MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 581bd1167bd9b40944de9a2d8842ed8aa841fdfc69d896c24520873095e0ac03. 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: 9
| SHA256 hash: | 581bd1167bd9b40944de9a2d8842ed8aa841fdfc69d896c24520873095e0ac03 |
|---|---|
| SHA3-384 hash: | 05000fcf6b2397e21dae1fd90d7e59ed9fbbfbecb58713b7e5af8e6a794dc774ba6e57de161b57bcaf6ee047f44406cb |
| SHA1 hash: | ede2f547aae04f958172240dfd6cd0b76990e006 |
| MD5 hash: | 7fd79d1258fa8ed52e0d49bd780acd2e |
| humanhash: | nine-magnesium-august-arizona |
| File name: | Original BL_pdf.scr |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 139'264 bytes |
| First seen: | 2021-01-05 09:33:19 UTC |
| Last seen: | 2021-01-05 11:39:38 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | a58452980f47253c6c85d2302c371765 (2 x RemcosRAT, 1 x GuLoader) |
| ssdeep | 1536:7amG9PJQ6qdxYnt6EbdHYD9E+/5EhtwCaXDdoDIlF:sQ6d4/3/6htpaBo6F |
| Threatray | 5'935 similar samples on MalwareBazaar |
| TLSH | C3D372D66403C8BED97F92F4191C31A49902BD34F81B681F62EB774493B87E0E5227E6 |
| Reporter |  abuse_ch |
| Tags: | RAT RemcosRAT scr |
abuse_ch
Malspam distributing RemcosRAT:HELO: vps.jocmachinerys.com
Sending IP: 45.85.90.246
From: Maersk <support@bluehost.com>
Reply-To: swiftlogz@yandex.com
Subject: Re: URGENT 2021 MAERSK DELIVERY
Attachment: Original BL, CI AWB.rar (contains "Original BL_pdf.scr")
Intelligence
File Origin
# of uploads :
2
# of downloads :
216
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Original BL_pdf.scr
Verdict:
No threats detected
Analysis date:
2021-01-05 09:36:42 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Result
Verdict:
Suspicious
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
Launching a process
Unauthorized injection to a recently created process by context flags manipulation
Result
Threat name:
Remcos GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Signature
Contains functionality to hide a thread from the debugger
Creates autostart registry keys with suspicious values (likely registry only malware)
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
Malicious sample detected (through community Yara rule)
Sigma detected: Remcos
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected GuLoader
Yara detected VB6 Downloader Generic
Behaviour
Behavior Graph:
Detection:
remcos
Threat name:
Win32.Trojan.Generic
Status:
Suspicious
First seen:
2021-01-05 09:34:07 UTC
AV detection:
3 of 46 (6.52%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 5'925 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos persistence rat
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Remcos
Unpacked files
SH256 hash:
581bd1167bd9b40944de9a2d8842ed8aa841fdfc69d896c24520873095e0ac03
MD5 hash:
7fd79d1258fa8ed52e0d49bd780acd2e
SHA1 hash:
ede2f547aae04f958172240dfd6cd0b76990e006
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
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: | ach_RemcosRAT |
|---|---|
| Author: | abuse.ch |
| Rule name: | Chrome_stealer_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Chrome in files like avemaria |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer |
|---|---|
| Author: | ditekSHen |
| Description: | detects Windows exceutables potentially bypassing UAC using eventvwr.exe |
| Rule name: | Keylog_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Contains Keylog |
| Rule name: | Parallax |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies Parallax RAT. |
| Rule name: | Remcos |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Remcos in memory |
| Rule name: | remcos_rat |
|---|---|
| Author: | jeFF0Falltrades |
| Rule name: | REMCOS_RAT_variants |
|---|
| Rule name: | suspicious_packer_section |
|---|---|
| Author: | @j0sm1 |
| Description: | The packer/protector section names/keywords |
| Reference: | http://www.hexacorn.com/blog/2012/10/14/random-stats-from-1-2m-samples-pe-section-names/ |
| Rule name: | win_remcos_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | autogenerated rule brought to you by yara-signator |
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
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