remcos | b5e0c038f3f6f225b402354a607411cf0e41317c4dda0f85f67a591ecc2d48d7

Analysis

max time kernel
179s
max time network
180s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-10-2024 15:00

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General

Target

f4ec5e3d1c8ba823ffe99a85704db2de.exe
Size

379KB
MD5

f4ec5e3d1c8ba823ffe99a85704db2de
SHA1

beab1d4c708e247acb025da51e8af82bd2c0cebe
SHA256

b5e0c038f3f6f225b402354a607411cf0e41317c4dda0f85f67a591ecc2d48d7
SHA512

b6194b6e9ce21019ddd82431050ef4b9fd91501f6a603e8fb6ea12ae5dfb7e7a70b712c01857ebbbf8704c70babd581c6f9d905382f382608131a5d5a8fe454e
SSDEEP

384:H+b0ZIrceK5eDKe5Teuek41UQFn0FWkorqVsiEsbTGETNkrMX4mT6h8CfskRpwKH:RZRiKFnQoWTxgPC3Yi3iPmbLDC

Score

10^/10

remcos zutupia discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

ZUTUPIA

camino432.con-ip.com:1831

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
xasds
mouse_option
false
mutex
cfrtr-FQ2B41
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

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 4052 created 3488	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	55

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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Bdhtss = "C:\\Users\\Admin\\AppData\\Roaming\\Bdhtss.exe"	f4ec5e3d1c8ba823ffe99a85704db2de.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4052 set thread context of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84

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	f4ec5e3d1c8ba823ffe99a85704db2de.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe
Token: SeDebugPrivilege	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3020	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84
PID 4052 wrote to memory of 3020	4052	f4ec5e3d1c8ba823ffe99a85704db2de.exe	84

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3488
- C:\Users\Admin\AppData\Local\Temp\f4ec5e3d1c8ba823ffe99a85704db2de.exe
  "C:\Users\Admin\AppData\Local\Temp\f4ec5e3d1c8ba823ffe99a85704db2de.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4052
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3020

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

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\xasds\logs.dat

Filesize
144B

MD5
2488dd431078e3f741f76315fbc668dc

SHA1
9bdb912e9577c4a55e0d879753654f414daf63f3

SHA256
3acf727beaed517d250a15565ed800322070e64dee988d90e67634f741ede12c

SHA512
689f1a57ffb56ccd723d2b5f8bdc57dc641c9e4748b2b2eb749be83938d2f074dd5765faa84ea1863223aa085480eb4f3bb8910d09ec5ea6bbfdfbbe2f1b2782

Download Submit
memory/3020-1095-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3020-1109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4052-0-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/4052-1-0x0000000000550000-0x00000000005B2000-memory.dmp

Filesize
392KB

Download
memory/4052-2-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4052-3-0x0000000005910000-0x0000000005A2E000-memory.dmp

Filesize
1.1MB

Download
memory/4052-19-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-23-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-51-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-67-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-65-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-63-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-61-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-59-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-57-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-55-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-53-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-49-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-47-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-43-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-41-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-39-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-35-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-33-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-31-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-29-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-27-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-25-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-21-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-17-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-15-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-13-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-11-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-7-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-5-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-45-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-37-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-9-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-4-0x0000000005910000-0x0000000005A28000-memory.dmp

Filesize
1.1MB

Download
memory/4052-1078-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4052-1079-0x0000000005D80000-0x0000000005E18000-memory.dmp

Filesize
608KB

Download
memory/4052-1080-0x0000000005E20000-0x0000000005E6C000-memory.dmp

Filesize
304KB

Download
memory/4052-1084-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4052-1085-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4052-1086-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4052-1087-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/4052-1088-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4052-1089-0x00000000064C0000-0x0000000006A64000-memory.dmp

Filesize
5.6MB

Download
memory/4052-1090-0x0000000005F10000-0x0000000005F64000-memory.dmp

Filesize
336KB

Download
memory/4052-1100-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download