remcos | 87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58

Analysis

max time kernel
147s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2024 02:53

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe
Size

988KB
MD5

18df057d5952c7f5366335ff201849b5
SHA1

6c421f13a590822d583689221569ceff31f2dbae
SHA256

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58
SHA512

4533b5078683c46e727dd2462745c5893ad9231fa85165595af4242ff7d849af29b3bf8ec2c7f91f3e03acded594bdc7561545cbaf87edf4fc3ab37e349725de
SSDEEP

24576:UL3gqH9oc5KKhWIpBwxgCeg+5LxcvFEgOX9BMN4h7A0:UL3gK9d5KKMIp9CT+5WagODRBd

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-7P3KE1
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
Remcos family
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

Processes:

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe

Executes dropped EXE 2 IoCs

Processes:

Adobe.exeAdobe.exe

pid	Process
560	Adobe.exe
3660	Adobe.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exeAdobe.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-7P3KE1 = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-7P3KE1 = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-7P3KE1 = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-7P3KE1 = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exeAdobe.exe

description	pid	Process	procid_target
PID 3564 set thread context of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 560 set thread context of 3660	560	Adobe.exe	101

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

Processes:

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exeAdobe.exeAdobe.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.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

Processes:

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exeAdobe.exe

description	pid	Process	procid_target
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 3564 wrote to memory of 4272	3564	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	99
PID 4272 wrote to memory of 560	4272	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	100
PID 4272 wrote to memory of 560	4272	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	100
PID 4272 wrote to memory of 560	4272	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	100
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101
PID 560 wrote to memory of 3660	560	Adobe.exe	101

C:\Users\Admin\AppData\Local\Temp\87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe
"C:\Users\Admin\AppData\Local\Temp\87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3564
- C:\Users\Admin\AppData\Local\Temp\87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe
  "C:\Users\Admin\AppData\Local\Temp\87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4272
- - 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:560
  - - 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:3660

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\Adobe\Adobe.exe

Filesize
988KB

MD5
18df057d5952c7f5366335ff201849b5

SHA1
6c421f13a590822d583689221569ceff31f2dbae

SHA256
87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58

SHA512
4533b5078683c46e727dd2462745c5893ad9231fa85165595af4242ff7d849af29b3bf8ec2c7f91f3e03acded594bdc7561545cbaf87edf4fc3ab37e349725de

Download Submit
memory/560-38-0x0000000073660000-0x0000000073E10000-memory.dmp

Filesize
7.7MB

Download
memory/560-29-0x000000007366E000-0x000000007366F000-memory.dmp

Filesize
4KB

Download
memory/560-31-0x0000000073660000-0x0000000073E10000-memory.dmp

Filesize
7.7MB

Download
memory/560-30-0x0000000073660000-0x0000000073E10000-memory.dmp

Filesize
7.7MB

Download
memory/3564-8-0x00000000058E0000-0x00000000058F2000-memory.dmp

Filesize
72KB

Download
memory/3564-4-0x0000000005680000-0x000000000568A000-memory.dmp

Filesize
40KB

Download
memory/3564-15-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/3564-5-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/3564-3-0x00000000056E0000-0x0000000005772000-memory.dmp

Filesize
584KB

Download
memory/3564-10-0x000000000AE90000-0x000000000AF2C000-memory.dmp

Filesize
624KB

Download
memory/3564-6-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/3564-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/3564-1-0x0000000000CC0000-0x0000000000DBE000-memory.dmp

Filesize
1016KB

Download
memory/3564-9-0x0000000008390000-0x0000000008450000-memory.dmp

Filesize
768KB

Download
memory/3564-7-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/3564-2-0x0000000005BF0000-0x0000000006194000-memory.dmp

Filesize
5.6MB

Download
memory/3660-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3660-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4272-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4272-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4272-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4272-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4272-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download