remcos | 286e0821c9dff60f28f608fbc48788495e4fc25616f718991a9b1979fce08cac

Analysis

max time kernel
148s
max time network
155s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:15

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General

Target

b1caa98d799555b069cbab81864da4e3.exe
Size

1.8MB
MD5

b1caa98d799555b069cbab81864da4e3
SHA1

5378ec401b30bee17e591f36ec04d0f6e2c7ea11
SHA256

32f40684e82a342dfdd376030e5f2401abc3d84929b516478ab71750f50f223d
SHA512

af3ccb545117991c133b56fb8c91b5b084d98628b863f1a9072f9140431ffeb8ce3128a7a642de153cdeccc0837e39ec77976f03e992518a286c84d883bc000c
SSDEEP

24576:fD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6W:fF+QrFUBgq25eKu6W

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
1292	sbietrcl.exe
2612	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2824	b1caa98d799555b069cbab81864da4e3.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	b1caa98d799555b069cbab81864da4e3.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1292 set thread context of 2612	1292	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	b1caa98d799555b069cbab81864da4e3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2824	b1caa98d799555b069cbab81864da4e3.exe
2824	b1caa98d799555b069cbab81864da4e3.exe
2824	b1caa98d799555b069cbab81864da4e3.exe
2824	b1caa98d799555b069cbab81864da4e3.exe
2824	b1caa98d799555b069cbab81864da4e3.exe
2824	b1caa98d799555b069cbab81864da4e3.exe
1292	sbietrcl.exe
1292	sbietrcl.exe
1292	sbietrcl.exe
1292	sbietrcl.exe
1292	sbietrcl.exe
1292	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2824	b1caa98d799555b069cbab81864da4e3.exe
Token: SeDebugPrivilege	1292	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2612	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 1292	2824	b1caa98d799555b069cbab81864da4e3.exe	30
PID 2824 wrote to memory of 1292	2824	b1caa98d799555b069cbab81864da4e3.exe	30
PID 2824 wrote to memory of 1292	2824	b1caa98d799555b069cbab81864da4e3.exe	30
PID 2824 wrote to memory of 1292	2824	b1caa98d799555b069cbab81864da4e3.exe	30
PID 1292 wrote to memory of 2612	1292	sbietrcl.exe	31
PID 1292 wrote to memory of 2612	1292	sbietrcl.exe	31
PID 1292 wrote to memory of 2612	1292	sbietrcl.exe	31
PID 1292 wrote to memory of 2612	1292	sbietrcl.exe	31
PID 1292 wrote to memory of 2612	1292	sbietrcl.exe	31
PID 1292 wrote to memory of 2612	1292	sbietrcl.exe	31
PID 1292 wrote to memory of 2612	1292	sbietrcl.exe	31
PID 1292 wrote to memory of 2612	1292	sbietrcl.exe	31
PID 1292 wrote to memory of 2612	1292	sbietrcl.exe	31
PID 1292 wrote to memory of 2612	1292	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\b1caa98d799555b069cbab81864da4e3.exe
"C:\Users\Admin\AppData\Local\Temp\b1caa98d799555b069cbab81864da4e3.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:2824
- 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:1292
- - 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:2612

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
d798a90093b43931ed523920ee08d2c8

SHA1
a13a23dce159777564b2cf32f06c5067f3988953

SHA256
51c4d529b551cdb2a06f9081ffafae66558c9e9defd9b272255b5ff60b28d3b0

SHA512
a448bee46095c27fadc2361681ad01a8f2650b3a3f0202a394f879f36ce49435a1af4a6e3da0cb1b2d6d6330005084bff1f5ff262b6049b0f4ba3717ee1337fc

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

Filesize
344B

MD5
5a33c4354877b33051a268b06ea1f044

SHA1
ac7f829dbe0c2d951ca0d35bbb1b875fbe6aa1fb

SHA256
be28cb8d2e376235e1ab587e44e7cef5b5531bca7c61adbabc3e66e5dc630966

SHA512
fabb12802d841787aa4bf11590398766b60e6d4010dbf11a7d8db14d9ca344402d4d8a8147ec194b70bcbb4df7241ba016c0fcc1f57c66bd05273c45d3989fd8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab6154.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar6176.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar6B21.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

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

Filesize
1.8MB

MD5
2bfbb5da9ce4468389eb45ec191b1dd0

SHA1
b72545c27c92a1f655e3454d0ce4d6cd71cf0cb1

SHA256
b62ea1199b58f73a5f0b1db6bbf812913e83476dab7152a1fdc8f0f3444257aa

SHA512
d9ea8ddc7d18f989ee9ad982e6c06e5b945ecce057bb6e8017aa73295b2dcf0ea36d090a97f1983f0b7862928afc1d707a5aa5233a73522cc12bd0939cb5c222

Download Submit
memory/1292-236-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/1292-206-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2612-226-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2612-231-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2612-222-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2612-233-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2612-235-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2612-237-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2612-218-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2612-229-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2612-228-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2612-220-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2612-224-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2824-2-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-0-0x0000000074C01000-0x0000000074C02000-memory.dmp

Filesize
4KB

Download
memory/2824-198-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-1-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-185-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-205-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-186-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download