remcos | 53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

Analysis

max time kernel
151s
max time network
153s
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 19:25

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

Executes dropped EXE 3 IoCs

pid	Process
100	rdfghfgjkgoighjc.exe
1804	rdfghfgjkgoighjc.exe
4464	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
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\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
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\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\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\""	rdfghfgjkgoighjc.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
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	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 4928 set thread context of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 100 set thread context of 4464	100	rdfghfgjkgoighjc.exe	90

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 6 IoCs

pid	Process
4964	powershell.exe
4964	powershell.exe
4956	powershell.exe
4956	powershell.exe
100	rdfghfgjkgoighjc.exe
100	rdfghfgjkgoighjc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Token: SeDebugPrivilege	4964	powershell.exe
Token: SeDebugPrivilege	100	rdfghfgjkgoighjc.exe
Token: SeDebugPrivilege	4956	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4464	rdfghfgjkgoighjc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 4964	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	81
PID 4928 wrote to memory of 4964	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	81
PID 4928 wrote to memory of 4964	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	81
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 4928 wrote to memory of 2624	4928	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	85
PID 2624 wrote to memory of 100	2624	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	86
PID 2624 wrote to memory of 100	2624	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	86
PID 2624 wrote to memory of 100	2624	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	86
PID 100 wrote to memory of 4956	100	rdfghfgjkgoighjc.exe	87
PID 100 wrote to memory of 4956	100	rdfghfgjkgoighjc.exe	87
PID 100 wrote to memory of 4956	100	rdfghfgjkgoighjc.exe	87
PID 100 wrote to memory of 1804	100	rdfghfgjkgoighjc.exe	89
PID 100 wrote to memory of 1804	100	rdfghfgjkgoighjc.exe	89
PID 100 wrote to memory of 1804	100	rdfghfgjkgoighjc.exe	89
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90
PID 100 wrote to memory of 4464	100	rdfghfgjkgoighjc.exe	90

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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4928
- 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:4964
- 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:2624
- - 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:100
  - - 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:4956
  - - C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
      C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
      4⤵
      Executes dropped EXE
      PID:1804
  - - 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:4464

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
6195a91754effb4df74dbc72cdf4f7a6

SHA1
aba262f5726c6d77659fe0d3195e36a85046b427

SHA256
3254495a5513b37a2686a876d0040275414699e7ce760e7b5ee05e41a54b96f5

SHA512
ed723d15de267390dc93263538428e2c881be3494c996a810616b470d6df7d5acfcc8725687d5c50319ebef45caef44f769bfc32e0dc3abd249dacff4a12cc89

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
5b71423dd871118941d39eb4ec466944

SHA1
071a27911e08119d138734e80587585efd3fdf65

SHA256
47d0642a5bdeb0622eab373f57a5ec1da1e34eed25e17210996d76e74e28464a

SHA512
1ced5e1e67ca721e80e5c04c308583dab1dcd2b1fc0d9da87f645f8f470aa3012de513cf16f64e03f38102072ffe561b9daed98b1fd98469b0f2508149a0f8c4

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

Filesize
7KB

MD5
b359f4af5c88b1e237db9738415b7682

SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

Download Submit
memory/2624-143-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2624-144-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2624-145-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2624-149-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4464-163-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4464-162-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4464-161-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4464-160-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4928-132-0x0000000000820000-0x0000000000828000-memory.dmp

Filesize
32KB

Download
memory/4928-133-0x0000000007970000-0x0000000007992000-memory.dmp

Filesize
136KB

Download
memory/4964-138-0x0000000005A20000-0x0000000005A86000-memory.dmp

Filesize
408KB

Download
memory/4964-135-0x00000000049B0000-0x00000000049E6000-memory.dmp

Filesize
216KB

Download
memory/4964-136-0x0000000005020000-0x0000000005648000-memory.dmp

Filesize
6.2MB

Download
memory/4964-137-0x0000000005940000-0x00000000059A6000-memory.dmp

Filesize
408KB

Download
memory/4964-141-0x0000000006440000-0x000000000645A000-memory.dmp

Filesize
104KB

Download
memory/4964-139-0x0000000005F30000-0x0000000005F4E000-memory.dmp

Filesize
120KB

Download
memory/4964-140-0x0000000007760000-0x0000000007DDA000-memory.dmp

Filesize
6.5MB

Download