MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 90920ec16dc530c71905b20801f4d443ddcadbcb1d2a5d0a957fc837169fa4b2. 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 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 90920ec16dc530c71905b20801f4d443ddcadbcb1d2a5d0a957fc837169fa4b2
SHA3-384 hash: 00d08e27c04266fb9deffb6d0fa16fff0b1cf1bfc882ce61554daa0f580e54ec2b15cfd618cfb5192f2ac5224a9b89a7
SHA1 hash: 0b8928ad5ed6e91ba800b6314ed00cfcc672a083
MD5 hash: 5be2f10437a6105706e880b53b89544a
humanhash: montana-shade-island-mike
File name:5be2f10437a6105706e880b53b89544a
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'252'864 bytes
First seen:2023-05-15 07:20:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:em86oV9I0oh2pEGxA5x9YrNS3D1UE44q:eAhEEDx96NSzbq
Threatray 1'907 similar samples on MalwareBazaar
TLSH T1A7456B2A0F702F6AF03D423B90367B58A3F09516115AEBC1FDF621E507EA9959F90EC4
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)
File icon (PE):PE icon
dhash icon d4e8c4b2b2d4e8d4 (4 x RemcosRAT, 1 x SnakeKeylogger)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
258
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
2b52e3645953f9c89870ecf02cf7c0c5
Verdict:
Malicious activity
Analysis date:
2023-05-15 06:37:07 UTC
Tags:
opendir exploit cve-2017-11882 loader keylogger rat remcos stealer
Link:
https://app.any.run/tasks/9b36e0e6-3adb-41a3-9c29-354d5ed1744e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/389966/
Detection(s):
SecuriteInfo.com.Variant.MSILHeracles.82407.17627.8932.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Launching a process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated remcos
Link:
https://www.filescan.io/uploads/6461dd5fe18b58ecd89b725e/reports/4eb90541-4afd-4b44-a17c-175d337454be/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/90920ec16dc530c71905b20801f4d443ddcadbcb1d2a5d0a957fc837169fa4b2
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2dde294b-eae0-41be-96a6-b51e3d0a2c50
Result
Threat name:
Remcos, AgentTesla, DarkTortilla
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1233465
Signature
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to modify clipboard data
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Sigma detected: Remcos
Snort IDS alert for network traffic
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)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected DarkTortilla Crypter
Yara detected Remcos RAT
Yara detected Telegram RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 866446 Sample: MrCexEWc4h.exe Startdate: 15/05/2023 Architecture: WINDOWS Score: 100 40 Snort IDS alert for network traffic 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 13 other signatures 2->46 7 MrCexEWc4h.exe 3 2->7         started        process3 file4 28 C:\Users\user\AppData\...\MrCexEWc4h.exe.log, ASCII 7->28 dropped 60 Writes to foreign memory regions 7->60 62 Hides that the sample has been downloaded from the Internet (zone.identifier) 7->62 64 Injects a PE file into a foreign processes 7->64 11 AddInProcess32.exe 3 18 7->11         started        16 AddInProcess32.exe 7->16         started        signatures5 process6 dnsIp7 36 geoplugin.net 178.237.33.50, 49688, 80 ATOM86-ASATOM86NL Netherlands 11->36 38 pops.mastercoa.co 184.75.223.195, 39477, 49685, 49686 AMANAHA-NEWCA Canada 11->38 30 C:\Users\user\AppData\Local\Temp\rcybin.exe, PE32 11->30 dropped 32 C:\ProgramData\remcos\logs.dat, data 11->32 dropped 66 Maps a DLL or memory area into another process 11->66 68 Installs a global keyboard hook 11->68 18 rcybin.exe 3 11->18         started        21 AddInProcess32.exe 1 11->21         started        23 AddInProcess32.exe 11->23         started        25 30 other processes 11->25 70 Contains functionality to modify clipboard data 16->70 file8 signatures9 process10 dnsIp11 48 Multi AV Scanner detection for dropped file 18->48 50 Machine Learning detection for dropped file 18->50 52 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->52 54 Tries to steal Instant Messenger accounts or passwords 21->54 56 Tries to steal Mail credentials (via file / registry access) 21->56 34 192.168.2.1 unknown unknown 25->34 58 Tries to harvest and steal browser information (history, passwords, etc) 25->58 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/90920ec16dc530c71905b20801f4d443ddcadbcb1d2a5d0a957fc837169fa4b2/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-05-15 02:45:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
25
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=scja5qlnyuymogifwiead5guipo4vw6lduvf2cuvp7edofu7usza._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
369d984c5962e27366924fcba94ea986f093dc9357a09555d1e30893ddc55e73
RemcosRAT
3a573796b5e6f1cc3a92eef7e268fa4e74aeddf34f5dd62f7b02109fe560ecd2
RemcosRAT
3d4ffcd1cd594f452ad1c374933eea8dd36d21a6d01372cc7f1afc636d26fa72
RemcosRAT
538b607c03aa2d0960c396529399921f957f421a3ca084d140316e2ee21889cc
RemcosRAT
76005c1982c2d4df1995d8ba0e2163ac84b5009823466b9e043a5a017e15c9cd
RemcosRAT
797c253df096431e69f1aa84f0010f248384fe437cda4bf8df916c48fbb7984f
RemcosRAT
818bd67db5fe30f5cfdab861f996f30fa20427e3e1aa65ffe6d98f6c7af7558d
RemcosRAT
a4da37e92ca54c8851ad144fba875b61e2018f69bbe43b11926d8f8d831b56f0
RemcosRAT
ba484a35c10e0de7b344da174c26560e29bd3fe895216f9d03c0ce1cfc3de706
RemcosRAT
+ 1'897 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:remcos botnet:remotehost collection keylogger rat spyware stealer trojan
Link:
https://tria.ge/reports/230515-h6m51shf2v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Executes dropped EXE
Loads dropped DLL
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
AgentTesla
Remcos
Malware Config
C2 Extraction:
pops.mastercoa.co:39477
https://api.telegram.org/bot5992710824:AAF1u8jJHAJYeLRXKBJ4VoIVrJtue7y5FVs/
Unpacked files
SH256 hash:
56aaa2b9e53d69dd75c8d1247220d8ea97b1b7705796b2e2ddff34c7eea8adee
MD5 hash:
50f28d178452b2db4e1f466904e55c78
SHA1 hash:
d9a3246a570715d756a6c653b6818afb99ae39ec
Link:
https://www.unpac.me/results/5bc67479-c1b1-46bf-9d48-3d6d31c9e508/
SH256 hash:
0781f74db6c9ff7aa0c1e76dd0ebc4a9575fba6caca9aac9fb0131c5a73c84be
MD5 hash:
2c064163cda2f093cf6d20302481dff7
SHA1 hash:
cf948b10d999c369ef51972f86278a4f536d400d
Link:
https://www.unpac.me/results/5bc67479-c1b1-46bf-9d48-3d6d31c9e508/
SH256 hash:
78df8242f1ca4bdc47a69c9ef128f8ff1a54b5fbe65f91d1fd4a5667ec7aa4bb
MD5 hash:
6fe068c9c0e8991222d166aa2b1a790d
SHA1 hash:
b46b92ba5eb4ef18a2c95b543f8f95fc436620d9
Link:
https://www.unpac.me/results/5bc67479-c1b1-46bf-9d48-3d6d31c9e508/
SH256 hash:
e4df412aae2d2ddc35618b80123f17425d8cbeff16d0665ecd6e5296e9ca939b
MD5 hash:
1283dad473d6ec8171c2020e1656da8a
SHA1 hash:
4123064d33aff232ca9db5d50ea3456aec70c628
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/5bc67479-c1b1-46bf-9d48-3d6d31c9e508/
Parent samples :
90920ec16dc530c71905b20801f4d443ddcadbcb1d2a5d0a957fc837169fa4b2
90a337ab1343d9a80a9d5bc97c004fb22ea4a9f562fd2c8ef65cf423738263cf
c80849b89470656a8f81e539e38a7246e032d943639e3a161612a6daabb77282
SH256 hash:
90920ec16dc530c71905b20801f4d443ddcadbcb1d2a5d0a957fc837169fa4b2
MD5 hash:
5be2f10437a6105706e880b53b89544a
SHA1 hash:
0b8928ad5ed6e91ba800b6314ed00cfcc672a083
Link:
https://www.unpac.me/results/5bc67479-c1b1-46bf-9d48-3d6d31c9e508/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/90920ec16dc5/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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

RemcosRAT

Executable exe 90920ec16dc530c71905b20801f4d443ddcadbcb1d2a5d0a957fc837169fa4b2

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2632309/
Cape
Cape
https://www.capesandbox.com/analysis/389966/

Comments


Avatar
zbet commented on 2023-05-15 07:20:38 UTC

url : hxxp://104.234.10.91/w122/vbc.exe