MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 66dd4b98d3e93fd0952848a182fefce3a962e41c1121d2bf32fd92b27bd794bf. 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: 13
| SHA256 hash: | 66dd4b98d3e93fd0952848a182fefce3a962e41c1121d2bf32fd92b27bd794bf |
|---|---|
| SHA3-384 hash: | ac5eaa9d14a4fae17eddfad61b2151e827f33db17d69a4e9eb5ba26951adcf0ab1a3d7669bf81ac9afe8d87338fb5ed5 |
| SHA1 hash: | af759a533b2b7d6925a04882b101f361445b95fa |
| MD5 hash: | 8a8bded3a03d8c656fe52e8a49594729 |
| humanhash: | rugby-earth-jupiter-item |
| File name: | bREJ.exe |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 238'592 bytes |
| First seen: | 2023-11-20 05:07:44 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | bc4f8e98d1041d53dd63bfb91ed10d0a (52 x RemcosRAT) |
| ssdeep | 3072:bOSI2I7txG68nYrugMZJMfsciIpuKNtrUQlAK3qSjYPS+IAXb3Ixi5eFrgurIlNq:6vG68YrvM80ypnjAedo3qiGUY2ChzI |
| Threatray | 2'885 similar samples on MalwareBazaar |
| TLSH | T1433412641721E95AF0E0D0BCDA44E9F25AA97C602D8B6E0D43ECFF17F917002E78E556 |
| TrID | 54.9% (.EXE) UPX compressed Win32 Executable (27066/9/6) 13.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 10.2% (.EXE) Win16 NE executable (generic) (5038/12/1) 9.1% (.EXE) Win32 Executable (generic) (4505/5/1) 4.1% (.EXE) OS/2 Executable (generic) (2029/13) |
| File icon (PE): |  |
| dhash icon | c4d48eaa8ad4d4f8 (1'211 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm) |
| Reporter |  pmelson |
| Tags: | exe remcos RemcosRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
367
Origin country :
USVendor Threat Intelligence
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
Launching cmd.exe command interpreter
Launching a process
Creating a file
Creating a window
Sending a custom TCP request
Query of malicious DNS domain
Blocking the User Account Control
Unauthorized injection to a system process
Gathering data
Gathering data
Verdict:
Malicious
Labled as:
Dacic.A9349469.A.Generic
Malware family:
REMCOS
Verdict:
Malicious
Result
Threat name:
Remcos
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Signature
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 modify clipboard data
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
Disables UAC (registry)
Found evasive API chain (may stop execution after checking mutex)
Found malware configuration
Found stalling execution ending in API Sleep call
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
Sample uses process hollowing technique
Sigma detected: Remcos
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Detection:
remcos
Threat name:
Win32.Trojan.Remcos
Status:
Malicious
First seen:
2023-11-20 05:08:05 UTC
File Type:
PE (Exe)
Extracted files:
17
AV detection:
33 of 37 (89.19%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 2'875 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:remotehost (em ingl�s) evasion rat trojan upx
Behaviour
Modifies registry key
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
UPX packed file
Remcos
UAC bypass
Malware Config
C2 Extraction:
0.tcp.sa.ngrok.io:12792
Unpacked files
SH256 hash:
a99e7b5c232cb0f3241fc61d137d335e4778f75bc393be1356737be421330a9f
MD5 hash:
87861cda482e4cbf4ea58e5d1a212867
SHA1 hash:
bf3d7824818fc08f67f829c7494d5a810ab0e203
Detections:
Remcos
win_remcos_w0
win_remcos_auto
win_remcos_rat_unpacked
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
malware_windows_remcos_rat
SH256 hash:
66dd4b98d3e93fd0952848a182fefce3a962e41c1121d2bf32fd92b27bd794bf
MD5 hash:
8a8bded3a03d8c656fe52e8a49594729
SHA1 hash:
af759a533b2b7d6925a04882b101f361445b95fa
Malware family:
Remcos
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser |
|---|---|
| Author: | malware-lu |
| Rule name: | UPXv20MarkusLaszloReiser |
|---|---|
| Author: | malware-lu |
| Rule name: | upx_3 |
|---|---|
| Author: | Kevin Falcoz |
| Description: | UPX 3.X |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
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