remcos | 16930620b3b9166e0ffbd98f5d5b580c9919fd6ccdcc74fb996f53577f508267

max time kernel
9s
max time network
10s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
03-02-2025 02:20

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General

Target

4363463463464363463463463.exe
Size

10KB
MD5

2a94f3960c58c6e70826495f76d00b85
SHA1

e2a1a5641295f5ebf01a37ac1c170ac0814bb71a
SHA256

2fcad226b17131da4274e1b9f8f31359bdd325c9568665f08fd1f6c5d06a23ce
SHA512

fbf55b55fcfb12eb8c029562956229208b9e8e2591859d6336c28a590c92a4d0f7033a77c46ef6ebe07ddfca353aba1e84b51907cd774beab148ee901c92d62f
SSDEEP

192:xlwayyHOXGc20L7BIW12n/ePSjiTlzkGu8stYcFwVc03KY:xlwwHe/20PKn/cLTlHuptYcFwVc03K

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

185.158.251.159:2404

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-TKL5S3
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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
3	4208	4363463463464363463463463.exe

Executes dropped EXE 1 IoCs

pid	Process
768	rea.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
1	raw.githubusercontent.com
3	raw.githubusercontent.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 768 set thread context of 676	768	rea.exe	79

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 2 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	4363463463464363463463463.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rea.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
768	rea.exe
768	rea.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
768	rea.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4208	4363463463464363463463463.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4208 wrote to memory of 768	4208	4363463463464363463463463.exe	78
PID 4208 wrote to memory of 768	4208	4363463463464363463463463.exe	78
PID 4208 wrote to memory of 768	4208	4363463463464363463463463.exe	78
PID 768 wrote to memory of 676	768	rea.exe	79
PID 768 wrote to memory of 676	768	rea.exe	79
PID 768 wrote to memory of 676	768	rea.exe	79
PID 768 wrote to memory of 676	768	rea.exe	79

C:\Users\Admin\AppData\Local\Temp\4363463463464363463463463.exe
"C:\Users\Admin\AppData\Local\Temp\4363463463464363463463463.exe"
1⤵
- Downloads MZ/PE file
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4208
- C:\Users\Admin\AppData\Local\Temp\Files\rea.exe
  "C:\Users\Admin\AppData\Local\Temp\Files\rea.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:768
- - \??\c:\program files (x86)\internet explorer\iexplore.exe
    "c:\program files (x86)\internet explorer\iexplore.exe"
    3⤵
    PID:676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Files\02.08.2022.exe

Filesize
234KB

MD5
4567528ddb8444c07071178a1684f4da

SHA1
1db093fa344bbd5ef57dde640c53b7362656582e

SHA256
afc3f655dfee4bc9f76c00a0c9ccffe310487a3c3394ea12037235e124139c28

SHA512
269c918a056735701b3b02f6d3864cd6a72c08aeeed4f30b6eb6c4fe83da06210c208e6d53d8808b04c3b708ad125fd5ed9733345198b3619fcb6061756429d1

Download Submit
C:\Users\Admin\AppData\Local\Temp\Files\rea.exe

Filesize
469KB

MD5
29b622980bc32771d8cac127961b0ba5

SHA1
895a13abd7ef4f8e0ea9cc1526350eccf1934b27

SHA256
056cdf4a67164ded09385efec0912ccbb1c365c151d01b0a3633de1c4d410a18

SHA512
7410b6413f4177d44ad3b55652ca57e3d622c806e423286a3ae90dd8026edb3552d304fde3c2b82ee0b8ef3dc4ba0e4a185d0d03be96d9fa5f8be7347592db95

Download Submit
memory/676-12-0x0000000000B10000-0x0000000000B8F000-memory.dmp

Filesize
508KB

Download
memory/676-13-0x0000000000B10000-0x0000000000B8F000-memory.dmp

Filesize
508KB

Download
memory/676-14-0x0000000000B10000-0x0000000000B8F000-memory.dmp

Filesize
508KB

Download
memory/676-15-0x0000000000B10000-0x0000000000B8F000-memory.dmp

Filesize
508KB

Download
memory/4208-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/4208-1-0x0000000000B40000-0x0000000000B48000-memory.dmp

Filesize
32KB

Download
memory/4208-2-0x00000000055B0000-0x000000000564C000-memory.dmp

Filesize
624KB

Download
memory/4208-3-0x0000000074B80000-0x0000000075331000-memory.dmp

Filesize
7.7MB

Download
memory/4208-25-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/4208-26-0x0000000074B80000-0x0000000075331000-memory.dmp

Filesize
7.7MB

Download