remcos | 92adf52b3b33c6520246cb0376c88fc0bc99da5e09a7888df8ca6ef47bee7420

Analysis

max time kernel
300s
max time network
302s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 00:58

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General

Target

Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe
Size

1.3MB
MD5

dabb9c34debeb158b87fc305b5b35500
SHA1

0e1c01d3652652936a13145910273825ac1fdb47
SHA256

9bad1a9d1124eaaa444e2ed57d9cfaac32448b51aab63474a75aa367b970e75c
SHA512

ac7fb3346aea79083dce335fb0b8b2d6c674e6dfd119732dd7ba83db076ca02f506b8c92efdc858e4eb2ad6e1e88485f8d673f4cb843f8e9ffce3ad9ad632936
SSDEEP

24576:CMv/RfK3j6UqPTUHlrzyOxP2rH5QCQgkagp742NA:i7E4HxR2rZ0gkag54n

Score

10^/10

remcos vivero2 discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

VIVERO2

viveroelgirasol.com:2406

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
lgs.dat
keylog_flag
false
keylog_folder
WinLog
mouse_option
false
mutex
qwerty2024-GHME8E
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 4644 created 3376	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.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\Hziexvfyeey = "C:\\Users\\Admin\\AppData\\Roaming\\Hziexvfyeey.exe"	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4644 set thread context of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82

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	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe
Token: SeDebugPrivilege	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4912	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82
PID 4644 wrote to memory of 4912	4644	Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe	82

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3376
- C:\Users\Admin\AppData\Local\Temp\Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Cobro_473152503353937937121882933139460361945218628084381001751848317.pdf.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:4644
- 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:4912

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

Replay Monitor

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Downloads

C:\ProgramData\WinLog\lgs.dat

Filesize
144B

MD5
640476eefd191ad0ba7bcd38842b5969

SHA1
566397246528a5c47dfe25635dae3f3e247167de

SHA256
9c2be80551fd43edbf21ec1b0db8440e0fb7fd0c9389991120a5e3d19a1b74d2

SHA512
ba58235c71f8262cd917fabcc6a53c5ca3bd434397b80dcbb5ffa8f3d5c76b0507866d6e379f9c8d43ee71bf22bf8162d42ed7983fd4c541bc9030edddbe3f92

Download Submit
memory/4644-27-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-1088-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4644-3-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4644-5-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-15-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-61-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-67-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-65-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-63-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-59-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-57-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-55-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-51-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-49-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-29-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-45-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-43-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-39-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-37-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-35-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-33-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-31-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-47-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-2-0x0000000004F10000-0x000000000502E000-memory.dmp

Filesize
1.1MB

Download
memory/4644-7-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-23-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-21-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-19-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-17-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-13-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-11-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-9-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-25-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-53-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-41-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-4-0x0000000004F10000-0x0000000005028000-memory.dmp

Filesize
1.1MB

Download
memory/4644-1078-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4644-1080-0x0000000004EB0000-0x0000000004EFC000-memory.dmp

Filesize
304KB

Download
memory/4644-1079-0x0000000005060000-0x00000000050F8000-memory.dmp

Filesize
608KB

Download
memory/4644-1084-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4644-1085-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4644-1086-0x0000000005A30000-0x0000000005FD4000-memory.dmp

Filesize
5.6MB

Download
memory/4644-0-0x00000000748AE000-0x00000000748AF000-memory.dmp

Filesize
4KB

Download
memory/4644-1087-0x0000000005320000-0x0000000005374000-memory.dmp

Filesize
336KB

Download
memory/4644-1097-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/4644-1-0x0000000000360000-0x00000000004AE000-memory.dmp

Filesize
1.3MB

Download
memory/4912-1106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-1098-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download