remcos | 03e7cb9e6bdcc56672d4f02c05669f5b8c64d3b90dc8a25bb3fb4e3de38f2aca

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13/11/2024, 02:02

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General

Target

clocktuner-ryzen-2-1/CTR 2.1.exe
Size

3.0MB
MD5

ab76aea8f4d233ea72eddfccd0aa4393
SHA1

7348efc9021e679537573a3acef42b6861074987
SHA256

adaebae945e9ff06350d1be65406f8cc593bbeaab1d71f457183ef25de664aec
SHA512

194b0cf925c7eae1c81c88f5f39a2680a710218f5ca38ed71e150f4f5716493bcfd2da3a4ae056523f9de3aac12be432cbfe62d8b18baacaaac501ad6726fbf0
SSDEEP

49152:ZEA9P+bz2cHPcUb6HSb4SOEMkBeH7nQckO6bAGx7jXTVd3338Z:t92bz2Eb6pd7B6bAGx7n333+

Score

10^/10

remcos new discovery rat

Malware Config

Extracted

Family

remcos

Botnet

New

95.217.148.142:9004

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
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
SSS1ooosSAweewwe-X6B4E4
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	CTR 2.1.exe

Executes dropped EXE 3 IoCs

pid	Process
2156	CTR 2.1.exe
4792	scr_previw.exe
2848	scr_previw.exe

Loads dropped DLL 2 IoCs

pid	Process
4792	scr_previw.exe
2848	scr_previw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2848 set thread context of 2148	2848	scr_previw.exe	93

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 6 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	scr_previw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CTR 2.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CTR 2.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	scr_previw.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2440	CTR 2.1.exe
2440	CTR 2.1.exe
2156	CTR 2.1.exe
2156	CTR 2.1.exe
4792	scr_previw.exe
2848	scr_previw.exe
2848	scr_previw.exe
2148	cmd.exe
2148	cmd.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2848	scr_previw.exe
2148	cmd.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2156	CTR 2.1.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2440	CTR 2.1.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 2440	4648	CTR 2.1.exe	86
PID 4648 wrote to memory of 2440	4648	CTR 2.1.exe	86
PID 4648 wrote to memory of 2440	4648	CTR 2.1.exe	86
PID 2440 wrote to memory of 2156	2440	CTR 2.1.exe	88
PID 2440 wrote to memory of 2156	2440	CTR 2.1.exe	88
PID 2440 wrote to memory of 4792	2440	CTR 2.1.exe	89
PID 2440 wrote to memory of 4792	2440	CTR 2.1.exe	89
PID 2440 wrote to memory of 4792	2440	CTR 2.1.exe	89
PID 4792 wrote to memory of 2848	4792	scr_previw.exe	90
PID 4792 wrote to memory of 2848	4792	scr_previw.exe	90
PID 4792 wrote to memory of 2848	4792	scr_previw.exe	90
PID 2848 wrote to memory of 2148	2848	scr_previw.exe	93
PID 2848 wrote to memory of 2148	2848	scr_previw.exe	93
PID 2848 wrote to memory of 2148	2848	scr_previw.exe	93
PID 2848 wrote to memory of 2148	2848	scr_previw.exe	93
PID 2148 wrote to memory of 3676	2148	cmd.exe	108
PID 2148 wrote to memory of 3676	2148	cmd.exe	108
PID 2148 wrote to memory of 3676	2148	cmd.exe	108
PID 2148 wrote to memory of 3676	2148	cmd.exe	108
PID 2148 wrote to memory of 3676	2148	cmd.exe	108

C:\Users\Admin\AppData\Local\Temp\clocktuner-ryzen-2-1\CTR 2.1.exe
"C:\Users\Admin\AppData\Local\Temp\clocktuner-ryzen-2-1\CTR 2.1.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4648
- C:\Users\Admin\AppData\Local\Temp\clocktuner-ryzen-2-1\CTR 2.1.exe
  "C:\Users\Admin\AppData\Local\Temp\clocktuner-ryzen-2-1\CTR 2.1.exe" /VERYSILENT
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2440
- - C:\Users\Admin\AppData\Roaming\CTR 2.1\CTR 2.1.exe
    "C:\Users\Admin\AppData\Roaming\CTR 2.1\CTR 2.1.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2156
- - C:\Users\Admin\AppData\Roaming\scr_previw.exe
    "C:\Users\Admin\AppData\Roaming\scr_previw.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4792
  - - C:\Users\Admin\AppData\Roaming\Browserload\scr_previw.exe
      C:\Users\Admin\AppData\Roaming\Browserload\scr_previw.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:2848
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\SysWOW64\cmd.exe
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:2148
      - C:\Windows\SysWOW64\explorer.exe
        
        C:\Windows\SysWOW64\explorer.exe
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:3676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\20617039

Filesize
1.2MB

MD5
f3350adc25d3de348393ba5c85a148f5

SHA1
3ebf08845e3a0a4144b2e9d807f7dd52deb312c7

SHA256
487cdc861d6143a5165efb4cf1a4d69d34f5860dd5af29a924fb20894f6e7c37

SHA512
58d7ccff10aefc89e3f72de92e00b77f97167a3175b7fa9c4b81d8bb41507c4258915b6db4503929ff208085f62230b4f17d6de2f34d3543a1eaad551bc3d9b3

Download Submit
C:\Users\Admin\AppData\Roaming\CTR 2.1\CTR 2.1.exe

Filesize
947KB

MD5
8544704f507c57bd2fe9e2551e3abef8

SHA1
36acefb78fc9c67adc9bbc6b6a660f39d8ea2976

SHA256
c144a4451ea558af360534ddab0cd9535c7fd897da8af71e69927936fe9b57fb

SHA512
1ea63e3f45497a4dce690d572f35844e1bd64eb617ae12c4454a1a985af7de139e412e0a65dfe4760dfbe2d2f24d62913b666210fc9e8c7f5e0375d9dc5a0084

Download Submit
C:\Users\Admin\AppData\Roaming\cygrt

Filesize
947KB

MD5
a727c368e3a6c273f28c80607f2df861

SHA1
a31a2b4a4677d58bf9f7126da6dedaf4502eb283

SHA256
bc5e2a7118a6e0a37b968dca2c110dd9db9a4359f6aea13f41ac04c663d066ca

SHA512
b7a47943727fced7da83f89d8eac50a50308a8a7abacf57b7ffcc0b2c05349360a8af60f3ab81755ba456b956b022c99f21692d339d399a42a5b8d9860b9045d

Download Submit
C:\Users\Admin\AppData\Roaming\d3dx9_43.dll

Filesize
1.9MB

MD5
e8ad346c114fda96fca288966eae8e92

SHA1
fdfad7f2030b54f076b2a2e24ef1199abf2588e6

SHA256
7e04681fdc438855e5b27a92c73b74ccb0a13338ee24a5054571b8efd8918ba0

SHA512
d63e542de66eb09d6847ed99e173763b7c24335566f650bdb198d4279b0de6e14cb4a03f29c66b5d7d6c480a6f520f677fccf8cbf51dc5db3f8af6c5412d7549

Download Submit
C:\Users\Admin\AppData\Roaming\gbxchd

Filesize
15KB

MD5
162ba47ec20e7fb580672579a6fef9d2

SHA1
a6b52b8f549ca44ffe821f65e846b869da544c28

SHA256
227baa93552cc95a5d2142c23c27f2006e41093cfe24f89bea1b8fe8abbac159

SHA512
135e057a779e5ed593f455ecc646dbf0f21b0bab909e0d8c3d83c7817e82e52115551cd6710b75dbfb9026393861e6f24f63ec59722d1e73553df97ac0e55cd4

Download Submit
C:\Users\Admin\AppData\Roaming\scr_previw.exe

Filesize
2.2MB

MD5
d9530ecee42acccfd3871672a511bc9e

SHA1
89b4d2406f1294bd699ef231a4def5f495f12778

SHA256
81e04f9a131534acc0e9de08718c062d3d74c80c7f168ec7e699cd4b2bd0f280

SHA512
d5f048ea995affdf9893ec4c5ac5eb188b6714f5b6712e0b5a316702033421b145b8ee6a62d303eb4576bf8f57273ff35c5d675807563a31157136f79d8a9980

Download Submit
memory/2148-53-0x0000000074740000-0x00000000748BB000-memory.dmp

Filesize
1.5MB

Download
memory/2148-51-0x00007FFB5F290000-0x00007FFB5F485000-memory.dmp

Filesize
2.0MB

Download
memory/2156-22-0x00007FFB406C3000-0x00007FFB406C5000-memory.dmp

Filesize
8KB

Download
memory/2156-27-0x000002DBC98D0000-0x000002DBC99C2000-memory.dmp

Filesize
968KB

Download
memory/2156-28-0x000002DBCB5C0000-0x000002DBCB634000-memory.dmp

Filesize
464KB

Download
memory/2440-30-0x0000000000400000-0x000000000070A000-memory.dmp

Filesize
3.0MB

Download
memory/2440-3-0x00000000026C0000-0x00000000026C1000-memory.dmp

Filesize
4KB

Download
memory/2848-48-0x0000000074740000-0x00000000748BB000-memory.dmp

Filesize
1.5MB

Download
memory/2848-46-0x0000000074740000-0x00000000748BB000-memory.dmp

Filesize
1.5MB

Download
memory/2848-47-0x00007FFB5F290000-0x00007FFB5F485000-memory.dmp

Filesize
2.0MB

Download
memory/3676-62-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3676-59-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3676-67-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3676-66-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3676-55-0x00007FFB5F290000-0x00007FFB5F485000-memory.dmp

Filesize
2.0MB

Download
memory/3676-56-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3676-58-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3676-65-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3676-60-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3676-61-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3676-64-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3676-63-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/4648-0-0x0000000000D20000-0x0000000000D21000-memory.dmp

Filesize
4KB

Download
memory/4648-4-0x0000000000400000-0x000000000070A000-memory.dmp

Filesize
3.0MB

Download
memory/4792-34-0x00007FFB5F290000-0x00007FFB5F485000-memory.dmp

Filesize
2.0MB

Download
memory/4792-33-0x0000000074940000-0x0000000074ABB000-memory.dmp

Filesize
1.5MB

Download