MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5933dcc6e1411448bf62c554b4ff7b437665bcd8ad3ee37ed30253d6603d1e98. 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 5 File information Comments
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SHA256 hash: 5933dcc6e1411448bf62c554b4ff7b437665bcd8ad3ee37ed30253d6603d1e98
SHA3-384 hash: c2af927d01bfc23e934f8773f0f2e16e568861f9f79d8f59183a978197e0dbbc346987266078d90536747176350d1273
SHA1 hash: 13a0199e99808f1bf0b5012d531a2112e426f10e
MD5 hash: f810d507322c18715f2742225379bb01
humanhash: mirror-enemy-lima-mobile
File name:Заявка на закупку товара_услуги 750.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'373'696 bytes
First seen:2024-08-17 14:37:31 UTC
Last seen:2024-08-17 15:20:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:Fnq8Kk+npDoArs6ssearUAjMoxXy21nv3DToxwxJll:0JnpDoas6sgrYoxXl1v3DTSwFl
TLSH T108550224AB84869BCEDD96F4D0D9581853FCC037535FEB4A9CA5A0F22C0278B56099FF
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter nickkuechel
Tags:exe RAT remcos RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
493
Origin country :
US US
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
_750.exe
Verdict:
Malicious activity
Analysis date:
2024-08-17 14:42:55 UTC
Tags:
rat remcos netreactor stealer evasion keylogger mpress
Link:
https://app.any.run/tasks/ef96ea3e-b09e-40e9-b91f-2d9616264c24

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PWS.Stealer.39676.12959.3090.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66c0b5cbaa5b40be0aa054d4
Tags:
Discovery Network Stealth Msil
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/5933dcc6e1411448bf62c554b4ff7b437665bcd8ad3ee37ed30253d6603d1e98
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:
Malicious
Link:
https://analyze.intezer.com/analyses/98e3e888-00a1-486e-ac5a-34612cb63ee6
Result
Threat name:
Remcos
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Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1494229
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Potentially Suspicious Malware Callback Communication
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)
Uses dynamic DNS services
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: 1494229 Sample: 2555 750.exe Startdate: 17/08/2024 Architecture: WINDOWS Score: 100 44 taysour6lakut1.duckdns.org 2->44 46 geoplugin.net 2->46 54 Multi AV Scanner detection for domain / URL 2->54 56 Suricata IDS alerts for network traffic 2->56 58 Found malware configuration 2->58 62 13 other signatures 2->62 8 2555 750.exe 1 4 2->8         started        12 Txtrbjwdx.exe 2 2->12         started        14 Txtrbjwdx.exe 2 2->14         started        signatures3 60 Uses dynamic DNS services 44->60 process4 file5 36 C:\Users\user\AppData\Roaming\Txtrbjwdx.exe, PE32 8->36 dropped 38 C:\Users\...\Txtrbjwdx.exe:Zone.Identifier, ASCII 8->38 dropped 64 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->64 66 Writes to foreign memory regions 8->66 68 Allocates memory in foreign processes 8->68 16 InstallUtil.exe 3 14 8->16         started        70 Multi AV Scanner detection for dropped file 12->70 72 Machine Learning detection for dropped file 12->72 74 Injects a PE file into a foreign processes 12->74 21 InstallUtil.exe 12->21         started        23 InstallUtil.exe 14->23         started        signatures6 process7 dnsIp8 40 taysour6lakut1.duckdns.org 172.111.244.162, 1960, 49730, 49731 M247GB United States 16->40 42 geoplugin.net 178.237.33.50, 49732, 80 ATOM86-ASATOM86NL Netherlands 16->42 34 C:\Users\user\AppData\Roaming\mzpos.dat, data 16->34 dropped 48 Tries to steal Mail credentials (via file registry) 16->48 50 Maps a DLL or memory area into another process 16->50 52 Installs a global keyboard hook 16->52 25 InstallUtil.exe 1 16->25         started        28 InstallUtil.exe 1 16->28         started        30 InstallUtil.exe 2 16->30         started        32 InstallUtil.exe 16->32         started        file9 signatures10 process11 signatures12 76 Tries to steal Instant Messenger accounts or passwords 25->76 78 Tries to steal Mail credentials (via file / registry access) 25->78 80 Tries to harvest and steal browser information (history, passwords, etc) 28->80
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/5933dcc6e1411448bf62c554b4ff7b437665bcd8ad3ee37ed30253d6603d1e98
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5933dcc6e1411448bf62c554b4ff7b437665bcd8ad3ee37ed30253d6603d1e98/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-08-14 13:27:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lez5zrxbiekerp3cyvklj733in3glpgyvu7og7wtajj5myb5d2ma._file
Verdict:
malicious
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:fresh collection credential_access discovery persistence rat stealer
Link:
https://tria.ge/reports/240817-rzpvpstejq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
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
Remcos
Suspicious use of NtCreateUserProcessOtherParentProcess
Malware Config
C2 Extraction:
taysour6lakut1.duckdns.org:1960
taysour6lakut1.duckdns.org:1961
taysour6lakut2.duckdns.org:1960
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4b1f84ab-a5d4-4675-b050-901644621300
Unpacked files
SH256 hash:
63eabb8e24c395cceada1c387374ce3cbc79bad941cd12aaf0a93fab8b27d09e
MD5 hash:
1d3eab51ff6ebf377a332fc4af2dfe89
SHA1 hash:
40da6e7762a48b157e6e32bee1805ba3de4b381a
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/ffbc947f-379d-4aae-b4fd-48e483e1e95e/
SH256 hash:
5933dcc6e1411448bf62c554b4ff7b437665bcd8ad3ee37ed30253d6603d1e98
MD5 hash:
f810d507322c18715f2742225379bb01
SHA1 hash:
13a0199e99808f1bf0b5012d531a2112e426f10e
Link:
https://www.unpac.me/results/ffbc947f-379d-4aae-b4fd-48e483e1e95e/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/5933dcc6e141/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/5933dcc6e1411448bf62c554b4ff7b437665bcd8ad3ee37ed30253d6603d1e98

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
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