MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e582b99d0e9ea6b9ee35cc35923ea7c093caf49f3a260091e499ea70924fc423. 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: 17


Intelligence 17 IOCs 1 YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e582b99d0e9ea6b9ee35cc35923ea7c093caf49f3a260091e499ea70924fc423
SHA3-384 hash: c9d50a51ef9ff7978b9e2e6dc58b9de35e94745a851ab930c4e2a9d6034a73c8a2e4e9a594c51bff9529f9933115b446
SHA1 hash: f48126fe67484770f48c5a4154b72767a047d128
MD5 hash: 4b73654cf36400f07cca37f59c1f3045
humanhash: social-utah-salami-texas
File name:4b73654cf36400f07cca37f59c1f3045.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'217'024 bytes
First seen:2024-08-26 17:30:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'659 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:CZVuHRMORLbIddddazvtyrSjX/f3RxyKs7smnUhvZg2ECLdr9wZaQWlHSb:UwRMOJbIddddaQU/f3Rxla/Uh5ECRDB2
TLSH T19045239D73DEAF87DA9D3F3A64D2095003708695970BCB8F6F9809321CFA3DA910594B
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
File icon (PE):PE icon
dhash icon f8a49a32329aa4f8 (3 x AveMariaRAT, 1 x SnakeKeylogger, 1 x RemcosRAT)
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
23.106.127.123:91

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
23.106.127.123:91 https://threatfox.abuse.ch/ioc/1316364/

Intelligence

File Origin
# of uploads :
1
# of downloads :
442
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
4b73654cf36400f07cca37f59c1f3045.exe
Verdict:
Malicious activity
Analysis date:
2024-08-26 17:31:36 UTC
Tags:
rat remcos evasion stealer mpress
Link:
https://app.any.run/tasks/906352e5-74f0-4e54-893e-5ae9563def69

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Msilheracles-10017859-0
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66ccbbd7e7ff3f5a063c054d
Tags:
Discovery Network Stealth Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %AppData% directory
Launching a process
Сreating synchronization primitives
Connection attempt
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
lolbin obfuscated packed packed remote smartassembly smart_assembly
Link:
https://www.filescan.io/uploads/66ccbbd61c7fd2cfb705226e/reports/8594f6d8-9f05-4011-b76f-8c3aa728febd/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/e582b99d0e9ea6b9ee35cc35923ea7c093caf49f3a260091e499ea70924fc423
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:
Suspicious
Link:
https://analyze.intezer.com/analyses/8b077095-03f9-4933-8c92-b13f6a37fb85
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1499244
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Detected Remcos RAT
Found malware configuration
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)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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 AntiVM3
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1499244 Sample: g3krNxWpjt.exe Startdate: 26/08/2024 Architecture: WINDOWS Score: 100 41 geoplugin.net 2->41 49 Suricata IDS alerts for network traffic 2->49 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 12 other signatures 2->55 8 g3krNxWpjt.exe 1 4 2->8         started        12 Gojxamxsp.exe 2 2->12         started        14 Gojxamxsp.exe 2 2->14         started        signatures3 process4 file5 33 C:\Users\user\AppData\Roamingbehaviorgraphojxamxsp.exe, PE32 8->33 dropped 35 C:\Users\...behaviorgraphojxamxsp.exe:Zone.Identifier, ASCII 8->35 dropped 63 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->63 65 Writes to foreign memory regions 8->65 67 Injects a PE file into a foreign processes 8->67 16 InstallUtil.exe 3 13 8->16         started        69 Antivirus detection for dropped file 12->69 71 Multi AV Scanner detection for dropped file 12->71 73 Machine Learning detection for dropped file 12->73 20 InstallUtil.exe 12->20         started        22 InstallUtil.exe 14->22         started        signatures6 process7 dnsIp8 37 23.106.127.123, 49704, 49705, 91 LEASEWEB-APAC-SIN-11LeasewebAsiaPacificpteltdSG Singapore 16->37 39 geoplugin.net 178.237.33.50, 49706, 80 ATOM86-ASATOM86NL Netherlands 16->39 43 Detected Remcos RAT 16->43 45 Tries to steal Mail credentials (via file registry) 16->45 47 Maps a DLL or memory area into another process 16->47 24 InstallUtil.exe 1 16->24         started        27 InstallUtil.exe 1 16->27         started        29 InstallUtil.exe 2 16->29         started        31 5 other processes 16->31 signatures9 process10 signatures11 57 Tries to steal Instant Messenger accounts or passwords 24->57 59 Tries to steal Mail credentials (via file / registry access) 24->59 61 Tries to harvest and steal browser information (history, passwords, etc) 27->61
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/e582b99d0e9ea6b9ee35cc35923ea7c093caf49f3a260091e499ea70924fc423
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e582b99d0e9ea6b9ee35cc35923ea7c093caf49f3a260091e499ea70924fc423/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-08-23 12:46:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4wblthiot2tlt3rvzq2zepvhycj4v5e7hitabepethvhbespyqrq._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  10/10
Tags:
collection credential_access discovery persistence stealer
Link:
https://tria.ge/reports/240826-v3pkwswele/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Credentials from Password Stores: Credentials from Web Browsers
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Suspicious use of NtCreateUserProcessOtherParentProcess
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e05f51b9-96a3-4d5a-b763-b6494ae29040
Unpacked files
SH256 hash:
b1ad09efa947b62ecb49f36ac54539671d5c4bfd1590e31d51d6e26b29ff2902
MD5 hash:
556e93a2e2c3b16aad32e90a48952248
SHA1 hash:
5be22a9a15f711f9218ce5cd66df6df843879760
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/449ad455-9242-44d1-823d-722e31e6d7c7/
SH256 hash:
e582b99d0e9ea6b9ee35cc35923ea7c093caf49f3a260091e499ea70924fc423
MD5 hash:
4b73654cf36400f07cca37f59c1f3045
SHA1 hash:
f48126fe67484770f48c5a4154b72767a047d128
Link:
https://www.unpac.me/results/449ad455-9242-44d1-823d-722e31e6d7c7/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e582b99d0e9e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.96
Link:
https://yomi.yoroi.company/submissions/e582b99d0e9ea6b9ee35cc35923ea7c093caf49f3a260091e499ea70924fc423

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:NET
Create hunting rule
Author:malware-lu
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.

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments