remcos | a40626fbe1122175c403f8510e1f6ad41cee213a87ce8252305e32e5071a170a

Analysis

max time kernel
140s
max time network
156s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:15 UTC

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General

Target

bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe
Size

1.7MB
MD5

dffcd11d476c58ec3faa380cc679d6cd
SHA1

809b2bdeb0485b409f0fef3cab124eec8331cc95
SHA256

bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139
SHA512

cf9219060cc1df30f0945fe77964855996d15a93efea373cbee03506335bad7bc02a0f12d82c630d0ec701089a6883bc0f63f9e396c7f53a27cfb5356a050bfd
SSDEEP

24576:0D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjoIK:0p7E+QrFUBgq2dK

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

213.183.58.19:4000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Executes dropped EXE 2 IoCs

pid	Process
2976	sbietrcl.exe
2664	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2976 set thread context of 2664	2976	sbietrcl.exe	30

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe
2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe
2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe
2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe
2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe
2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe
2976	sbietrcl.exe
2976	sbietrcl.exe
2976	sbietrcl.exe
2976	sbietrcl.exe
2976	sbietrcl.exe
2976	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe
Token: SeDebugPrivilege	2976	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2664	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2976	2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe	29
PID 2268 wrote to memory of 2976	2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe	29
PID 2268 wrote to memory of 2976	2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe	29
PID 2268 wrote to memory of 2976	2268	bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe	29
PID 2976 wrote to memory of 2664	2976	sbietrcl.exe	30
PID 2976 wrote to memory of 2664	2976	sbietrcl.exe	30
PID 2976 wrote to memory of 2664	2976	sbietrcl.exe	30
PID 2976 wrote to memory of 2664	2976	sbietrcl.exe	30
PID 2976 wrote to memory of 2664	2976	sbietrcl.exe	30
PID 2976 wrote to memory of 2664	2976	sbietrcl.exe	30
PID 2976 wrote to memory of 2664	2976	sbietrcl.exe	30
PID 2976 wrote to memory of 2664	2976	sbietrcl.exe	30
PID 2976 wrote to memory of 2664	2976	sbietrcl.exe	30
PID 2976 wrote to memory of 2664	2976	sbietrcl.exe	30

C:\Users\Admin\AppData\Local\Temp\bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe
"C:\Users\Admin\AppData\Local\Temp\bd68ca7605316450c87b9218d2dbe19d8c5694e07b93f320f3ca4a9ad902c139.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2976
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2664

Network

DNS

www.microsoft.com

Remote address:

8.8.8.8:53

Request

www.microsoft.com

IN A

Response

www.microsoft.com

IN CNAME

www.microsoft.com-c-3.edgekey.net

www.microsoft.com-c-3.edgekey.net

IN CNAME

www.microsoft.com-c-3.edgekey.net.globalredir.akadns.net

www.microsoft.com-c-3.edgekey.net.globalredir.akadns.net

IN CNAME

e13678.dscb.akamaiedge.net

e13678.dscb.akamaiedge.net

IN A

23.192.18.101
GET

http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl

Remote address:

23.192.18.101:80

Request

GET /pkiops/crl/MicCodSigPCA2011_2011-07-08.crl HTTP/1.1
Connection: Keep-Alive
Accept: */*
If-Modified-Since: Mon, 03 Jun 2024 21:25:24 GMT
User-Agent: Microsoft-CryptoAPI/6.1
Host: www.microsoft.com

Response

HTTP/1.1 200 OK

Content-Length: 1078
Content-Type: application/octet-stream
Content-MD5: HqJzZuA065RHozzmOcAUiQ==
Last-Modified: Tue, 14 Jan 2025 20:41:31 GMT
ETag: 0x8DD34DBD43549F4
x-ms-request-id: 90d94cda-601e-004e-55c9-667962000000
x-ms-version: 2009-09-19
x-ms-lease-status: unlocked
x-ms-blob-type: BlockBlob
Date: Sat, 22 Mar 2025 06:22:44 GMT
Connection: keep-alive
TLS_version: UNKNOWN
ms-cv: CASMicrosoftCV165793ff.0
ms-cv-esi: CASMicrosoftCV165793ff.0
X-RTag: RT
DNS

crl.microsoft.com

Remote address:

8.8.8.8:53

Request

crl.microsoft.com

IN A

Response

crl.microsoft.com

IN CNAME

crl.www.ms.akadns.net

crl.www.ms.akadns.net

IN CNAME

a1363.dscg.akamai.net

a1363.dscg.akamai.net

IN A

2.19.252.157

a1363.dscg.akamai.net

IN A

2.19.252.143
GET

http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

Remote address:

2.19.252.157:80

Request

GET /pki/crl/products/MicRooCerAut2011_2011_03_22.crl HTTP/1.1
Connection: Keep-Alive
Accept: */*
If-Modified-Since: Thu, 11 Jul 2024 01:45:51 GMT
User-Agent: Microsoft-CryptoAPI/6.1
Host: crl.microsoft.com

Response

HTTP/1.1 200 OK

Content-Length: 825
Content-Type: application/octet-stream
Content-MD5: O14L1mQEVqdJ2RVebBNXJw==
Last-Modified: Wed, 26 Feb 2025 21:48:51 GMT
ETag: 0x8DD56AF5BD2A499
Server: Windows-Azure-Blob/1.0 Microsoft-HTTPAPI/2.0
x-ms-request-id: 42091eff-701e-0052-4a9a-882b02000000
x-ms-version: 2009-09-19
x-ms-lease-status: unlocked
x-ms-blob-type: BlockBlob
Date: Sat, 22 Mar 2025 06:22:44 GMT
Connection: keep-alive

213.183.58.19:4000

sbietrcl.exe

152 B
3
23.192.18.101:80

http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl

http

393 B
1.7kB
4
4

HTTP Request

GET http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl

HTTP Response

200
2.19.252.157:80

http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

http

457 B
2.8kB
5
5

HTTP Request

GET http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

HTTP Response

200
213.183.58.19:4000

sbietrcl.exe

152 B
3
213.183.58.19:4000

sbietrcl.exe

152 B
3
213.183.58.19:4000

sbietrcl.exe

152 B
3
213.183.58.19:4000

sbietrcl.exe

152 B
3
213.183.58.19:4000

sbietrcl.exe

152 B
3

8.8.8.8:53

www.microsoft.com

dns

63 B
230 B
1
1

DNS Request

www.microsoft.com

DNS Response

23.192.18.101
8.8.8.8:53

crl.microsoft.com

dns

63 B
162 B
1
1

DNS Request

crl.microsoft.com

DNS Response

2.19.252.157

2.19.252.143

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
1494cbd7fb63b13be8187768a896a64c

SHA1
5d7996678cfbaae573a60b98e7acf44eb1149e4c

SHA256
820d984578f4ff37aad29e9f1ddcb71e657333cc129e2ba21c586ba7ce5b0c87

SHA512
d69b7b668e049d0384188e8a8c5ba115255af40ee5ccdddb3ede3c32b4ed16e7a3b0c4b0692ff9ef12632f2da3da9c8cfadd983ce7da2d088524c2f97f0a0826

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab2E60.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
1.7MB

MD5
3a62314d191188f661faba8a5c13054c

SHA1
512969817686043ae7a7027ac06df6bf3a5e83fc

SHA256
38308b1cd8813d353d06ed631fa585c8a88d33cafbf63523ad522fce1be5bae5

SHA512
f5bd2c133f367145084ba75387804c3f18f4c5b488e88112d4eebb3ab8dbf7ff2c8b9cac6cc15eee15459aa0c615c98a129db6086c6e361fb8b41f314a4b4bea

Download Submit
memory/2268-11-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2268-13-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2268-12-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2268-0-0x0000000074201000-0x0000000074202000-memory.dmp

Filesize
4KB

Download
memory/2268-8-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2268-31-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2664-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-69-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-54-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2664-52-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-65-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-60-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2664-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2976-32-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2976-66-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2976-43-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2976-42-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2976-33-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

HTTP Request

HTTP Response

HTTP Request

HTTP Response

DNS Request

DNS Response

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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Downloads

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