remcos | 87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 14:53

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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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe

Executes dropped EXE 2 IoCs

Processes:

Adobe.exeAdobe.exe

pid	Process
4488	Adobe.exe
4268	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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-7P3KE1 = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\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
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-7P3KE1 = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exeAdobe.exe

description	pid	Process	procid_target
PID 3684 set thread context of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 4488 set thread context of 4268	4488	Adobe.exe	104

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:

Adobe.exeAdobe.exe87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe

pid	Process
3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe
3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe

description	pid	Process
Token: SeDebugPrivilege	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exeAdobe.exe

description	pid	Process	procid_target
PID 3684 wrote to memory of 4864	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	100
PID 3684 wrote to memory of 4864	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	100
PID 3684 wrote to memory of 4864	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	100
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 3684 wrote to memory of 4592	3684	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	101
PID 4592 wrote to memory of 4488	4592	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	102
PID 4592 wrote to memory of 4488	4592	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	102
PID 4592 wrote to memory of 4488	4592	87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe	102
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104
PID 4488 wrote to memory of 4268	4488	Adobe.exe	104

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3684
- C:\Users\Admin\AppData\Local\Temp\87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe
  "C:\Users\Admin\AppData\Local\Temp\87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58.exe"
  2⤵
  PID:4864
- 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:4592
- - 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:4488
  - - 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:4268

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
988KB

MD5
18df057d5952c7f5366335ff201849b5

SHA1
6c421f13a590822d583689221569ceff31f2dbae

SHA256
87fca3267ca394e5bc414194c7c6dec142ae132921efaa2763c6d15f430d6c58

SHA512
4533b5078683c46e727dd2462745c5893ad9231fa85165595af4242ff7d849af29b3bf8ec2c7f91f3e03acded594bdc7561545cbaf87edf4fc3ab37e349725de

Download Submit
memory/3684-8-0x00000000057D0000-0x00000000057E2000-memory.dmp

Filesize
72KB

Download
memory/3684-2-0x0000000005970000-0x0000000005F14000-memory.dmp

Filesize
5.6MB

Download
memory/3684-3-0x0000000005460000-0x00000000054F2000-memory.dmp

Filesize
584KB

Download
memory/3684-4-0x0000000005420000-0x000000000542A000-memory.dmp

Filesize
40KB

Download
memory/3684-5-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3684-6-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/3684-18-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3684-0-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/3684-9-0x0000000008490000-0x0000000008550000-memory.dmp

Filesize
768KB

Download
memory/3684-10-0x000000000AC80000-0x000000000AD1C000-memory.dmp

Filesize
624KB

Download
memory/3684-1-0x0000000000920000-0x0000000000A1E000-memory.dmp

Filesize
1016KB

Download
memory/3684-7-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/4268-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4268-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4268-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4268-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4268-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4268-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4268-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4268-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4268-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4488-33-0x0000000005690000-0x00000000056A2000-memory.dmp

Filesize
72KB

Download
memory/4488-32-0x0000000074A80000-0x0000000075230000-memory.dmp

Filesize
7.7MB

Download
memory/4488-40-0x0000000074A80000-0x0000000075230000-memory.dmp

Filesize
7.7MB

Download
memory/4488-31-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/4488-30-0x0000000074A80000-0x0000000075230000-memory.dmp

Filesize
7.7MB

Download
memory/4488-29-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/4592-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download