remcos | d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700

General

Target

d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe
Size

807KB
MD5

b17e1003bb9bbe58e090c7752447c016
SHA1

a159b486e535469d4c49b227d27608f2ad48288e
SHA256

d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700
SHA512

05077e35558e1bb636596d7a8c6b66f9554ecf8e057f61c3cf7f4af91c19f898943a5dc8b1f13914b231e09671a36631e2490e0b32799250537a375dad83af3a
SSDEEP

24576:4BXu9HGaVHUVeaBzcvMgTvk+39ABn8ApTZl:4w9VHUVebvjT19ABfp

Score

10^/10

remcos remotehost discovery rat upx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.95.169.104:2404

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
true
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-S3AD48
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\name.vbs	name.exe

Executes dropped EXE 2 IoCs

pid	Process
2676	name.exe
2960	name.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/720-0-0x00000000002A0000-0x0000000000461000-memory.dmp	upx
behavioral2/files/0x0002000000022aa8-15.dat	upx
behavioral2/memory/2676-16-0x0000000000620000-0x00000000007E1000-memory.dmp	upx
behavioral2/memory/720-18-0x00000000002A0000-0x0000000000461000-memory.dmp	upx
behavioral2/memory/2676-36-0x0000000000620000-0x00000000007E1000-memory.dmp	upx
behavioral2/memory/2960-54-0x0000000000620000-0x00000000007E1000-memory.dmp	upx

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/720-18-0x00000000002A0000-0x0000000000461000-memory.dmp	autoit_exe
behavioral2/memory/2676-36-0x0000000000620000-0x00000000007E1000-memory.dmp	autoit_exe
behavioral2/memory/2960-54-0x0000000000620000-0x00000000007E1000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2960 set thread context of 3988	2960	name.exe	90

System Location Discovery: System Language Discovery 1 TTPs 4 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	d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	name.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	name.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2676	name.exe
2960	name.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
720	d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe
720	d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe
2676	name.exe
2676	name.exe
2960	name.exe
2960	name.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
720	d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe
720	d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe
2676	name.exe
2676	name.exe
2960	name.exe
2960	name.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3988	svchost.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 720 wrote to memory of 2676	720	d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe	86
PID 720 wrote to memory of 2676	720	d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe	86
PID 720 wrote to memory of 2676	720	d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe	86
PID 2676 wrote to memory of 4392	2676	name.exe	88
PID 2676 wrote to memory of 4392	2676	name.exe	88
PID 2676 wrote to memory of 4392	2676	name.exe	88
PID 2676 wrote to memory of 2960	2676	name.exe	89
PID 2676 wrote to memory of 2960	2676	name.exe	89
PID 2676 wrote to memory of 2960	2676	name.exe	89
PID 2960 wrote to memory of 3988	2960	name.exe	90
PID 2960 wrote to memory of 3988	2960	name.exe	90
PID 2960 wrote to memory of 3988	2960	name.exe	90
PID 2960 wrote to memory of 3988	2960	name.exe	90

C:\Users\Admin\AppData\Local\Temp\d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe
"C:\Users\Admin\AppData\Local\Temp\d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:720
- C:\Users\Admin\AppData\Local\directory\name.exe
  "C:\Users\Admin\AppData\Local\Temp\d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2676
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700.exe"
    3⤵
    PID:4392
- - C:\Users\Admin\AppData\Local\directory\name.exe
    "C:\Users\Admin\AppData\Local\directory\name.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:2960
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\directory\name.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:3988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
184B

MD5
9c1bc578081ecf19619503393d334614

SHA1
0342f1c5fd42cf38dc3dde9aec8115f548bb6577

SHA256
751e8fe0f363147ebc18e8f11c8724920aaad8b7af1d27d4b9b3100d704f349c

SHA512
fa22b4423155843e83e0ff0c11c4f2a9aac61f0ce698e97f7620ac8e1e59d65bffdd27a66444d00be35dff3dc0922ca998e4bee4e96e88fd265137477127ab73

Download Submit
C:\Users\Admin\AppData\Local\Temp\Lymnaeidae

Filesize
483KB

MD5
d27901a98fcf9ba932e53c7450496f09

SHA1
423db92cd7d8ef22a1f486a4547bd3b473ecc4a1

SHA256
986efa4e9a46ab0d0091cd50c8cf22101fe87c21729ce6d90b9441a6448e7071

SHA512
a811201954a1f9998717621fe1f9305e1f2de2fd2d1b96bee1660e2235c4b5a63b9cfd10f52fd39810373ffc365281e3be3316321a1c626064b2b1481936fe8d

Download Submit
C:\Users\Admin\AppData\Local\Temp\autBA09.tmp

Filesize
424KB

MD5
3b359f0e0bb258ec851bdf1d17a9f448

SHA1
9f1d46562f12d11c70dfc7215a4862e5a7d6b876

SHA256
4552d49989780cc2ebbf5cc50454ece310078ece1b67a2d9a496db3f4c00e585

SHA512
dd2153a6961846f237ca2234410d98936728864f1e3508d77e8546b990f97bbe50e0a182ff2e9c7abc5ba9db6bfd08d6a5f574f41bf4c7e95a7ba0d0b2ffd79a

Download Submit
C:\Users\Admin\AppData\Local\Temp\autBA39.tmp

Filesize
16KB

MD5
64c0a461daea97226d05d1a92a219d77

SHA1
42e64f7f89bb396a969f35fe8e8446e184d9e97a

SHA256
a797284c52dc19c38b2a640294f221c0225fef47fd194dace17a966055615054

SHA512
6297133a731f0ad60cdf1f2e74b40fa2a51a8d987096b924023627ad7a6268b34352e827bd99952fbda1932a25e3e882106704f52df7481efbd192abafcc9910

Download Submit
C:\Users\Admin\AppData\Local\Temp\intemeration

Filesize
252KB

MD5
853be9124b51e48f5d850a835321ce11

SHA1
27873a837151fb53b7656c34a565745b84e38342

SHA256
bb2a93bd61d6f95e4c9f0d4129d38633270df2128c57b97f5406655861030d0b

SHA512
192d1b16b630ba3237f19f5bad187304b035c2c5c07af9db05c7f4df763121d8b682a732d8728068dd92bd3d6bef2ed98c8c3efffd0cfc87126894108e1b23fd

Download Submit
C:\Users\Admin\AppData\Local\Temp\intemeration

Filesize
192KB

MD5
3d46711763889e7f65f8dddf8d3068f7

SHA1
f5b4188cf7ab300e8b769f1c56674d54d638d3be

SHA256
c742d41147cfcd52db17f1323ee8dda0f9982e2ab7d6a3e9bc020b3a0ac8f06b

SHA512
fd81e56d5a8ce6f81e4f3cfdf2e2ecd612f444a752d72e0a33a0cabcf65c361ba1f26815b68edcfef2b0d6d093dfb6e7210d39e7846dd4a769bb9c2d62c7155f

Download Submit
C:\Users\Admin\AppData\Local\directory\name.exe

Filesize
807KB

MD5
b17e1003bb9bbe58e090c7752447c016

SHA1
a159b486e535469d4c49b227d27608f2ad48288e

SHA256
d24d76d03365122aa5a4a7828a2d14368066da840ae8945cf595a6b17ceca700

SHA512
05077e35558e1bb636596d7a8c6b66f9554ecf8e057f61c3cf7f4af91c19f898943a5dc8b1f13914b231e09671a36631e2490e0b32799250537a375dad83af3a

Download Submit
memory/720-18-0x00000000002A0000-0x0000000000461000-memory.dmp

Filesize
1.8MB

Download
memory/720-12-0x0000000003360000-0x0000000003364000-memory.dmp

Filesize
16KB

Download
memory/720-0-0x00000000002A0000-0x0000000000461000-memory.dmp

Filesize
1.8MB

Download
memory/2676-36-0x0000000000620000-0x00000000007E1000-memory.dmp

Filesize
1.8MB

Download
memory/2676-16-0x0000000000620000-0x00000000007E1000-memory.dmp

Filesize
1.8MB

Download
memory/2960-54-0x0000000000620000-0x00000000007E1000-memory.dmp

Filesize
1.8MB

Download
memory/3988-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-87-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-92-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3988-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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