remcos | 964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617

Analysis

max time kernel
148s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-11-2024 03:04

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General

Target

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe
Size

96KB
MD5

0c97800219b1c9fd4551200529ac977a
SHA1

b4f7a636ba5391abcfc69649f0be1ce4151a8ae3
SHA256

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617
SHA512

f3f1c6566d0ae8fbfec45fa3957a931b3f7a4e6a8f657fbe194ab95e33ba1a683096d91a95c18486cd1bdcc1d6d20f73de1a06a4e48ab463d5371405ae2f1e92
SSDEEP

1536:C/sBaIs0SF9PhCaeBzfqpVwotboHsTPmQtWgfnre6tgiPZqWSunF:eaaCzf+VBtbJT7t7fnTZqTuF

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

212.162.149.42:7118

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
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-YP127Q
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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
Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

Processes:

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

description pid process target process

PID 2920 created 3416 2920 964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe Explorer.EXE

description	pid	process	target process
PID 2920 created 3416	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	Explorer.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Fsdfrtnzn = "C:\\Users\\Admin\\AppData\\Roaming\\Fsdfrtnzn.exe"	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

description	pid	process	target process
PID 2920 set thread context of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.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

Processes:

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exeInstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

pid process

2920 964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

pid	process
2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

description	pid	process
Token: SeDebugPrivilege	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe
Token: SeDebugPrivilege	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

description	pid	process	target process
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 2920 wrote to memory of 4316	2920	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3416
- C:\Users\Admin\AppData\Local\Temp\964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe
  "C:\Users\Admin\AppData\Local\Temp\964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.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:2920
- 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
  PID:4316

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

memory/2920-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/2920-1-0x0000000000AF0000-0x0000000000B0E000-memory.dmp

Filesize
120KB

Download
memory/2920-2-0x0000000005A20000-0x0000000005FC4000-memory.dmp

Filesize
5.6MB

Download
memory/2920-3-0x0000000005510000-0x00000000055A2000-memory.dmp

Filesize
584KB

Download
memory/2920-4-0x00000000055B0000-0x00000000055BA000-memory.dmp

Filesize
40KB

Download
memory/2920-5-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/2920-6-0x0000000006950000-0x0000000006A6C000-memory.dmp

Filesize
1.1MB

Download
memory/2920-18-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-16-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-42-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-70-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-69-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-66-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-64-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-62-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-60-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-59-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-56-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-54-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-52-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-50-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-48-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-46-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-44-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-40-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-36-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-34-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-32-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-30-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-28-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-26-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-24-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-22-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-20-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-15-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-12-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-10-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-8-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-38-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-7-0x0000000006950000-0x0000000006A67000-memory.dmp

Filesize
1.1MB

Download
memory/2920-1081-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/2920-1082-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/2920-1083-0x0000000006AE0000-0x0000000006B76000-memory.dmp

Filesize
600KB

Download
memory/2920-1084-0x0000000006B80000-0x0000000006BCC000-memory.dmp

Filesize
304KB

Download
memory/2920-1087-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/2920-1089-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/2920-1090-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/2920-1091-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/2920-1092-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/2920-1093-0x0000000006C80000-0x0000000006CD4000-memory.dmp

Filesize
336KB

Download
memory/2920-1101-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/4316-1100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4316-1102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download