remcos | 964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617

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
19-11-2024 12:30

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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 3976 created 3436 3976 964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe Explorer.EXE

description	pid	process	target process
PID 3976 created 3436	3976	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-1-5-21-3350944739-639801879-157714471-1000\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 3976 set thread context of 1144	3976	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:

InstallUtil.exe964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

pid process

3976 964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

pid	process
3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

description	pid	process
Token: SeDebugPrivilege	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe
Token: SeDebugPrivilege	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe

description	pid	process	target process
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe
PID 3976 wrote to memory of 1144	3976	964958fa1f6ca768efdbb1faa89afb2a2e88119759af4df9ec6eec6bddb51617.exe	InstallUtil.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3436
- 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:3976
- 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:1144

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/1144-1099-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1144-1101-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3976-0-0x000000007502E000-0x000000007502F000-memory.dmp

Filesize
4KB

Download
memory/3976-1-0x0000000000EE0000-0x0000000000EFE000-memory.dmp

Filesize
120KB

Download
memory/3976-2-0x0000000005E30000-0x00000000063D4000-memory.dmp

Filesize
5.6MB

Download
memory/3976-3-0x0000000005920000-0x00000000059B2000-memory.dmp

Filesize
584KB

Download
memory/3976-4-0x0000000075020000-0x00000000757D0000-memory.dmp

Filesize
7.7MB

Download
memory/3976-5-0x00000000058F0000-0x00000000058FA000-memory.dmp

Filesize
40KB

Download
memory/3976-6-0x0000000006D20000-0x0000000006E3C000-memory.dmp

Filesize
1.1MB

Download
memory/3976-22-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-26-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-70-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-68-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-66-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-64-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-62-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-60-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-58-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-56-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-54-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-52-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-48-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-46-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-44-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-42-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-41-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-38-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-36-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-34-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-32-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-30-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-28-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-24-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-20-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-18-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-17-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-14-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-50-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-12-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-10-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-8-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-7-0x0000000006D20000-0x0000000006E37000-memory.dmp

Filesize
1.1MB

Download
memory/3976-1081-0x0000000075020000-0x00000000757D0000-memory.dmp

Filesize
7.7MB

Download
memory/3976-1082-0x0000000006ED0000-0x0000000006F66000-memory.dmp

Filesize
600KB

Download
memory/3976-1083-0x0000000006F70000-0x0000000006FBC000-memory.dmp

Filesize
304KB

Download
memory/3976-1087-0x0000000075020000-0x00000000757D0000-memory.dmp

Filesize
7.7MB

Download
memory/3976-1089-0x0000000075020000-0x00000000757D0000-memory.dmp

Filesize
7.7MB

Download
memory/3976-1088-0x0000000075020000-0x00000000757D0000-memory.dmp

Filesize
7.7MB

Download
memory/3976-1090-0x000000007502E000-0x000000007502F000-memory.dmp

Filesize
4KB

Download
memory/3976-1091-0x0000000075020000-0x00000000757D0000-memory.dmp

Filesize
7.7MB

Download
memory/3976-1092-0x0000000007070000-0x00000000070C4000-memory.dmp

Filesize
336KB

Download
memory/3976-1100-0x0000000075020000-0x00000000757D0000-memory.dmp

Filesize
7.7MB

Download