remcos | cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1

Analysis

max time kernel
149s
max time network
142s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/03/2025, 21:09

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General

Target

cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe
Size

1.1MB
MD5

20e60d89e273331ee5c9c55168663c10
SHA1

43f4f20722481704800a8a14eb83c5ee1d7c3d29
SHA256

cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1
SHA512

1fc31a9915419dd6a7c1598eb8e80189fff16448e49835a53fa950e2f62e41f7753b16ff3d2019a1c74fcf5b8d4657c244471918f39c6d82345e07d5dd51d318
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0FS:LTgdZOcuUL3xAx/8b2S7Z0k

Score

10^/10

remcos chinemerem discovery rat

Malware Config

Extracted

Family

remcos

Version

2.2.2 Pro

Botnet

chinemerem

remcoss.onmypc.org:3765

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
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
r-8ET8H0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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 4 IoCs

pid	Process
2888	AboutSettingsHandlers.exe
2648	AboutSettingsHandlers.exe
1972	AboutSettingsHandlers.exe
1748	AboutSettingsHandlers.exe

AutoIT Executable 6 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2400-21-0x00000000009D0000-0x0000000000B59000-memory.dmp	autoit_exe
behavioral1/memory/2400-26-0x00000000009D0000-0x0000000000B59000-memory.dmp	autoit_exe
behavioral1/memory/2888-47-0x0000000000240000-0x00000000003C9000-memory.dmp	autoit_exe
behavioral1/memory/2888-50-0x0000000000240000-0x00000000003C9000-memory.dmp	autoit_exe
behavioral1/memory/1972-69-0x0000000001350000-0x00000000014D9000-memory.dmp	autoit_exe
behavioral1/memory/1972-72-0x0000000001350000-0x00000000014D9000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2400 set thread context of 2988	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	30
PID 2888 set thread context of 2648	2888	AboutSettingsHandlers.exe	36
PID 1972 set thread context of 1748	1972	AboutSettingsHandlers.exe	40

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 7 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	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AboutSettingsHandlers.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AboutSettingsHandlers.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2320	schtasks.exe
2644	schtasks.exe
2036	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2988	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2988	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	30
PID 2400 wrote to memory of 2988	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	30
PID 2400 wrote to memory of 2988	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	30
PID 2400 wrote to memory of 2988	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	30
PID 2400 wrote to memory of 2988	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	30
PID 2400 wrote to memory of 2988	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	30
PID 2400 wrote to memory of 2320	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	32
PID 2400 wrote to memory of 2320	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	32
PID 2400 wrote to memory of 2320	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	32
PID 2400 wrote to memory of 2320	2400	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	32
PID 2744 wrote to memory of 2888	2744	taskeng.exe	35
PID 2744 wrote to memory of 2888	2744	taskeng.exe	35
PID 2744 wrote to memory of 2888	2744	taskeng.exe	35
PID 2744 wrote to memory of 2888	2744	taskeng.exe	35
PID 2888 wrote to memory of 2648	2888	AboutSettingsHandlers.exe	36
PID 2888 wrote to memory of 2648	2888	AboutSettingsHandlers.exe	36
PID 2888 wrote to memory of 2648	2888	AboutSettingsHandlers.exe	36
PID 2888 wrote to memory of 2648	2888	AboutSettingsHandlers.exe	36
PID 2888 wrote to memory of 2648	2888	AboutSettingsHandlers.exe	36
PID 2888 wrote to memory of 2648	2888	AboutSettingsHandlers.exe	36
PID 2888 wrote to memory of 2644	2888	AboutSettingsHandlers.exe	37
PID 2888 wrote to memory of 2644	2888	AboutSettingsHandlers.exe	37
PID 2888 wrote to memory of 2644	2888	AboutSettingsHandlers.exe	37
PID 2888 wrote to memory of 2644	2888	AboutSettingsHandlers.exe	37
PID 2744 wrote to memory of 1972	2744	taskeng.exe	39
PID 2744 wrote to memory of 1972	2744	taskeng.exe	39
PID 2744 wrote to memory of 1972	2744	taskeng.exe	39
PID 2744 wrote to memory of 1972	2744	taskeng.exe	39
PID 1972 wrote to memory of 1748	1972	AboutSettingsHandlers.exe	40
PID 1972 wrote to memory of 1748	1972	AboutSettingsHandlers.exe	40
PID 1972 wrote to memory of 1748	1972	AboutSettingsHandlers.exe	40
PID 1972 wrote to memory of 1748	1972	AboutSettingsHandlers.exe	40
PID 1972 wrote to memory of 1748	1972	AboutSettingsHandlers.exe	40
PID 1972 wrote to memory of 1748	1972	AboutSettingsHandlers.exe	40
PID 1972 wrote to memory of 2036	1972	AboutSettingsHandlers.exe	41
PID 1972 wrote to memory of 2036	1972	AboutSettingsHandlers.exe	41
PID 1972 wrote to memory of 2036	1972	AboutSettingsHandlers.exe	41
PID 1972 wrote to memory of 2036	1972	AboutSettingsHandlers.exe	41

C:\Users\Admin\AppData\Local\Temp\cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe
"C:\Users\Admin\AppData\Local\Temp\cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Users\Admin\AppData\Local\Temp\cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe
  "C:\Users\Admin\AppData\Local\Temp\cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2988
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2320

C:\Windows\system32\taskeng.exe
taskeng.exe {152A2D75-377D-4C15-B997-DFC879B3C2CE} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2888
- - C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
    "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
    3⤵
    - Executes dropped EXE
    PID:2648
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2644
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1972
- - C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
    "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
    3⤵
    - Executes dropped EXE
    PID:1748
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe

Filesize
1.1MB

MD5
51feefadf93eb099a4753505d7e090f9

SHA1
fa7d5af93119e9e74396ac33782007ff27970b15

SHA256
e879253213dc7701cc27995ae1439578b32e2652238bce13162c85f1969c0020

SHA512
e92fcf563bbe9d4b5fd58728bdd38a808a0c3b16bbbdf2cd3dac88f579accd72aafcf246d2a21be8d6925200139b53e007d101464e576f871816db95540be0c6

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
79B

MD5
9f3acb5a0dc08c626dfb39057317a58a

SHA1
0a764836d7e0ede8eb2deb929ecd13d7fe09577d

SHA256
485a447023276939122bdc948b9036ba310caca9c56ecdadb65fb8e661a776ad

SHA512
68298d205e0791ebd016faa6c869354b8e535e8cdb0ce884920331ab1dd964905582eaa2f40fc633a3d12e456f622c435bdd534d01cf9f6383057381cb3662dc

Download Submit
memory/1748-65-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1972-72-0x0000000001350000-0x00000000014D9000-memory.dmp

Filesize
1.5MB

Download
memory/1972-69-0x0000000001350000-0x00000000014D9000-memory.dmp

Filesize
1.5MB

Download
memory/1972-56-0x0000000001350000-0x00000000014D9000-memory.dmp

Filesize
1.5MB

Download
memory/2400-26-0x00000000009D0000-0x0000000000B59000-memory.dmp

Filesize
1.5MB

Download
memory/2400-0-0x00000000009D0000-0x0000000000B59000-memory.dmp

Filesize
1.5MB

Download
memory/2400-2-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/2400-1-0x0000000000070000-0x0000000000073000-memory.dmp

Filesize
12KB

Download
memory/2400-18-0x0000000002710000-0x0000000002899000-memory.dmp

Filesize
1.5MB

Download
memory/2400-21-0x00000000009D0000-0x0000000000B59000-memory.dmp

Filesize
1.5MB

Download
memory/2648-37-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2648-46-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2648-45-0x0000000000240000-0x00000000003C9000-memory.dmp

Filesize
1.5MB

Download
memory/2648-42-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2888-33-0x0000000000240000-0x00000000003C9000-memory.dmp

Filesize
1.5MB

Download
memory/2888-47-0x0000000000240000-0x00000000003C9000-memory.dmp

Filesize
1.5MB

Download
memory/2888-50-0x0000000000240000-0x00000000003C9000-memory.dmp

Filesize
1.5MB

Download
memory/2988-15-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2988-19-0x00000000009D0000-0x0000000000B59000-memory.dmp

Filesize
1.5MB

Download
memory/2988-3-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2988-20-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2988-14-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2988-5-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2988-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads