remcos | 86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921

Analysis

max time kernel
59s
max time network
61s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/11/2026, 21:42

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General

Target
86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921.exe
Size 644KB
Sample261110-1kmapsbe33
SHA256 86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921
MD5 918fc86d16784f67b8e4b324f0eaa8c3
SHA1 9b57acf054e6d16060f57e678707ee031181a481
SHA512 bf73d8b73a14c3c56b4c2c0473ae9e5c1963f7aa35e7ab16ae24fe19e52999c0bcee2386a247237a55c3d08781533ab88b9a48eee3439cdcfd5f51bc235c5673
SSDEEP 12288:RIfxS5XkH4nOqwitNfuquCwgs69gy3V5v+BNyo3PoL5aDz:25GXkH4nnwitNfuq9wgs3y3V5vgNyo3E
TLSH
T1B1E46D59A39402F8D0B7C135C982953BE7B2BC065571472F03E70E9B2F276A16F3AB16
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

remotehost discovery remcos persistence rat suricata

Malware Config

Extracted

Family

remcos

Version

7.3.1 Pro

Botnet

RemoteHost

88clb.limited:443
www.88clb.limited:443
api.88clb.limited:8080
c2.88clb.limited:8080
backdoor.88clb.limited:8080
app.88clb.limited:8080

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
WinService.exe
copy_folder
Update
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-QKAUPG
screenshot_crypt
false
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
take_screenshot_option
true
take_screenshot_time
5
take_screenshot_title
facebook;discord;telegram

Signatures

Family: Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Suricata alert: REMCOS RAT Malware Outbound C2 Communication 64 IoCs

Network activity triggered a Suricata alert

suricata remcos

flow	pid	Process
34	2424	WinService.exe
34	2424	WinService.exe
22	2424	WinService.exe
22	2424	WinService.exe
30	2424	WinService.exe
30	2424	WinService.exe
48	2424	WinService.exe
48	2424	WinService.exe
64	2424	WinService.exe
64	2424	WinService.exe
91	2424	WinService.exe
91	2424	WinService.exe
85	2424	WinService.exe
85	2424	WinService.exe
76	2424	WinService.exe
76	2424	WinService.exe
60	2424	WinService.exe
60	2424	WinService.exe
54	2424	WinService.exe
54	2424	WinService.exe
66	2424	WinService.exe
66	2424	WinService.exe
69	2424	WinService.exe
69	2424	WinService.exe
81	2424	WinService.exe
81	2424	WinService.exe
97	2424	WinService.exe
97	2424	WinService.exe
98	2424	WinService.exe
98	2424	WinService.exe
19	2424	WinService.exe
19	2424	WinService.exe
42	2424	WinService.exe
42	2424	WinService.exe
44	2424	WinService.exe
44	2424	WinService.exe
45	2424	WinService.exe
45	2424	WinService.exe
87	2424	WinService.exe
87	2424	WinService.exe
102	2424	WinService.exe
102	2424	WinService.exe
11	2424	WinService.exe
11	2424	WinService.exe
27	2424	WinService.exe
27	2424	WinService.exe
41	2424	WinService.exe
41	2424	WinService.exe
43	2424	WinService.exe
43	2424	WinService.exe
53	2424	WinService.exe
53	2424	WinService.exe
57	2424	WinService.exe
57	2424	WinService.exe
77	2424	WinService.exe
77	2424	WinService.exe
93	2424	WinService.exe
93	2424	WinService.exe
13	2424	WinService.exe
13	2424	WinService.exe
18	2424	WinService.exe
18	2424	WinService.exe
62	2424	WinService.exe
62	2424	WinService.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\	86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Rmc-QKAUPG = "\"C:\\ProgramData\\Update\\WinService.exe\""	86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921.exe
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\	WinService.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Rmc-QKAUPG = "\"C:\\ProgramData\\Update\\WinService.exe\""	WinService.exe

Executes dropped EXE 1 IoCs

pid	Process
2424	WinService.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-QKAUPG = "\"C:\\ProgramData\\Update\\WinService.exe\""	86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-QKAUPG = "\"C:\\ProgramData\\Update\\WinService.exe\""	86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-QKAUPG = "\"C:\\ProgramData\\Update\\WinService.exe\""	WinService.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-QKAUPG = "\"C:\\ProgramData\\Update\\WinService.exe\""	WinService.exe

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

System Information Discovery
T1082

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	WinService.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	WinService.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2424	WinService.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	3184	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	3184	AUDIODG.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2424	WinService.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2424	WinService.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 1272 wrote to memory of 2424	1272	86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921.exe	88

C:\Users\Admin\AppData\Local\Temp\86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921.exe
"C:\Users\Admin\AppData\Local\Temp\86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1272
- C:\ProgramData\Update\WinService.exe
  "C:\ProgramData\Update\WinService.exe"
  2⤵
  - Suricata alert: REMCOS RAT Malware Outbound C2 Communication
  - Adds policy Run key to start application
  - Executes dropped EXE
  - Adds Run key to start application
  - Reads the TCP/IP host and domain name from the registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2424

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x00000000000004E8 0x00000000000004EC
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3184

Network

MITRE ATT&CK Enterprise v16

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 Information Discovery

T1082

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

WinService.exe

Path C:\ProgramData\Update\WinService.exe
Size 644KB
SHA256 86af3d9fa80595d572b1dd8687d976167c97a33ea2356f03c0ec684e5072a921
MD5 918fc86d16784f67b8e4b324f0eaa8c3
SHA1 9b57acf054e6d16060f57e678707ee031181a481
SHA512 bf73d8b73a14c3c56b4c2c0473ae9e5c1963f7aa35e7ab16ae24fe19e52999c0bcee2386a247237a55c3d08781533ab88b9a48eee3439cdcfd5f51bc235c5673
SSDEEP 12288:RIfxS5XkH4nOqwitNfuquCwgs69gy3V5v+BNyo3PoL5aDz:25GXkH4nnwitNfuq9wgs3y3V5vgNyo3E
TLSH
T1B1E46D59A39402F8D0B7C135C982953BE7B2BC065571472F03E70E9B2F276A16F3AB16
MD5 SHA1 SHA512 SSDEEP TLSH

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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