remcos | 6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/08/2024, 17:57

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General

Target
6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe
Size 1.1MB
Sample240809-wjj2qsxdjc
SHA256 6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c
MD5 27bff21251401bdc53507869909489ac
SHA1 9799ac564ccff08975c682be7f9f300bafb452c7
SHA512 eb6269a0355fa5fef9f34cc13d81ad44c5a44b9a81dfdbe0f88ccc2474988239d1384adb6745abe8e572f1a9a5478dea99d220864e4182b906448dfe4086e5ba
SSDEEP 24576:w5drKL26BWweIJ37Lb2Sr7vTYEg2ELQtQJFBXhNw2aJm:wqS6BESySr/Yr2BQV
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

104.250.180.178:7902

Attributes

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

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe

Executes dropped EXE 4 IoCs

pid	Process
3404	Adobe.exe
3752	Adobe.exe
5104	Adobe.exe
3576	Adobe.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3952 set thread context of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3404 set thread context of 3576	3404	Adobe.exe	89

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 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	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe
3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe
3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe
3404	Adobe.exe
3404	Adobe.exe
3404	Adobe.exe
3404	Adobe.exe
3404	Adobe.exe
3404	Adobe.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe
Token: SeDebugPrivilege	3404	Adobe.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 3952 wrote to memory of 2724	3952	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	85
PID 2724 wrote to memory of 3404	2724	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	86
PID 2724 wrote to memory of 3404	2724	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	86
PID 2724 wrote to memory of 3404	2724	6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe	86
PID 3404 wrote to memory of 3752	3404	Adobe.exe	87
PID 3404 wrote to memory of 3752	3404	Adobe.exe	87
PID 3404 wrote to memory of 3752	3404	Adobe.exe	87
PID 3404 wrote to memory of 5104	3404	Adobe.exe	88
PID 3404 wrote to memory of 5104	3404	Adobe.exe	88
PID 3404 wrote to memory of 5104	3404	Adobe.exe	88
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89
PID 3404 wrote to memory of 3576	3404	Adobe.exe	89

C:\Users\Admin\AppData\Local\Temp\6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe
"C:\Users\Admin\AppData\Local\Temp\6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3952
- C:\Users\Admin\AppData\Local\Temp\6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe
  "C:\Users\Admin\AppData\Local\Temp\6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2724
- - C:\ProgramData\Adobe\Adobe.exe
    "C:\ProgramData\Adobe\Adobe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3404
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      PID:3752
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      PID:5104
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:3576

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

Query Registry

T1012

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

Adobe.exe

Path C:\ProgramData\Adobe\Adobe.exe
Size 1.1MB
SHA256 6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c
MD5 27bff21251401bdc53507869909489ac
SHA1 9799ac564ccff08975c682be7f9f300bafb452c7
SHA512 eb6269a0355fa5fef9f34cc13d81ad44c5a44b9a81dfdbe0f88ccc2474988239d1384adb6745abe8e572f1a9a5478dea99d220864e4182b906448dfe4086e5ba
SSDEEP 24576:w5drKL26BWweIJ37Lb2Sr7vTYEg2ELQtQJFBXhNw2aJm:wqS6BESySr/Yr2BQV
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2724-29-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2724-17-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2724-15-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2724-13-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2724-12-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3404-40-0x0000000074B30000-0x00000000752E0000-memory.dmp

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memory/3404-31-0x0000000074B30000-0x00000000752E0000-memory.dmp

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memory/3404-30-0x0000000074B3E000-0x0000000074B3F000-memory.dmp

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memory/3576-46-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-41-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-42-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-43-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-44-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-45-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-38-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-39-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-47-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-48-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-49-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-50-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3576-37-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3952-8-0x0000000005300000-0x000000000531A000-memory.dmp

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memory/3952-18-0x0000000075250000-0x0000000075A00000-memory.dmp

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memory/3952-11-0x0000000005FB0000-0x0000000006070000-memory.dmp

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memory/3952-9-0x0000000005F40000-0x0000000005F4E000-memory.dmp

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memory/3952-10-0x0000000005F50000-0x0000000005F66000-memory.dmp

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memory/3952-0-0x000000007525E000-0x000000007525F000-memory.dmp

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memory/3952-7-0x0000000005330000-0x00000000053CC000-memory.dmp

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memory/3952-6-0x00000000051F0000-0x00000000051FA000-memory.dmp

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memory/3952-5-0x000000000A8A0000-0x000000000A932000-memory.dmp

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memory/3952-4-0x0000000075250000-0x0000000075A00000-memory.dmp

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memory/3952-3-0x000000000ACB0000-0x000000000B254000-memory.dmp

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memory/3952-2-0x0000000007410000-0x00000000074F6000-memory.dmp

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memory/3952-1-0x00000000004C0000-0x00000000005D4000-memory.dmp

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