MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 881b9954a4f1debc7e45fecb6072f05daa542c368af208156fd624d5b5fabc95. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 881b9954a4f1debc7e45fecb6072f05daa542c368af208156fd624d5b5fabc95
SHA3-384 hash: cc7256898f8661bf7304b5279b5653107e5295890f99e4f52763a1ffab299101a47f44fbf240102a67cc71a09da7e8f9
SHA1 hash: a667c16add4d0c36b496eb451201f71fe36a179d
MD5 hash: 889e1150cd51af77640227dbe28a6cd4
humanhash: jersey-pluto-maine-cup
File name:Lainauspyyntö Rakla -lasku 2023 - 03 - 13.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:584'264 bytes
First seen:2023-03-20 07:25:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:gKtfdZEO19qlCYlA0Ju2mbWwYaIiY90Mj5gQh3S2hWyLzK+fv0FU:gKLZEO1YlthJu2mbJJnMj5gG35QYG+fS
Threatray 1'701 similar samples on MalwareBazaar
TLSH T1D3C423836AD89A02D0CD52B515800B1C3F32B5957B82DE675CC6B1FD1AB37CE26CA397
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon e4dcd8c4d4d4c4d4 (95 x AgentTesla, 51 x Formbook, 12 x RemcosRAT)
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
211
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Lainauspyyntö Rakla -lasku 2023 - 03 - 13.exe
Verdict:
Malicious activity
Analysis date:
2023-03-20 07:35:03 UTC
Tags:
remcos
Link:
https://app.any.run/tasks/1ff8ef96-fc84-4a56-bc4b-44f9b71f06b2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/375783/
Detection(s):
SecuriteInfo.com.Malware.PDB-71.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Launching a process
Creating a file
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated overlay packed
Link:
https://www.filescan.io/uploads/64180a5fc60b3295f52c0790/reports/53adfd8a-3402-4e42-b23c-0d9f950afd1a/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/881b9954a4f1debc7e45fecb6072f05daa542c368af208156fd624d5b5fabc95
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/b64d363f-50fb-4f65-b855-0a4ced69a835
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1197378
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 830279 Sample: Lainauspyynt#U00f6_Rakla_-l... Startdate: 20/03/2023 Architecture: WINDOWS Score: 100 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 Antivirus / Scanner detection for submitted sample 2->43 45 6 other signatures 2->45 7 Lainauspyynt#U00f6_Rakla_-lasku_2023_-_03_-_13.exe 5 2->7         started        11 RZTHXHelper.exe 2 2->11         started        13 RZTHXHelper.exe 2 2->13         started        process3 file4 23 C:\Users\user\AppData\...\RZTHXHelper.exe, PE32 7->23 dropped 25 Lainauspyynt#U00f6...3_-_03_-_13.exe.log, ASCII 7->25 dropped 47 Writes to foreign memory regions 7->47 49 Injects a PE file into a foreign processes 7->49 15 aspnet_compiler.exe 2 13 7->15         started        19 powershell.exe 1 22 7->19         started        51 Antivirus detection for dropped file 11->51 53 Multi AV Scanner detection for dropped file 11->53 55 Machine Learning detection for dropped file 11->55 signatures5 process6 dnsIp7 27 obologs.work.gd 185.156.175.35, 34346, 49699 M247GB Romania 15->27 29 geoplugin.net 178.237.33.50, 49700, 80 ATOM86-ASATOM86NL Netherlands 15->29 31 Contains functionality to bypass UAC (CMSTPLUA) 15->31 33 Contains functionality to steal Chrome passwords or cookies 15->33 35 Contains functionality to steal Firefox passwords or cookies 15->35 37 Delayed program exit found 15->37 21 conhost.exe 19->21         started        signatures8 process9
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/881b9954a4f1debc7e45fecb6072f05daa542c368af208156fd624d5b5fabc95/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-03-14 04:28:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ranzsvfe6hply7sf73fwa4xqlwvfilbwrlzaqflp2ysnlnp2xskq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
02ced6da9cf24901681948deae308d36975cb623dcc6735f2142f4252bc7e197
RemcosRAT
032f8672b774c3a0edd3b84b0f809e1901319a2b0a4a60704e75f92bdac4f7bb
RemcosRAT
23dd65161a7f297125c40f5c9e12d9c0bc9c314021a74de9d47ec8bc13146b18
RemcosRAT
4bfea5eeb97d0ca4f3f2edd8114048e9a14f43f89187c55f29f2142cdef8da9a
RemcosRAT
71418a78c949e7f318a148ada4fd4a6701020a00707c426e3a2bf021966d03ce
RemcosRAT
844d71676420926ac69a998eecb47e4873ba8ed146ae2385770a530a2fffcf36
RemcosRAT
96c3eda0f05d27702d5af7f5e0c626da24c93013804fd3ebc35241164eafdbdf
RemcosRAT
aa8f0cb77774a1f43eefe9952ce8750a2398b6f85abcd11c974ba8fd0c74b30a
RemcosRAT
dabb657acfa0d239bcd7f26fa84eb567790a3ab47d46bbf1a3bb9f5c4e6e3b25
RemcosRAT
+ 1'691 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost persistence rat
Link:
https://tria.ge/reports/230320-h8za3acc63/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Remcos
Malware Config
C2 Extraction:
obologs.work.gd:34346
Unpacked files
SH256 hash:
6b78a3e99cdbf3456a743ea379d3bff2d526bab1143d24ea4f5327df65cd4f4c
MD5 hash:
604b6d6440d02b3abe41ec6d537f3ed8
SHA1 hash:
791e7f925ed366bb7bec11d004df4a9861b6e889
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/53c881c4-3feb-4144-903f-8109bc29f519/
Parent samples :
79544f55395a00102be1fadae62f95c595a8c285e53ba278f49e1a55b20fa063
a9965688e4d34b92334193a59ab471709521d24ea65f1f9e97caaab3470e1e25
153f00cfcabb3fc9bf6ca01da20de1702cae1957d4b0fb998db99ad502896f76
844d71676420926ac69a998eecb47e4873ba8ed146ae2385770a530a2fffcf36
881b9954a4f1debc7e45fecb6072f05daa542c368af208156fd624d5b5fabc95
d1698bf562afeb9d40e79a3ed0acc152abb2dfed815e0f6d8a91346916815a7f
SH256 hash:
bfa12a2456d40d6c32a1f4e35bd43c81f6f67466234faed8fec19397d0e6d808
MD5 hash:
7a7927bac28be846b2fd2a5d10ba0676
SHA1 hash:
67a7b8616fc8e7aa7bb7a6e2521548e67a7caa2d
Link:
https://www.unpac.me/results/53c881c4-3feb-4144-903f-8109bc29f519/
Parent samples :
fb110b1db7c02725d6cb0953cf153a2b5e158d358db136aece90ac06d79cb07d
80dd6d009a2b7ab7aa393d063048320db5ea3920a4fd9cca4a0a76f12183273f
SH256 hash:
881b9954a4f1debc7e45fecb6072f05daa542c368af208156fd624d5b5fabc95
MD5 hash:
889e1150cd51af77640227dbe28a6cd4
SHA1 hash:
a667c16add4d0c36b496eb451201f71fe36a179d
Link:
https://www.unpac.me/results/53c881c4-3feb-4144-903f-8109bc29f519/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/881b9954a4f1/report/overview.html
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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

Malspam

RemcosRAT

Executable exe 881b9954a4f1debc7e45fecb6072f05daa542c368af208156fd624d5b5fabc95

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/375783/

Comments