remcos | 53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2023, 18:49

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General

Target

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Size

7KB
MD5

b359f4af5c88b1e237db9738415b7682
SHA1

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA256

53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA512

6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb
SSDEEP

96:xtEsKVeCVIP7bLp8LAn5c8aY1ej/kKV+J2qzNt:xUVVIP7bLrEOejcKYx

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

194.180.49.17:28282

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
rdfghfgjkgoighjc.exe
copy_folder
Remcos
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
Rmc-PC1DJ2
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

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	rdfghfgjkgoighjc.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe

Executes dropped EXE 3 IoCs

pid	Process
4756	rdfghfgjkgoighjc.exe
4656	rdfghfgjkgoighjc.exe
2340	rdfghfgjkgoighjc.exe

Adds Run key to start application 2 TTPs 10 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\""	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\""	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\""	rdfghfgjkgoighjc.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\	rdfghfgjkgoighjc.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	rdfghfgjkgoighjc.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\""	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\""	rdfghfgjkgoighjc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\""	rdfghfgjkgoighjc.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3228 set thread context of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 4756 set thread context of 2340	4756	rdfghfgjkgoighjc.exe	89

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4968	powershell.exe
4968	powershell.exe
3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
1424	powershell.exe
1424	powershell.exe
4756	rdfghfgjkgoighjc.exe
4756	rdfghfgjkgoighjc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Token: SeDebugPrivilege	4968	powershell.exe
Token: SeDebugPrivilege	4756	rdfghfgjkgoighjc.exe
Token: SeDebugPrivilege	1424	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2340	rdfghfgjkgoighjc.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 3228 wrote to memory of 4968	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	80
PID 3228 wrote to memory of 4968	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	80
PID 3228 wrote to memory of 4968	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	80
PID 3228 wrote to memory of 4212	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	82
PID 3228 wrote to memory of 4212	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	82
PID 3228 wrote to memory of 4212	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	82
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 3228 wrote to memory of 4872	3228	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	83
PID 4872 wrote to memory of 4756	4872	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4872 wrote to memory of 4756	4872	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4872 wrote to memory of 4756	4872	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4756 wrote to memory of 1424	4756	rdfghfgjkgoighjc.exe	86
PID 4756 wrote to memory of 1424	4756	rdfghfgjkgoighjc.exe	86
PID 4756 wrote to memory of 1424	4756	rdfghfgjkgoighjc.exe	86
PID 4756 wrote to memory of 4656	4756	rdfghfgjkgoighjc.exe	88
PID 4756 wrote to memory of 4656	4756	rdfghfgjkgoighjc.exe	88
PID 4756 wrote to memory of 4656	4756	rdfghfgjkgoighjc.exe	88
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89
PID 4756 wrote to memory of 2340	4756	rdfghfgjkgoighjc.exe	89

C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
"C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3228
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4968
- C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
  C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
  2⤵
  PID:4212
- C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
  C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4872
- - C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
    "C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4756
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1424
  - - C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
      C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
      4⤵
      Executes dropped EXE
      PID:4656
  - - C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
      C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetWindowsHookEx
      PID:2340

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe

Filesize
7KB

MD5
b359f4af5c88b1e237db9738415b7682

SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

Download Submit
C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe

Filesize
7KB

MD5
b359f4af5c88b1e237db9738415b7682

SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

Download Submit
C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe

Filesize
7KB

MD5
b359f4af5c88b1e237db9738415b7682

SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

Download Submit
C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe

Filesize
7KB

MD5
b359f4af5c88b1e237db9738415b7682

SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
1KB

MD5
4280e36a29fa31c01e4d8b2ba726a0d8

SHA1
c485c2c9ce0a99747b18d899b71dfa9a64dabe32

SHA256
e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359

SHA512
494fe5f0ade03669e5830bed93c964d69b86629440148d7b0881cf53203fd89443ebff9b4d1ee9d96244f62af6edede622d9eacba37f80f389a0d522e4ad4ea4

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache

Filesize
53KB

MD5
06ad34f9739c5159b4d92d702545bd49

SHA1
9152a0d4f153f3f40f7e606be75f81b582ee0c17

SHA256
474813b625f00710f29fa3b488235a6a22201851efb336bddf60d7d24a66bfba

SHA512
c272cd28ae164d465b779163ba9eca6a28261376414c6bbdfbd9f2128adb7f7ff1420e536b4d6000d0301ded2ec9036bc5c657588458bff41f176bdce8d74f92

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
16KB

MD5
cf5429aa6b3661fe44f81f2f2835c7f5

SHA1
72965da9e8faf115cb09fb5b545bfcd1ca0168f5

SHA256
6564438c9f8ee6b4b8e9e3a979af170fcdec7014ba3802b1d35944b669732dcb

SHA512
9dc7c17e7e7c77b5abd1dbac8081d7424ccfc6e1abf6fc6485ae3e1962f5defa566611fc32217d216b56ae281e70a9bad2730a0c01fc923731cbd56017057b08

Download Submit
C:\Users\Admin\AppData\Roaming\Zwpfblvosjv\Phecxlkxbf.exe

Filesize
7KB

MD5
b359f4af5c88b1e237db9738415b7682

SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

Download Submit
memory/2340-161-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-162-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-163-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-164-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3228-132-0x0000000000CA0000-0x0000000000CA8000-memory.dmp

Filesize
32KB

Download
memory/3228-133-0x0000000007DA0000-0x0000000007DC2000-memory.dmp

Filesize
136KB

Download
memory/4872-150-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4872-146-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4872-145-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4872-144-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4968-141-0x0000000006860000-0x000000000687A000-memory.dmp

Filesize
104KB

Download
memory/4968-140-0x00000000079A0000-0x000000000801A000-memory.dmp

Filesize
6.5MB

Download
memory/4968-139-0x0000000006360000-0x000000000637E000-memory.dmp

Filesize
120KB

Download
memory/4968-138-0x0000000005D30000-0x0000000005D96000-memory.dmp

Filesize
408KB

Download
memory/4968-137-0x0000000005C10000-0x0000000005C76000-memory.dmp

Filesize
408KB

Download
memory/4968-136-0x00000000054F0000-0x0000000005B18000-memory.dmp

Filesize
6.2MB

Download
memory/4968-135-0x0000000004D90000-0x0000000004DC6000-memory.dmp

Filesize
216KB

Download