MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a06b22bc855434e422e2361ed4e07e88c5958b5bebecc34020c3c011b0ce03b2. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a06b22bc855434e422e2361ed4e07e88c5958b5bebecc34020c3c011b0ce03b2
SHA3-384 hash: 1603824dc385a94910909c896e8d3f56e1852edae0af7b6195d173bce22a88525ce4ee7ba05d105d46964e6b92aac649
SHA1 hash: be8179b069807d89c58954bf20d255ad119cf565
MD5 hash: bb43b1a9498275be7e321b2bc217096f
humanhash: glucose-colorado-alpha-yellow
File name:bb43b1a9498275be7e321b2bc217096f
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:989'184 bytes
First seen:2023-01-28 02:09:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:+SkOvbnR8ey/ZhvQXDCzFqIGc9EhsZ0Ap5nk4DP934wWcmBe1vB2AhZZZUZJG3Cs:QvvnXGctZnp5nkoPdvvB22ZoayXZV8J
Threatray 5'446 similar samples on MalwareBazaar
TLSH T1F125DF4023EC9E45F6BE4B7996B9405217B77C927573E21D8EC130DE4EB2B00AB46B27
TrID 61.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.1% (.SCR) Windows screen saver (13097/50/3)
8.9% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.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 7eeceeccd6c2f2f2 (14 x Formbook, 9 x AgentTesla, 8 x RemcosRAT)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
233
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
bb43b1a9498275be7e321b2bc217096f
Verdict:
Malicious activity
Analysis date:
2023-01-28 02:11:29 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/c416ddc8-503e-474e-b7d4-1cf9c3f26f37

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/357659/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a process from a recently created file
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63d483fefcc41339192ec9da/reports/db26b744-3217-4efc-b5f8-fd11f5b07493/overview
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/89d30fbc-89a0-4c01-82c5-d4c8ce87e2d9
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1160660
Signature
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
Installs a global keyboard hook
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 793397 Sample: GWe13uBse8.exe Startdate: 28/01/2023 Architecture: WINDOWS Score: 100 47 richardskoug34.ddns.net 2->47 65 Malicious sample detected (through community Yara rule) 2->65 67 Antivirus detection for URL or domain 2->67 69 Multi AV Scanner detection for submitted file 2->69 71 8 other signatures 2->71 9 GWe13uBse8.exe 3 2->9         started        13 ros.exe 2 2->13         started        15 ros.exe 2 2->15         started        17 ros.exe 2 2->17         started        signatures3 process4 file5 45 C:\Users\user\AppData\...behaviorgraphWe13uBse8.exe.log, ASCII 9->45 dropped 77 Contains functionality to bypass UAC (CMSTPLUA) 9->77 79 Contains functionality to steal Chrome passwords or cookies 9->79 81 Contains functionality to steal Firefox passwords or cookies 9->81 83 Delayed program exit found 9->83 19 GWe13uBse8.exe 2 3 9->19         started        22 ros.exe 13->22         started        26 ros.exe 13->26         started        28 ros.exe 15->28         started        30 ros.exe 15->30         started        32 ros.exe 17->32         started        signatures6 process7 dnsIp8 41 C:\Users\user\AppData\Roaming\ros.exe, PE32 19->41 dropped 43 C:\Users\user\...\ros.exe:Zone.Identifier, ASCII 19->43 dropped 34 ros.exe 3 19->34         started        51 richardskoug34.ddns.net 22->51 75 Installs a global keyboard hook 22->75 53 richardskoug34.ddns.net 28->53 55 192.168.2.1 unknown unknown 28->55 57 richardskoug34.ddns.net 32->57 file9 signatures10 process11 signatures12 59 Multi AV Scanner detection for dropped file 34->59 61 Machine Learning detection for dropped file 34->61 63 Injects a PE file into a foreign processes 34->63 37 ros.exe 2 1 34->37         started        process13 dnsIp14 49 richardskoug34.ddns.net 185.246.220.33, 49684, 49685, 49686 LVLT-10753US Germany 37->49 73 Installs a global keyboard hook 37->73 signatures15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a06b22bc855434e422e2361ed4e07e88c5958b5bebecc34020c3c011b0ce03b2/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-01-26 14:07:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
19 of 25 (76.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ubvsfpefkq2oiixcgypnjyd6rdczlc235pwmgqbaypabdmgoaoza._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
032f8672b774c3a0edd3b84b0f809e1901319a2b0a4a60704e75f92bdac4f7bb
RemcosRAT
18a39f6193c69dae7ea38aa9dd25fddabdb651c4276e242d0b585bd13c49c3a9
RemcosRAT
23dd65161a7f297125c40f5c9e12d9c0bc9c314021a74de9d47ec8bc13146b18
RemcosRAT
2bff54b9373397bb78dc3dd57f37b85affb564edec73fbb265e9a14d313a2a1d
RemcosRAT
5f61b50531659487b56d97323a53c7c58445a62fb9f47489cd07b38feb3d4527
RemcosRAT
69b7150f7be7cfd685c50328e9554d28d99e9f7babdf19eb10ea350a3658f2ac
RemcosRAT
a2cbf70ab3ebedd2c768816596fade8e94d1dd0d6025001ac59a71860e45b808
RemcosRAT
+ 5'436 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:wazy-host 2023 persistence rat
Link:
https://tria.ge/reports/230128-clpv8adg97/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
richardskoug34.ddns.net:7665
Unpacked files
SH256 hash:
8018db9b69307ae830ebbb3906d70d946710b16869e22f636a237749bfa968c9
MD5 hash:
d0810f9bc947f698a534a0f517d12ee8
SHA1 hash:
e071c219670e50bd7642528e7953b28e7679f1b7
Link:
https://www.unpac.me/results/f0c646e3-8498-444d-9868-9b824f1fa301/
SH256 hash:
411569f9f0b865c651adc1234d23f86cd98fe5cd641704702276e9882be113b6
MD5 hash:
7648892096f37af50468509c5b051180
SHA1 hash:
a56a074c2770152761f6c4975db0e9f7d57f8cda
Link:
https://www.unpac.me/results/f0c646e3-8498-444d-9868-9b824f1fa301/
SH256 hash:
bfc89b0db6ba5466cae4669ab7d6384ae307d20f8a14dfe7f11edb001861ea04
MD5 hash:
832914bf343123e83f96fbd4045ad27a
SHA1 hash:
68652bbaa0ce3c3a573e02c1c3d48bf49cc7df6a
Link:
https://www.unpac.me/results/f0c646e3-8498-444d-9868-9b824f1fa301/
SH256 hash:
15affadbd57e609f1fb002554e3d26f9e364007034b5c481d1a8d3998318fca2
MD5 hash:
818b480ae76f761505ba4eb2039b0367
SHA1 hash:
5fbb448785d7c74dc158fa07d4f73c33fd821422
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/f0c646e3-8498-444d-9868-9b824f1fa301/
Parent samples :
a06b22bc855434e422e2361ed4e07e88c5958b5bebecc34020c3c011b0ce03b2
8f35ae02b5ba88554c9d41fb1cd9aaa916a8136fa8d442dcc894ac46f593d7c0
da54774eea2461e908c742776fbf45b1fd5a493a847e2572762ad0cd6f3c8277
SH256 hash:
ff1b42ea7d56a37eae801adbddb7116f52a4664c0b41302736f522852edc2747
MD5 hash:
89ac57478044c57c7195943116a521e0
SHA1 hash:
1ff2bafeed795423e3538d810bda8e1e3fcdcfa5
Link:
https://www.unpac.me/results/f0c646e3-8498-444d-9868-9b824f1fa301/
SH256 hash:
a06b22bc855434e422e2361ed4e07e88c5958b5bebecc34020c3c011b0ce03b2
MD5 hash:
bb43b1a9498275be7e321b2bc217096f
SHA1 hash:
be8179b069807d89c58954bf20d255ad119cf565
Link:
https://www.unpac.me/results/f0c646e3-8498-444d-9868-9b824f1fa301/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a06b22bc8554/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/a06b22bc855434e422e2361ed4e07e88c5958b5bebecc34020c3c011b0ce03b2

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: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.

Web download

RemcosRAT

Executable exe a06b22bc855434e422e2361ed4e07e88c5958b5bebecc34020c3c011b0ce03b2

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/357659/
  
URLhaus
https://urlhaus.abuse.ch/url/2520391/

Comments


Avatar
zbet commented on 2023-01-28 02:09:56 UTC

url : hxxp://85.208.136.4/WWS.exe