MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf. 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
| SHA256 hash: | ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf |
|---|---|
| SHA3-384 hash: | 1b0c32f3f1b8f743c18010808c90503cf086d1fe2c0fb86d1a462c35c82298bdbfca55d78ca1a137294e9f7a6fe5d1f6 |
| SHA1 hash: | b51d7cba074c043b543a537db2743566fa3ba0ac |
| MD5 hash: | 1784f051e12e25d36f33965d1a32f806 |
| humanhash: | utah-table-fifteen-beryllium |
| File name: | 5-22 - Re-Schedule Notice for (HTW) EVER FRANK 1346-018E (TWTPE) - SO#C348.scr |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 948'224 bytes |
| First seen: | 2024-05-22 10:13:39 UTC |
| Last seen: | 2024-05-27 10:17:18 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 12288:i3X4MaU+3Rk/T2xi/tRBd1XRbiacwiy75UZN7I7L7Zu28C//rBA0Rt:EsU+aqxi/vBnAx5ao8nEC//rC0R |
| Threatray | 788 similar samples on MalwareBazaar |
| TLSH | T193152309A0E89773D97C1B71902B302A737593439377E7900DCD1EE76DABBA0868B947 |
| TrID | 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.0% (.EXE) Win64 Executable (generic) (10523/12/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.2% (.EXE) Win32 Executable (generic) (4504/4/1) 1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23) |
| File icon (PE): |  |
| dhash icon | 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer) |
| Reporter |  threatcat_ch |
| Tags: | exe RemcosRAT |
Intelligence
File Origin
# of uploads :
3
# of downloads :
371
Origin country :
CHVendor Threat Intelligence
Malware family:
remcos
ID:
1
File name:
ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe
Verdict:
Malicious activity
Analysis date:
2024-05-22 10:15:37 UTC
Tags:
rat remcos remote evasion stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Verdict:
Malicious
Score:
92.5%
Link:
Tags:
Remcos
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
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
Stealing user critical data
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
masquerade packed remcos
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
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
Verdict:
Malicious
Result
Threat name:
Remcos
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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 submitted file
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)
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Status:
Malicious
First seen:
2024-05-22 09:25:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
22 of 24 (91.67%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 778 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:remotehost collection rat spyware stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
104.250.180.178:7902
Unpacked files
SH256 hash:
007ce3ca43c205acdbddca45b098228c2ef1e8a160dd7eb5b84d105d648db082
MD5 hash:
8366fea8ef65e387ac6d13eddc17d4da
SHA1 hash:
f63e45a2298effc9a780dbf12605e64fc4c69695
SH256 hash:
0b7dcc18b0ef39734a24ca5923b02df82c670d08365fe376f2ed4ff9fcbc6303
MD5 hash:
0441cc0dacc6d821252e66a156b1d9bd
SHA1 hash:
df46cc702950a53a5de7b804d2076ef03f8ac6b4
SH256 hash:
f540e8d603962027b3a1f8b86d035281bfbdd3a05a621ead255825bc2082632a
MD5 hash:
d172f59251b97b415b621d302e1be2b7
SHA1 hash:
b1534e603749c901b5ac185f20e281f6be7fa908
SH256 hash:
69dd751153f6ae4f2c008b12bcbf20b1328be9e0bda45f08eb8f32a837f34ba5
MD5 hash:
e47f6f1f5e743fdbf9d6579b96748a2b
SHA1 hash:
21dbce7b186f72c69647fce6aa0b5cf403aa87c4
Detections:
Remcos
win_remcos_w0
win_remcos_auto
malware_windows_remcos_rat
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Parent samples :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 hash:
ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf
MD5 hash:
1784f051e12e25d36f33965d1a32f806
SHA1 hash:
b51d7cba074c043b543a537db2743566fa3ba0ac
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
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: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | iexplorer_remcos |
|---|---|
| Author: | iam-py-test |
| Description: | Detect iexplorer being taken over by Remcos |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) |
| Rule name: | maldoc_find_kernel32_base_method_1 |
|---|---|
| Author: | Didier Stevens (https://DidierStevens.com) |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | Remcos |
|---|---|
| Author: | kevoreilly |
| Description: | Remcos Payload |
| Rule name: | REMCOS_RAT_variants |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | ThreadControl__Context |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | Windows_Trojan_Remcos_b296e965 |
|---|---|
| Author: | Elastic Security |
| Reference: | https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set |
| Rule name: | win_remcos_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.remcos. |
| Rule name: | win_remcos_w0 |
|---|---|
| Author: | Matthew @ Embee_Research |
| Description: | Detects strings present in remcos rat Samples. |
| Rule name: | yarahub_win_remcos_rat_unpacked_aug_2023 |
|---|---|
| Author: | Matthew @ Embee_Research |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (HIGH_ENTROPY_VA) | high |
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