remcos | 79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11-09-2024 20:00

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General

Target

rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe
Size

925KB
MD5

0e9e305e1e69c435383eb73f66c63530
SHA1

9d5eb75968bfe5a1e12af2d81f8b20322c77f2ec
SHA256

79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb
SHA512

1bdd88fab52efebbc81ce27b961f7a574ca6e4a9216570bf5193ff09c8f9f8771b93e0a4a312f61a208ecfec2f97b7027fa99dce35b5772d7d99a2a65ad5645e
SSDEEP

24576:Ibo2IFemqKLdQ+tExSVoVKbcqmuDaomTzktr:Ic2tlKLzsAqAhtSgt

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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe

Executes dropped EXE 2 IoCs

pid	Process
864	Adobe.exe
4312	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\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 832 set thread context of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 864 set thread context of 4312	864	Adobe.exe	95

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	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 832 wrote to memory of 3852	832	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	91
PID 3852 wrote to memory of 864	3852	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	92
PID 3852 wrote to memory of 864	3852	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	92
PID 3852 wrote to memory of 864	3852	rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe	92
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95
PID 864 wrote to memory of 4312	864	Adobe.exe	95

C:\Users\Admin\AppData\Local\Temp\rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe
"C:\Users\Admin\AppData\Local\Temp\rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:832
- C:\Users\Admin\AppData\Local\Temp\rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe
  "C:\Users\Admin\AppData\Local\Temp\rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3852
- - 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 use of WriteProcessMemory
    PID:864
  - - 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:4312

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

C:\ProgramData\Adobe\Adobe.exe

Filesize
925KB

MD5
0e9e305e1e69c435383eb73f66c63530

SHA1
9d5eb75968bfe5a1e12af2d81f8b20322c77f2ec

SHA256
79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb

SHA512
1bdd88fab52efebbc81ce27b961f7a574ca6e4a9216570bf5193ff09c8f9f8771b93e0a4a312f61a208ecfec2f97b7027fa99dce35b5772d7d99a2a65ad5645e

Download Submit
memory/832-24-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/832-1-0x00000000008D0000-0x00000000009BC000-memory.dmp

Filesize
944KB

Download
memory/832-3-0x00000000053A0000-0x0000000005432000-memory.dmp

Filesize
584KB

Download
memory/832-4-0x0000000005360000-0x000000000536A000-memory.dmp

Filesize
40KB

Download
memory/832-10-0x0000000009120000-0x00000000091BC000-memory.dmp

Filesize
624KB

Download
memory/832-6-0x00000000055A0000-0x00000000055B0000-memory.dmp

Filesize
64KB

Download
memory/832-7-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/832-8-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/832-9-0x0000000006B20000-0x0000000006BE0000-memory.dmp

Filesize
768KB

Download
memory/832-2-0x0000000005950000-0x0000000005EF4000-memory.dmp

Filesize
5.6MB

Download
memory/832-5-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/832-0-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/864-30-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/864-37-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/864-29-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/864-31-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3852-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3852-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3852-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3852-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3852-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4312-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads