remcos | e18f7d1e4381c956556250ca9be9e97377b602ebd0ab96b1c092682596a90fbf

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27-09-2024 15:00

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General

Target

tmpc3f5lv8p.exe
Size

878KB
MD5

80cfda135a7c57063e8eb5a38660ae07
SHA1

212fdff074e62dae3a52a771fc86fdf39d0c0104
SHA256

e18f7d1e4381c956556250ca9be9e97377b602ebd0ab96b1c092682596a90fbf
SHA512

e3132b360e6e56f6e1e87530c88cb5594052d29fc13fc3f7b2777b81bf02c0c22fbb8cf81cbd55aae1551d4a59ffb9c4e69ba31a79499211c1de8703757ab691
SSDEEP

24576:zcB82Da9a3eu75lyvIgVIus7NZ4dUpoC1n1:469aOu736Ig0N/F11

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

www.projectusf.com:2404

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
gfh
mouse_option
false
mutex
Rmc-J91LMC
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4912	powershell.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	tmpc3f5lv8p.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1308 set thread context of 3104	1308	tmpc3f5lv8p.exe	93

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmpc3f5lv8p.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmpc3f5lv8p.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3596	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4912	powershell.exe
4912	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4912	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3104	tmpc3f5lv8p.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1308 wrote to memory of 4912	1308	tmpc3f5lv8p.exe	89
PID 1308 wrote to memory of 4912	1308	tmpc3f5lv8p.exe	89
PID 1308 wrote to memory of 4912	1308	tmpc3f5lv8p.exe	89
PID 1308 wrote to memory of 3596	1308	tmpc3f5lv8p.exe	91
PID 1308 wrote to memory of 3596	1308	tmpc3f5lv8p.exe	91
PID 1308 wrote to memory of 3596	1308	tmpc3f5lv8p.exe	91
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93
PID 1308 wrote to memory of 3104	1308	tmpc3f5lv8p.exe	93

C:\Users\Admin\AppData\Local\Temp\tmpc3f5lv8p.exe
"C:\Users\Admin\AppData\Local\Temp\tmpc3f5lv8p.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1308
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\uEOzlLKIrzO.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4912
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uEOzlLKIrzO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBF77.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3596
- C:\Users\Admin\AppData\Local\Temp\tmpc3f5lv8p.exe
  "C:\Users\Admin\AppData\Local\Temp\tmpc3f5lv8p.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\gfh\logs.dat

Filesize
144B

MD5
2ddd1a96323dca7892855a5607fc36d6

SHA1
81cfba13b8c171e50a92f57712b0c636f22d2cec

SHA256
cde7c29d9c36987e2d7f6da2b4caf836bbc4d053bc5df85928b0deb31b4ee98f

SHA512
f728f0c23b350661e86f715fc23090cc514abd225477d1033ac1990b357d5d8e6fdd46f4d33470e8414038b9cca59a91bcbbf26181420aab87dc7382d6b335c9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fu1yvyi0.ayw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBF77.tmp

Filesize
1KB

MD5
37f848015c76fc6980f8a3cf62c3282f

SHA1
20e07dad1a5058f1d4464df13e1b5ed971c909d7

SHA256
b0345faf419c1ae16fbc579358c4e3866c0702ec5162142f8690ab4980e1097a

SHA512
8e62d6b9e0e4d30df45fef43f82ab064be3f3f63a78c846644f070c06fea6a634bc992d53e147d5dc8899e84a3a87426e216ef435c9915bcbbb626017eb7d528

Download Submit
memory/1308-4-0x00000000053C0000-0x00000000053CA000-memory.dmp

Filesize
40KB

Download
memory/1308-32-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/1308-5-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/1308-6-0x0000000006AD0000-0x0000000006BAA000-memory.dmp

Filesize
872KB

Download
memory/1308-7-0x00000000057C0000-0x00000000057D0000-memory.dmp

Filesize
64KB

Download
memory/1308-8-0x000000007524E000-0x000000007524F000-memory.dmp

Filesize
4KB

Download
memory/1308-9-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/1308-10-0x0000000006F90000-0x0000000007050000-memory.dmp

Filesize
768KB

Download
memory/1308-11-0x0000000009660000-0x00000000096FC000-memory.dmp

Filesize
624KB

Download
memory/1308-3-0x0000000005410000-0x00000000054A2000-memory.dmp

Filesize
584KB

Download
memory/1308-2-0x0000000005AB0000-0x0000000006054000-memory.dmp

Filesize
5.6MB

Download
memory/1308-1-0x00000000008F0000-0x00000000009D2000-memory.dmp

Filesize
904KB

Download
memory/1308-0-0x000000007524E000-0x000000007524F000-memory.dmp

Filesize
4KB

Download
memory/3104-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3104-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-18-0x0000000005530000-0x0000000005B58000-memory.dmp

Filesize
6.2MB

Download
memory/4912-54-0x0000000071A30000-0x0000000071A7C000-memory.dmp

Filesize
304KB

Download
memory/4912-53-0x0000000007470000-0x00000000074A2000-memory.dmp

Filesize
200KB

Download
memory/4912-65-0x00000000074B0000-0x0000000007553000-memory.dmp

Filesize
652KB

Download
memory/4912-64-0x0000000006830000-0x000000000684E000-memory.dmp

Filesize
120KB

Download
memory/4912-67-0x00000000075C0000-0x00000000075DA000-memory.dmp

Filesize
104KB

Download
memory/4912-66-0x0000000007C10000-0x000000000828A000-memory.dmp

Filesize
6.5MB

Download
memory/4912-68-0x0000000007630000-0x000000000763A000-memory.dmp

Filesize
40KB

Download
memory/4912-69-0x0000000007840000-0x00000000078D6000-memory.dmp

Filesize
600KB

Download
memory/4912-70-0x00000000077C0000-0x00000000077D1000-memory.dmp

Filesize
68KB

Download
memory/4912-71-0x00000000077F0000-0x00000000077FE000-memory.dmp

Filesize
56KB

Download
memory/4912-72-0x0000000007800000-0x0000000007814000-memory.dmp

Filesize
80KB

Download
memory/4912-73-0x0000000007900000-0x000000000791A000-memory.dmp

Filesize
104KB

Download
memory/4912-74-0x00000000078E0000-0x00000000078E8000-memory.dmp

Filesize
32KB

Download
memory/4912-77-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/4912-47-0x0000000006330000-0x000000000637C000-memory.dmp

Filesize
304KB

Download
memory/4912-46-0x00000000062A0000-0x00000000062BE000-memory.dmp

Filesize
120KB

Download
memory/4912-40-0x0000000005CB0000-0x0000000006004000-memory.dmp

Filesize
3.3MB

Download
memory/4912-34-0x0000000005C40000-0x0000000005CA6000-memory.dmp

Filesize
408KB

Download
memory/4912-33-0x0000000005BD0000-0x0000000005C36000-memory.dmp

Filesize
408KB

Download
memory/4912-31-0x00000000053E0000-0x0000000005402000-memory.dmp

Filesize
136KB

Download
memory/4912-25-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/4912-20-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/4912-19-0x0000000075240000-0x00000000759F0000-memory.dmp

Filesize
7.7MB

Download
memory/4912-16-0x00000000029B0000-0x00000000029E6000-memory.dmp

Filesize
216KB

Download