MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1b385afa0592f1fc9e0eaacd751beb5e15ff4151f2ac98e0166f29955690b9c. 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: 14


Intelligence 14 IOCs 1 YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a1b385afa0592f1fc9e0eaacd751beb5e15ff4151f2ac98e0166f29955690b9c
SHA3-384 hash: 6cad792421e8a60a0274938f8dfc9a9c5b478df00b0b82279d13167d763c5b4d53025ddd7e8ee946d7bc0ed639ab31e5
SHA1 hash: 45bb8a1acb703c823289d0e4c39500cb116f6684
MD5 hash: 2851dd4b82d977cc7bd865d5abecc93a
humanhash: washington-twelve-crazy-oregon
File name:2851dd4b82d977cc7bd865d5abecc93a.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'321'472 bytes
First seen:2022-03-14 19:25:19 UTC
Last seen:2022-04-20 10:22:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:IOxpzz+PJLrojMhsxD2qt5FFTd0rg9jFc/k8cbngrnvGuQ87kc/l7n:IC38LrzsD2yFFTd5jCfcbngrnOTil
Threatray 2'956 similar samples on MalwareBazaar
TLSH T10855E1E2FF4C837EDC14323BC1E909701FF51A8A2922BF496A8D42DD055BACF199652D
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
194.31.98.58:2405

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
194.31.98.58:2405 https://threatfox.abuse.ch/ioc/395086/

Intelligence

File Origin
# of uploads :
3
# of downloads :
232
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/250405/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1231.24341.1310.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Setting a keyboard event handler
Sending a custom TCP request
Forced shutdown of a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
coinminer control.exe obfuscated packed remcos replace.exe
Link:
https://www.filescan.io/uploads/622f96d0dfdfa8501c9f99bb/reports/d2af996b-6bc8-4a05-a412-7a4433717183/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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/dd934ce3-120e-4763-96c7-138ece4235d6
Result
Threat name:
AsyncRAT Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/956472
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus detection for dropped file
Contains functionality to inject code into remote processes
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
Detected unpacking (creates a PE file in dynamic memory)
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: Suspect Svchost Activity
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Sigma detected: Suspicious Svchost Process
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected AsyncRAT
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 588956 Sample: MP3yfqQKhh.exe Startdate: 14/03/2022 Architecture: WINDOWS Score: 100 64 primetoolz.duckdns.org 2->64 66 googlehosted.l.googleusercontent.com 2->66 68 clients2.googleusercontent.com 2->68 92 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->92 94 Malicious sample detected (through community Yara rule) 2->94 96 Multi AV Scanner detection for dropped file 2->96 98 13 other signatures 2->98 10 MP3yfqQKhh.exe 7 2->10         started        signatures3 process4 file5 54 C:\Users\user\AppData\...\tEylTjWpuQEtup.exe, PE32 10->54 dropped 56 C:\...\tEylTjWpuQEtup.exe:Zone.Identifier, ASCII 10->56 dropped 58 C:\Users\user\AppData\Local\...\tmpA431.tmp, XML 10->58 dropped 60 C:\Users\user\AppData\...\MP3yfqQKhh.exe.log, ASCII 10->60 dropped 110 Detected unpacking (creates a PE file in dynamic memory) 10->110 112 Tries to steal Mail credentials (via file registry) 10->112 114 Contains functionalty to change the wallpaper 10->114 116 6 other signatures 10->116 14 MP3yfqQKhh.exe 3 5 10->14         started        19 powershell.exe 25 10->19         started        21 schtasks.exe 1 10->21         started        signatures6 process7 dnsIp8 74 primetoolz.duckdns.org 194.31.98.58, 2404, 2405, 49779 BURSABILTR Netherlands 14->74 76 192.168.2.1 unknown unknown 14->76 62 C:\Users\user\AppData\Roaming\dwn.exe, PE32 14->62 dropped 84 Writes to foreign memory regions 14->84 86 Allocates memory in foreign processes 14->86 88 Installs a global keyboard hook 14->88 90 Injects a PE file into a foreign processes 14->90 23 dwn.exe 14->23         started        26 MP3yfqQKhh.exe 14->26         started        28 svchost.exe 12 14->28         started        34 4 other processes 14->34 30 conhost.exe 19->30         started        32 conhost.exe 21->32         started        file9 signatures10 process11 signatures12 100 Antivirus detection for dropped file 23->100 102 Multi AV Scanner detection for dropped file 23->102 104 Machine Learning detection for dropped file 23->104 106 Tries to steal Instant Messenger accounts or passwords 26->106 108 Tries to steal Mail credentials (via file / registry access) 26->108 36 chrome.exe 28->36         started        39 chrome.exe 28->39         started        41 chrome.exe 34->41         started        43 conhost.exe 34->43         started        45 reg.exe 34->45         started        process13 dnsIp14 70 192.168.2.4, 137, 138, 2404 unknown unknown 36->70 72 239.255.255.250 unknown Reserved 36->72 47 chrome.exe 36->47         started        50 chrome.exe 39->50         started        52 chrome.exe 41->52         started        process15 dnsIp16 78 part-0017.t-0009.fb-t-msedge.net 13.107.253.45, 443, 49797, 49798 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 47->78 80 accounts.google.com 142.250.203.109, 443, 49784 GOOGLEUS United States 47->80 82 8 other IPs or domains 47->82
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a1b385afa0592f1fc9e0eaacd751beb5e15ff4151f2ac98e0166f29955690b9c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-13 14:19:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
19 of 27 (70.37%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ugzyll5alexr7spa5kwnoun6wxqv75avd4vmtdqbm3zjsvljbooa._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
remcos
Create hunting rule
Similar samples:
361ea662d75ba904bd3f0fbba782ef03eeab294f6dd736b79090fcfc2dd25166
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a5235adab75f69fd47b814a81ed89fe195e9a37e59c742e42363379742fc3b43
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cc93c7587dba9e4af2265a77a349230cb8ab0a0d8c524f4cfad4886fad7a34ab
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fa7229938d7109be9b5947f67058cb3cab1d366ababae65b83786b80584a160a
RemcosRAT
+ 2'946 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat family:remcos botnet:built botnet:default brand:microsoft collection evasion phishing rat spyware stealer trojan
Link:
https://tria.ge/reports/220314-x5h71abdh4/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies Internet Explorer settings
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Detected potential entity reuse from brand microsoft.
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
.NET Reactor proctector
Async RAT payload
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
AsyncRat
Remcos
UAC bypass
Malware Config
C2 Extraction:
primetoolz.duckdns.org:2404
primetoolz.duckdns.org:2401
primetoolz.duckdns.org:2402
primetoolz.duckdns.org:2403
primetoolz.duckdns.org:2405
Unpacked files
SH256 hash:
eea9da5eca7a4f24443cc1f7592238c1f81ed7b1de2d62c6ff1f361f6ccf8185
MD5 hash:
a07fa664ccf68517f1d6ea4f808bd391
SHA1 hash:
efe222704aebdb3b96480be08262a10661e102ed
Link:
https://www.unpac.me/results/e6883e7c-807a-4ede-918f-5889d4ed5411/
SH256 hash:
cc0a183cc6e4d6a7b72b28da149abdc4ab7ae59fb83841893c936caafafd88b4
MD5 hash:
e4886208f9fd5fd774041856ffd77f80
SHA1 hash:
ca24ca3ca67d30a7a18104a6eff7aa28a637ab51
Link:
https://www.unpac.me/results/e6883e7c-807a-4ede-918f-5889d4ed5411/
SH256 hash:
ea4b0eaa550900507a45707e138003ee421d1c2ef28adef5ee9517586b93b8dd
MD5 hash:
4df635058c3a8b2f64f3bf04a8bc1eaf
SHA1 hash:
c26bd979e9877dee3d1060f605f0fe9969e9b9dc
Link:
https://www.unpac.me/results/e6883e7c-807a-4ede-918f-5889d4ed5411/
SH256 hash:
9b00e2fa33ad72dec22a5e107ab6886da72bbe0bed89a721e877c1dc3ce6a662
MD5 hash:
b4c9c16228f0ee1de70ffc6264fb720c
SHA1 hash:
437049e452a511e220abdb32df695cdf07f5a7d0
Link:
https://www.unpac.me/results/e6883e7c-807a-4ede-918f-5889d4ed5411/
SH256 hash:
a1b385afa0592f1fc9e0eaacd751beb5e15ff4151f2ac98e0166f29955690b9c
MD5 hash:
2851dd4b82d977cc7bd865d5abecc93a
SHA1 hash:
45bb8a1acb703c823289d0e4c39500cb116f6684
Link:
https://www.unpac.me/results/e6883e7c-807a-4ede-918f-5889d4ed5411/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/a1b385afa059/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a1b385afa0592f1fc9e0eaacd751beb5e15ff4151f2ac98e0166f29955690b9c

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:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Create hunting rule
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
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.

Cape
Cape
https://www.capesandbox.com/analysis/250405/

Comments