory

Rule name:	remcos_rat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	REMCOS_RAT_variants Create hunting rule

Rule name:	win_remcos_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	autogenerated rule brought to you by yara-signator