remcos | 286e0821c9dff60f28f608fbc48788495e4fc25616f718991a9b1979fce08cac

Analysis

max time kernel
141s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:15

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General

Target

b05f7f78ca8a8285fcaedf481b5ee1df.exe
Size

1.6MB
MD5

b05f7f78ca8a8285fcaedf481b5ee1df
SHA1

468ce88a79124efa42dc6b55842ef8df4592d4b1
SHA256

ed5a2293fc8b4a12153242623be44827fd147f8b4277eb80129960a74c051fb9
SHA512

d31b92af65eb4bf7c3f2550a571a24d19adba0ae33b52cb669a2d9b0304f864a4d7c244033a3db4aae225089162c1401ac4c252b738cd10b0da4dd35a5a56f90
SSDEEP

24576:1D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjoh:1p7E+QrFUBgq20

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
2380	sbietrcl.exe
1064	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2780	b05f7f78ca8a8285fcaedf481b5ee1df.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	b05f7f78ca8a8285fcaedf481b5ee1df.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2380 set thread context of 1064	2380	sbietrcl.exe	31

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	b05f7f78ca8a8285fcaedf481b5ee1df.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe
2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe
2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe
2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe
2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe
2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe
2380	sbietrcl.exe
2380	sbietrcl.exe
2380	sbietrcl.exe
2380	sbietrcl.exe
2380	sbietrcl.exe
2380	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe
Token: SeDebugPrivilege	2380	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1064	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 2380	2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe	30
PID 2780 wrote to memory of 2380	2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe	30
PID 2780 wrote to memory of 2380	2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe	30
PID 2780 wrote to memory of 2380	2780	b05f7f78ca8a8285fcaedf481b5ee1df.exe	30
PID 2380 wrote to memory of 1064	2380	sbietrcl.exe	31
PID 2380 wrote to memory of 1064	2380	sbietrcl.exe	31
PID 2380 wrote to memory of 1064	2380	sbietrcl.exe	31
PID 2380 wrote to memory of 1064	2380	sbietrcl.exe	31
PID 2380 wrote to memory of 1064	2380	sbietrcl.exe	31
PID 2380 wrote to memory of 1064	2380	sbietrcl.exe	31
PID 2380 wrote to memory of 1064	2380	sbietrcl.exe	31
PID 2380 wrote to memory of 1064	2380	sbietrcl.exe	31
PID 2380 wrote to memory of 1064	2380	sbietrcl.exe	31
PID 2380 wrote to memory of 1064	2380	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\b05f7f78ca8a8285fcaedf481b5ee1df.exe
"C:\Users\Admin\AppData\Local\Temp\b05f7f78ca8a8285fcaedf481b5ee1df.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:2780
- 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:2380
- - 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:1064

Network

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

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Downloads

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

Filesize
71KB

MD5
83142242e97b8953c386f988aa694e4a

SHA1
833ed12fc15b356136dcdd27c61a50f59c5c7d50

SHA256
d72761e1a334a754ce8250e3af7ea4bf25301040929fd88cf9e50b4a9197d755

SHA512
bb6da177bd16d163f377d9b4c63f6d535804137887684c113cc2f643ceab4f34338c06b5a29213c23d375e95d22ef417eac928822dfb3688ce9e2de9d5242d10

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

Filesize
344B

MD5
5950f53d05fbd271aaea3274abe21d9e

SHA1
398079d269bc9477ec6b74b4e0a19c900489411f

SHA256
91a0c60aad7531b8ad5ce16669e93d0d2178aab6e6638c8fe047144dbabd0784

SHA512
b1fa029b7fe38c5fad4e4609e1005c76cc44ed6e09cfd176aef94d2934c634d379d3da4fa3a6c0abd9d9b05f78c6d7a27b500e6f9a939019db0c178bb0fcc70b

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

Filesize
344B

MD5
91ab27604df30bc17ea4232367182036

SHA1
90b087be59fa422ee0642b16106818c5a8846784

SHA256
090ea47d307c6bbef33bb93d10e71008d98040cbfb4d67b9b6330d3b91ff4785

SHA512
567abbdf531db1d18bb84778a63b6d297ded3271ab95a0ce5a7f854968a9ca7eb34d6d3849c320a774fbedb77b95093a7082f96f2b9aba205e90424ffa86af6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab5C17.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar5C29.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar5EB3.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

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

Filesize
1.6MB

MD5
9ad44b2792ba95e7b815751948292775

SHA1
b03704596032d56d3812ae8311e61a633e372739

SHA256
5744b68ed3ab54335057abd10788984c1ff8145bfcba0768e5b3817dd1edc94b

SHA512
35d2fdde34ab114a7ce4bdfc94d3e1be41971ffb816e6748d4c539084824bb96495fe55ab0c6951014d763207790999db65b406a132a5cea36ab5d8a9e08cba2

Download Submit
memory/1064-229-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1064-220-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1064-231-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1064-232-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1064-235-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1064-236-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1064-218-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1064-224-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1064-226-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1064-228-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1064-222-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2380-206-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2380-237-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2780-0-0x0000000074821000-0x0000000074822000-memory.dmp

Filesize
4KB

Download
memory/2780-1-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2780-185-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2780-204-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2780-2-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2780-198-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2780-186-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download