MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f3ac2facaae4e74a303e1c92b36c87372397fa19f93d3025cc6fa5c027a7b29. 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: 17


Intelligence 17 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4f3ac2facaae4e74a303e1c92b36c87372397fa19f93d3025cc6fa5c027a7b29
SHA3-384 hash: bf8058c5f6620b8293437993e6e8c6bd64571dbae6710796f13f9f3c8ca47df64fc1507ba7640f9ac9c9beed25b5dd48
SHA1 hash: ca9cd55224dec90f68981e1b7fc2e5fd07b2d9cd
MD5 hash: 8ba027e61920545c8b29c9c16e494b2f
humanhash: beer-cup-fix-black
File name:M V DOUGA Invoice waybill.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:570'416 bytes
First seen:2022-11-08 20:57:26 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 29b61e5a552b3a9bc00953de1c93be41 (174 x Formbook, 82 x AgentTesla, 81 x Loki)
ssdeep 12288:O8Kk0rvkBJ4VfnfzTuL8qNSc0eXH4x5mpeB/jX7:OvXowVfbTiHwFeXYx4oD7
Threatray 2'183 similar samples on MalwareBazaar
TLSH T171C4CD2C2669A805D0F58A30251FF6A5CCE9984784C2B73C6AFFEAED339560C1B17D71
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon ecf4969696d4d4dc (3 x NanoCore, 3 x AgentTesla, 1 x RemcosRAT)
Reporter GovCERT_CH
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
199
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
M V DOUGA Invoice waybill.exe
Verdict:
Malicious activity
Analysis date:
2022-11-08 20:58:29 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/0223a7ab-a82d-4720-b66d-05f39f13a2cd

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/330826/
Detection(s):
SecuriteInfo.com.Trojan.Garf.Gen.7.4503.19318.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Setting a keyboard event handler
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/50261/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/636ac2db470500d17a1ee526/reports/56ae1fb8-1a74-436b-886e-f0fc3de52110/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/6d1d96ef-97fe-45cc-91c3-431b925a35d9
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1108653
Signature
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
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Uses dynamic DNS services
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 741313 Sample: M V DOUGA Invoice waybill.exe Startdate: 08/11/2022 Architecture: WINDOWS Score: 100 43 Multi AV Scanner detection for domain / URL 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 6 other signatures 2->49 7 M V DOUGA Invoice waybill.exe 18 2->7         started        10 gtxb.exe 2->10         started        13 gtxb.exe 2->13         started        process3 file4 27 C:\Users\user\AppData\Local\...\tcjbwmh.exe, PE32 7->27 dropped 15 tcjbwmh.exe 1 2 7->15         started        53 Multi AV Scanner detection for dropped file 10->53 55 Machine Learning detection for dropped file 10->55 57 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 10->57 61 3 other signatures 10->61 19 gtxb.exe 10->19         started        59 Maps a DLL or memory area into another process 13->59 21 gtxb.exe 13->21         started        signatures5 process6 file7 29 C:\Users\user\AppData\Roaming\...\gtxb.exe, PE32 15->29 dropped 35 Multi AV Scanner detection for dropped file 15->35 37 Machine Learning detection for dropped file 15->37 39 Contains functionality to steal Chrome passwords or cookies 15->39 41 4 other signatures 15->41 23 tcjbwmh.exe 2 15 15->23         started        signatures8 process9 dnsIp10 31 xpremcuz300622.ddns.net 193.47.61.205, 3542, 49711, 49715 TH-AS-APTianhaiInfoTechCN Germany 23->31 33 geoplugin.net 178.237.33.50, 49712, 80 ATOM86-ASATOM86NL Netherlands 23->33 51 Installs a global keyboard hook 23->51 signatures11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4f3ac2facaae4e74a303e1c92b36c87372397fa19f93d3025cc6fa5c027a7b29/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-11-08 03:12:59 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
14 of 42 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j45mf6wkvzhhjiyd4heswnwionzds75bt6j5gas4y35fyat2pmuq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
058bce4a498b1f075cd7100d2bc46a205b7d808acde265293efca026125e1857
RemcosRAT
42848486deff7c04f76ad5d52d9ec293ffd07eae20d102781694db235106d459
RemcosRAT
43ee9abd28c74e30fb9f976a611937d082ac0c1772f620e90087f038a406c89c
RemcosRAT
617208cb1572a2d167753cb9a163fee04a6a5df5d75f555b14c79a1f3cb09d8e
RemcosRAT
7ab5b185082f0aea6bf04ee4a54b3170205e3b2cdc3f547ce1977e0f34c95916
RemcosRAT
b7deac676ee163bb88faedd6e4a460b1fd0a0154823a4dfcda9b4804e05a4ba8
RemcosRAT
c5fe9955259f76f4b03bd65fd5e146803690d8057d7ef474c3b1b8eec0b1b928
RemcosRAT
de739f74131f337f9b6f5f2597a325c62eae0f3a5cf333e77717a6cb1779303f
RemcosRAT
fd01d960ca2725e756f9e852045ab8a1d971c8b5881c0883d87f73a8278f79d4
RemcosRAT
+ 2'173 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:xp_no startup persistence rat
Link:
https://tria.ge/reports/221108-zr5vysgff3/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
xpremcuz300622.ddns.net:3542
Unpacked files
SH256 hash:
65a1d113f7dc5ec1f3e35c6cd4df378cc412cf71d65deb6b3d0dc3f3b26ddd71
MD5 hash:
ab7e54fec4c511c9de20e31d8415b5cf
SHA1 hash:
a6d52521ffbfc9dad59a7c464c07c7abd983f586
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/d83baeec-4ccf-44c9-8a44-e05f7a4b6a9b/
Parent samples :
98c0c891e2c4aff954bd915bceb34153a4f732ef8b7743162c6faaa079161e84
4f3ac2facaae4e74a303e1c92b36c87372397fa19f93d3025cc6fa5c027a7b29
c03cfddda1ce6811ac0aa6cd6d9957e688a3fd37c02a16c15af285bff2c9b04f
c51b5ab4f58954b8e389c8fbd8b7774de8365a5222a6a34eeb2a13d152245b83
6c0f5a9bf9bfd84be91f3d84335b63ac95ac2b227fedc5de439971577328ac30
6c405e0fb6fa88a355b6addac57f8663af6a0e2256bc8d23da104567360ce6f9
fa965dc6edbb0e244cef4ecab1dabb2d04c9c174e42ac25c60f463237bcea16b
d3a2043efc6af7c4ab5141626759c855ae393005862d78c7e325ba585684c5b0
c7e2ce7b8a6da88127cbb0730c2b8b9869f7f0e6a4ba831e34d1aa18122ce5e2
SH256 hash:
5e640a6971cbc4bef2a5683b5055131b7e573256298708ae3a818b381011ecbe
MD5 hash:
499572d2f4c38ea2313dd54dbe0c5aab
SHA1 hash:
2dab3630b17e9114cdb457179ad84b7a6d521b62
Link:
https://www.unpac.me/results/d83baeec-4ccf-44c9-8a44-e05f7a4b6a9b/
SH256 hash:
37a8ee8c078a5373eb649ea6f627bb241fd9a57652c296664fa74fd9014e97eb
MD5 hash:
adb5004a8fc5793e17d38a0b629e0606
SHA1 hash:
f7bcdf518717ed6b16cb24af101d3eb8d2a87ed7
Link:
https://www.unpac.me/results/d83baeec-4ccf-44c9-8a44-e05f7a4b6a9b/
SH256 hash:
4f3ac2facaae4e74a303e1c92b36c87372397fa19f93d3025cc6fa5c027a7b29
MD5 hash:
8ba027e61920545c8b29c9c16e494b2f
SHA1 hash:
ca9cd55224dec90f68981e1b7fc2e5fd07b2d9cd
Link:
https://www.unpac.me/results/d83baeec-4ccf-44c9-8a44-e05f7a4b6a9b/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4f3ac2facaae/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/4f3ac2facaae4e74a303e1c92b36c87372397fa19f93d3025cc6fa5c027a7b29

File information

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

Malspam

RemcosRAT

Executable exe 4f3ac2facaae4e74a303e1c92b36c87372397fa19f93d3025cc6fa5c027a7b29

(this sample)

  
Dropped by
RemcosRAT
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/330826/

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