MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91b00403de43b3c7d5f630b69934dcb1a9694c6a2cbea5eae599caa54405cf81. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 91b00403de43b3c7d5f630b69934dcb1a9694c6a2cbea5eae599caa54405cf81
SHA3-384 hash: b0cd4d6c7774f55fce11d969aa765dd4edab849f9f69308201826769b9c73ec1e73c4611a3025757d9ba472bec26242d
SHA1 hash: 1891893858178353c295d55533e196d2d4d2c1c9
MD5 hash: d24c89b8ad4bcabbf5c19ec12a39576f
humanhash: south-ink-eight-burger
File name:Template Master Vendor_SAP.xIsx.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:649'728 bytes
First seen:2021-02-16 06:33:06 UTC
Last seen:2021-02-17 20:53:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'743 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:r+/VWUgZUeBcW5LVg4RJlj68Fjh+8PgpUM4xQ:r+NWUgZ1OuJM8F4cgpUvx
Threatray 1'559 similar samples on MalwareBazaar
TLSH 66D45A1B62986F6BF0BE97756074840087F0BC57E764DA9DBED474EB1870F44CAA2B02
Reporter abuse_ch
Tags:exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: vps.asswart.com
Sending IP: 45.85.90.28
From: Abu Rizal <debra_v@sbstech.co.id>
Subject: Penawaran FR Thermal_Legalitas PErusahaan
Attachment: Template Master Vendor_SAP.xIsx.iso (contains "Template Master Vendor_SAP.xIsx.exe")

RemcosRAT C2:
graceland2021.ddns.net:1313 (185.19.85.133)

Intelligence

File Origin
# of uploads :
5
# of downloads :
115
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/117291/
Detection(s):
SecuriteInfo.com.ArtemisD24C89B8AD4B.3073.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Result
Threat name:
Unknown
Detection:
malicious
Classification:
n/a
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/608633
Signature
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Scheduled temp file as task from temp location
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
Download SVG
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/91b00403de43b3c7d5f630b69934dcb1a9694c6a2cbea5eae599caa54405cf81/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-02-16 06:34:07 UTC
AV detection:
6 of 48 (12.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=sgyaia66ioz4pvpwgc3jsng4wguwstdkfs7kl2xfthfkkrafz6aq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4b8335250b1cfcb5fac9790261dd43f5efcbc187c68961ee5afd34662d0599ed
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'549 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos rat
Link:
https://tria.ge/reports/210216-ts7hc2b7ba/
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:
graceland2021.ddns.net:1313
Unpacked files
SH256 hash:
b2499a2af35b550fbe7f541a14ff1225e1202324f351eecf85de6c8e9fc7c27c
MD5 hash:
5e732e4265622675313195dead01047e
SHA1 hash:
359c710a93c2f58cdc2a45de8dd48a6884a70645
Link:
https://www.unpac.me/results/f54822e9-1cff-4e89-b531-5715e84751bc/
SH256 hash:
91b00403de43b3c7d5f630b69934dcb1a9694c6a2cbea5eae599caa54405cf81
MD5 hash:
d24c89b8ad4bcabbf5c19ec12a39576f
SHA1 hash:
1891893858178353c295d55533e196d2d4d2c1c9
Link:
https://www.unpac.me/results/f54822e9-1cff-4e89-b531-5715e84751bc/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/91b00403de43b3c7d5f630b69934dcb1a9694c6a2cbea5eae599caa54405cf81

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

File information

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

Malspam

RemcosRAT

iso b5de4a5e45c2c65657cd5c4a1cfd91888b889646e7098c7642c63dac118bbf71

RemcosRAT

Executable exe 91b00403de43b3c7d5f630b69934dcb1a9694c6a2cbea5eae599caa54405cf81

(this sample)

  
Dropped by
MD5 ef55380bc9f7bc8824c5776fc066cb86
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/117291/
  
Dropped by
SHA256 b5de4a5e45c2c65657cd5c4a1cfd91888b889646e7098c7642c63dac118bbf71

Comments