remcos | 1135aff0c127721dd6704747c337ce06abd87852f86cc5d19446c0946c644788

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23/10/2024, 08:36

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General

Target

militaryrespondpro/militaryrespondpro.exe
Size

7.5MB
MD5

74538bcd359192ab8a3f3f1bf4e84adb
SHA1

a20254ff13d8c9eda8569c8b9ce94328c4f8b924
SHA256

0bb66047b9a8fc0ad9312c27166c507b82be23e28441be00b0e09b010068bdb6
SHA512

47ef3fd2ddb6f0befdbfe2525b6062c8c4408cb0602cd0e1085b441fd9a94ec6a8884595bba9f2faa63a15e2db232d11f192aab2777ea0a7b72034abc589134d
SSDEEP

196608:lSPQZgEkukO0V2ODNDwcv4RMcpBrcA0M5XgkOClcfWJTl:lSqDo12XMcBrclnkOCln

Score

10^/10

remcos build discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

build

193.29.13.204:5850

Attributes

audio_folder
??????????? ??????
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
true
install_flag
false
keylog_crypt
false
keylog_file
sys.dat
keylog_flag
false
keylog_folder
syslogs
keylog_path
%WinDir%
mouse_option
false
mutex
34534534534ffffsdfd-IPKJ16
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
?????????
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 1848 created 3432	1848	militaryrespond.exe	56

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cvchost.vbs	militaryrespond.exe

Executes dropped EXE 2 IoCs

pid	Process
1848	militaryrespond.exe
3892	militaryrespond.exe

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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	militaryrespondpro.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1848 set thread context of 3892	1848	militaryrespond.exe	98

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\syslogs\sys.dat	militaryrespond.exe

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1848	militaryrespond.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1848	militaryrespond.exe
Token: SeDebugPrivilege	1848	militaryrespond.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3892	militaryrespond.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3664 wrote to memory of 1848	3664	militaryrespondpro.exe	84
PID 3664 wrote to memory of 1848	3664	militaryrespondpro.exe	84
PID 3664 wrote to memory of 1848	3664	militaryrespondpro.exe	84
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98
PID 1848 wrote to memory of 3892	1848	militaryrespond.exe	98

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3432
- C:\Users\Admin\AppData\Local\Temp\militaryrespondpro\militaryrespondpro.exe
  "C:\Users\Admin\AppData\Local\Temp\militaryrespondpro\militaryrespondpro.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3664
- - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\militaryrespond.exe
    C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\militaryrespond.exe
    3⤵
    - Suspicious use of NtCreateUserProcessOtherParentProcess
    - Drops startup file
    - 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:1848
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\militaryrespond.exe
  "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\militaryrespond.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3892

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\militaryrespond.exe

Filesize
7.6MB

MD5
e53cdd984882793c93d3e9a9822b4a10

SHA1
2767df7cea3b973476902cc74ccee829e5a4cbd9

SHA256
37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636

SHA512
84ebc1ac7ebb77c74c0d6d473482f1150128d817541ff771c466e0857894fb6839ed4b94bd7b4cdf11772e11556fa8311080ddbac84b0d588f5ef91b708c679d

Download Submit
C:\Windows\syslogs\sys.dat

Filesize
144B

MD5
1bd319f26e96fe12277c2a529c71c170

SHA1
2254932ac485837a26840c780b88af7a03851be4

SHA256
a720f97c902c2f569530725f529e4772ede8cbabfab6a7630f6f30f82be7796b

SHA512
57cc0a6dd5249d46afc53d494c69ba56f04a4641a70767ef0c853d93fcd645ae6bf36863171833f334988c3d1852e7295bb5c3170f75c3bc88c4ecb386a221bd

Download Submit
memory/1848-5-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download
memory/1848-6-0x0000000000BF0000-0x000000000138A000-memory.dmp

Filesize
7.6MB

Download
memory/1848-7-0x0000000005D40000-0x0000000005DD2000-memory.dmp

Filesize
584KB

Download
memory/1848-8-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/1848-9-0x0000000006320000-0x0000000006446000-memory.dmp

Filesize
1.1MB

Download
memory/1848-10-0x0000000006AF0000-0x0000000007094000-memory.dmp

Filesize
5.6MB

Download
memory/1848-42-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-32-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-74-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-70-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-62-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-48-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-46-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-44-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-40-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-38-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-36-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-34-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-30-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-28-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-27-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-24-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-22-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-20-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-18-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-16-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-14-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-12-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-11-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-72-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-68-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-66-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-64-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-60-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-58-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-57-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-54-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-52-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-50-0x0000000006320000-0x0000000006440000-memory.dmp

Filesize
1.1MB

Download
memory/1848-1085-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/1848-1086-0x0000000006650000-0x00000000066E8000-memory.dmp

Filesize
608KB

Download
memory/1848-1087-0x00000000066F0000-0x000000000673C000-memory.dmp

Filesize
304KB

Download
memory/1848-1091-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/1848-1092-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/1848-1093-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/1848-1094-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download
memory/1848-1095-0x00000000068F0000-0x0000000006944000-memory.dmp

Filesize
336KB

Download
memory/1848-1103-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/3892-1102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3892-1116-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download