MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8fabd89f985aae235b63098a58da4c32773e2aa81aae19f1e27467fd8924fc33. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8fabd89f985aae235b63098a58da4c32773e2aa81aae19f1e27467fd8924fc33
SHA3-384 hash: 572bddc8b202220e76e199e11a0512b70f5ce56aa5db9b398f03ae5af1c01b5fbf391314debced7ac2afa39883c6c9ff
SHA1 hash: 90824a5f8b91eb49b00e6b5a81fa8862c3e03d82
MD5 hash: 2da248b2e56ba13be75b9fc541b33b9a
humanhash: connecticut-five-nebraska-jupiter
File name:microA.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'809'408 bytes
First seen:2021-06-24 12:06:12 UTC
Last seen:2021-06-24 12:53:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:/RYTuO1BUshqYXc2Dw0VTHlhS27+Tlwkd/wXyDfA:KpDXpDXTTf7awa/wXyDo
Threatray 899 similar samples on MalwareBazaar
TLSH 2585D79C361171DFE817CA72EA645C74EA107CBA570BD203A09726DEA90EA97CF141F3
Reporter James_inthe_box
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
138
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
microA.exe
Verdict:
Malicious activity
Analysis date:
2021-06-24 12:09:38 UTC
Tags:
rat remcos stealer keylogger
Link:
https://app.any.run/tasks/a71071d2-5bf7-45c7-ac82-bbf518218969

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/168011/
Detection(s):
SecuriteInfo.com.Artemis2DA248B2E56B.10569.7022.UNOFFICIAL
Create hunting rule

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:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3329afce-b015-4ea3-bcdf-0bc5bb1d244e
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/807439
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
Found malware configuration
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
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
Sigma detected: WScript or CScript Dropper
Tries to delay execution (extensive OutputDebugStringW loop)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
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 Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 439850 Sample: microA.exe Startdate: 24/06/2021 Architecture: WINDOWS Score: 100 84 sdegreenfieldsdeeenf.duckdns.org 2->84 86 fieldsdegreenf.duckdns.org 2->86 88 3 other IPs or domains 2->88 106 Found malware configuration 2->106 108 Malicious sample detected (through community Yara rule) 2->108 110 Multi AV Scanner detection for dropped file 2->110 112 12 other signatures 2->112 14 microA.exe 6 2->14         started        18 remcos.exe 2->18         started        20 remcos.exe 3 2->20         started        signatures3 process4 file5 78 C:\Users\user\AppData\Roaming\rXwUmJ.exe, PE32 14->78 dropped 80 C:\Users\user\AppData\Local\...\tmp617B.tmp, XML 14->80 dropped 82 C:\Users\user\AppData\...\microA.exe.log, ASCII 14->82 dropped 136 Detected unpacking (changes PE section rights) 14->136 138 Detected unpacking (overwrites its own PE header) 14->138 140 Contains functionality to steal Chrome passwords or cookies 14->140 144 4 other signatures 14->144 22 microA.exe 4 5 14->22         started        25 schtasks.exe 1 14->25         started        142 Injects a PE file into a foreign processes 18->142 27 schtasks.exe 18->27         started        29 remcos.exe 18->29         started        signatures6 process7 file8 72 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 22->72 dropped 74 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 22->74 dropped 76 C:\Users\user\AppData\Local\...\install.vbs, data 22->76 dropped 31 wscript.exe 1 22->31         started        33 conhost.exe 25->33         started        35 conhost.exe 27->35         started        process9 process10 37 cmd.exe 1 31->37         started        process11 39 remcos.exe 4 37->39         started        42 conhost.exe 37->42         started        signatures12 120 Multi AV Scanner detection for dropped file 39->120 122 Detected unpacking (changes PE section rights) 39->122 124 Detected unpacking (creates a PE file in dynamic memory) 39->124 126 4 other signatures 39->126 44 remcos.exe 39->44         started        48 schtasks.exe 39->48         started        50 remcos.exe 39->50         started        52 conhost.exe 39->52         started        process13 dnsIp14 100 sdegreenfieldsdeeenf.duckdns.org 31.210.21.185, 6553 PLUSSERVER-ASN1DE Netherlands 44->100 102 fieldsdegreenf.duckdns.org 203.159.80.101, 49752, 49753, 49827 LOVESERVERSGB Netherlands 44->102 104 aaeeerbbbeee.duckdns.org 44->104 128 Writes to foreign memory regions 44->128 130 Allocates memory in foreign processes 44->130 132 Installs a global keyboard hook 44->132 134 Injects a PE file into a foreign processes 44->134 54 remcos.exe 44->54         started        57 remcos.exe 44->57         started        59 remcos.exe 44->59         started        63 4 other processes 44->63 61 conhost.exe 48->61         started        signatures15 process16 signatures17 114 Tries to steal Instant Messenger accounts or passwords 54->114 116 Tries to steal Mail credentials (via file access) 54->116 118 Tries to harvest and steal browser information (history, passwords, etc) 57->118 65 iexplore.exe 63->65         started        process18 process19 67 iexplore.exe 65->67         started        70 iexplore.exe 65->70         started        dnsIp20 90 github.com 140.82.121.3, 443, 49760, 49763 GITHUBUS United States 67->90 92 avatars.githubusercontent.com 185.199.109.133, 443, 49767, 49768 FASTLYUS Netherlands 67->92 94 js.monitor.azure.com 67->94 96 140.82.121.4, 443, 49778, 49779 GITHUBUS United States 70->96 98 185.199.111.133, 443, 49783, 49784 FASTLYUS Netherlands 70->98
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8fabd89f985aae235b63098a58da4c32773e2aa81aae19f1e27467fd8924fc33/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-06-24 12:05:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
114
AV detection:
15 of 28 (53.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r6v5rh4ylkxcgw3dbgffrwsmgj3t4kvidkxbt4pcort73cje7qzq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
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18e3f381f0a9ad36dce7659da7a713e05624e7efce8bdc465fb67cff7189f99b
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1f0a11fbabfc7a058b18eedd0d45186c7a3c17283939ac55ba0e0f252716bf68
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6b4cda8e0f766056eadbd9c59df82298fa4acbf7a6e526d36c4168e4f511bd8b
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9f977518ca7bee2b5930d2865dfd5bef35fe73a4f4bf63b8c4c000f81f749e37
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a972b68b050a973ba7815570e6b6d85c20629defc5c4c5bfd3f44abae041feb5
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f005a4eb054ec9fd5f2f997e844a879bcc51a1d3aebc7b236913eb56841487aa
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facf1bd37fa739f82bc10a7a6e7436b4871af89e3c8389270673e2dbb76200e4
RemcosRAT
+ 889 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:chrome persistence rat spyware stealer
Link:
https://tria.ge/reports/210624-1bfqa6wk66/
Behaviour
Creates scheduled task(s)
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
fieldsdegreenf.duckdns.org:6553
aaeeerbbbeee.duckdns.org:6553
sdegreenfieldsdeeenf.duckdns.org:6553
Unpacked files
SH256 hash:
64fd550196cfbf8f9854eb62b65e0f5ee3cc6319bd4f01f846e807239a1e250b
MD5 hash:
ce4ac3931a40013266cda2a02d011c61
SHA1 hash:
c1d78d27f8d6fcfb680d6fed61373da11b935d41
Detections:
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/2bda9e03-31e8-4763-a72e-080f31357ab3/
Parent samples :
8fabd89f985aae235b63098a58da4c32773e2aa81aae19f1e27467fd8924fc33
64d9ad7fa453939964d045971555233437f87c747989ff1d41f28b60258a4b97
f9807029dd75acb1884904779d4c7ae3af050a6d754fcbd71a015031a3e73e78
SH256 hash:
5bede9eedf6ae6df5a9d587c116c9583b31474c159c2b53486b000093cb3fde6
MD5 hash:
072eeac61b35d3f09edee4ff4f80f52d
SHA1 hash:
696fd9905a47e526470c2e234fef32f1ec1b74ad
Link:
https://www.unpac.me/results/2bda9e03-31e8-4763-a72e-080f31357ab3/
SH256 hash:
0c0b121f3ce5d3163702e797e474f1f1937ecd5a99fa0e58211380bd7fca4f6b
MD5 hash:
15dbe9c78dc90f65c94a70dde442db11
SHA1 hash:
0fa63230f2e029754ec21d571894df9bcefd7f18
Link:
https://www.unpac.me/results/2bda9e03-31e8-4763-a72e-080f31357ab3/
SH256 hash:
8fabd89f985aae235b63098a58da4c32773e2aa81aae19f1e27467fd8924fc33
MD5 hash:
2da248b2e56ba13be75b9fc541b33b9a
SHA1 hash:
90824a5f8b91eb49b00e6b5a81fa8862c3e03d82
Link:
https://www.unpac.me/results/2bda9e03-31e8-4763-a72e-080f31357ab3/
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/8fabd89f985aae235b63098a58da4c32773e2aa81aae19f1e27467fd8924fc33

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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/168011/

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