MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 02d7ab6afcf9f15fba169e0d8491499cf27a87fba17a3afd80bd6e5873a9338f. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 02d7ab6afcf9f15fba169e0d8491499cf27a87fba17a3afd80bd6e5873a9338f
SHA3-384 hash: 91c4e5c943bce9a8c1a2606f7e8b32cb0518e902397a270468339df6deb64ed7cf4575518da7e5d78b823314a5f2eafc
SHA1 hash: f624b61ad82b64dac59fa74e486d579b96ec748c
MD5 hash: 5df3f869eb74340e461aaa6e06985962
humanhash: salami-zulu-uranus-july
File name:kasyyyy.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'153'536 bytes
First seen:2022-10-25 07:56:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:yPWrFt4T2r+tp9DH8rRB3Buwi2xWrPdI+w06Xwm4AGoptMqY:MTdFcrRBwwi/tw5zH7Y
TLSH T18C353BF4A0AF15C9F40B9DE1597C7CE9067275F38ED906D0133C77848FBAA6A6E0484A
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 2b53515161496d23 (10 x Formbook, 6 x RemcosRAT, 4 x AgentTesla)
Reporter lowmal3
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
234
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
kasyyyy.exe
Verdict:
Malicious activity
Analysis date:
2022-10-25 07:57:37 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/4ba26f70-1f51-4bf8-9a09-e7649f9c97da

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/323836/
Detection(s):
SecuriteInfo.com.PUA.EmbeddedEXE-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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/bac3ea2e-969f-4bc8-bd67-6e2f2572b3a0
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1097334
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Detected Remcos RAT
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Sigma detected: Remcos
Uses dynamic DNS services
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 729988 Sample: kasyyyy.exe Startdate: 25/10/2022 Architecture: WINDOWS Score: 100 43 fatherlord1.ddns.net 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus / Scanner detection for submitted sample 2->47 49 Detected Remcos RAT 2->49 51 8 other signatures 2->51 8 kasyyyy.exe 1 5 2->8         started        12 Ikxrqwdk.exe 2 2->12         started        14 Ikxrqwdk.exe 1 2->14         started        signatures3 process4 file5 33 C:\Users\user\AppData\...\Ikxrqwdk.exe, PE32 8->33 dropped 35 C:\Users\...\Ikxrqwdk.exe:Zone.Identifier, ASCII 8->35 dropped 37 C:\Users\user\AppData\...\kasyyyy.exe.log, ASCII 8->37 dropped 53 Encrypted powershell cmdline option found 8->53 55 Injects a PE file into a foreign processes 8->55 16 kasyyyy.exe 2 8->16         started        19 powershell.exe 14 8->19         started        57 Antivirus detection for dropped file 12->57 59 Machine Learning detection for dropped file 12->59 21 powershell.exe 13 12->21         started        23 Ikxrqwdk.exe 12->23         started        25 powershell.exe 9 14->25         started        signatures6 process7 dnsIp8 39 fatherlord1.ddns.net 16->39 41 192.168.2.1 unknown unknown 16->41 27 conhost.exe 19->27         started        29 conhost.exe 21->29         started        31 conhost.exe 25->31         started        process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/02d7ab6afcf9f15fba169e0d8491499cf27a87fba17a3afd80bd6e5873a9338f/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-10-25 08:10:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
23 of 41 (56.10%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=all2w2x47hyv7oqwtygyjekjttzhvb73uf5dv7maxvxfq45jgohq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:kelzy persistence rat
Link:
https://tria.ge/reports/221025-js811abhg6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
fatherlord1.ddns.net:2022
Unpacked files
SH256 hash:
df79a2ee83f2e275e82d147a183ac3138f41ff6b2e481310ef3b9a3b04c1b612
MD5 hash:
0ebfe303524d55d18db66e823f1ce009
SHA1 hash:
12cabf6f25ae69d8f0e683831a28c8912e338721
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/523c3032-7602-4ce0-857a-6f9dc285856d/
SH256 hash:
a6acfe617040a5005be0d1675756dc9f09596d3bb2bb3ebc8a2c6881b8c4cfd7
MD5 hash:
db843358b89f4074346cab346720ab06
SHA1 hash:
94d77a5f2d66f20baf557ad30c3ab284665980d9
Link:
https://www.unpac.me/results/523c3032-7602-4ce0-857a-6f9dc285856d/
SH256 hash:
5058738bf55f44bd487e2f9365ad2298a7f553b6c7e7258b040d627976326b40
MD5 hash:
9db1c1d14f9e8ef580a01eb22835d32e
SHA1 hash:
2bdc5bae38763569ae27f698403c76a8daa90d7f
Link:
https://www.unpac.me/results/523c3032-7602-4ce0-857a-6f9dc285856d/
SH256 hash:
02d7ab6afcf9f15fba169e0d8491499cf27a87fba17a3afd80bd6e5873a9338f
MD5 hash:
5df3f869eb74340e461aaa6e06985962
SHA1 hash:
f624b61ad82b64dac59fa74e486d579b96ec748c
Link:
https://www.unpac.me/results/523c3032-7602-4ce0-857a-6f9dc285856d/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/02d7ab6afcf9/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/02d7ab6afcf9f15fba169e0d8491499cf27a87fba17a3afd80bd6e5873a9338f

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:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
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.

Malspam

RemcosRAT

Executable exe 02d7ab6afcf9f15fba169e0d8491499cf27a87fba17a3afd80bd6e5873a9338f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/323836/

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