rms | 99fd9e75e6241eff30e01c5b59df9e901fb24d12bee89c069cc6158f78b3cc98

Analysis

max time kernel
141s
max time network
150s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
26-08-2024 17:39

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General

Target

winserv.exe
Size

10.2MB
MD5

3f4f5a6cb95047fea6102bd7d2226aa9
SHA1

fc09dd898b6e7ff546e4a7517a715928fbafc297
SHA256

99fd9e75e6241eff30e01c5b59df9e901fb24d12bee89c069cc6158f78b3cc98
SHA512

de5c8155f426a4e55953ae85410c7d9ad84f5643c30865fc036d1270310e28754772bd0f3093444a16ef0c1fa3db6c56301746fb5e7f03ce692bfdad0c4fb688
SSDEEP

196608:iz+UZcWP4jBrfWgEgIV8Rzy7Vj4FZvEo:i6UZcWWeVj4FZ

Score

10^/10

rms discovery rat trojan

Malware Config

Signatures

RMS
Remote Manipulator System (RMS) is a remote access tool developed by Russian organization TektonIT.
trojan rat rms
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

Processes:

winserv.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Control Panel\International\Geo\Nation winserv.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Control Panel\International\Geo\Nation	winserv.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:

winserv.exewinserv.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winserv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winserv.exe

Modifies data under HKEY_USERS 2 IoCs

Processes:

winserv.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	winserv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@C:\Windows\SysWOW64\FirewallControlPanel.dll,-12122 = "Windows Firewall"	winserv.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

winserv.exewinserv.exe

pid	process
3152	winserv.exe
3152	winserv.exe
3152	winserv.exe
3152	winserv.exe
3152	winserv.exe
3152	winserv.exe
1544	winserv.exe
1544	winserv.exe
1544	winserv.exe
1544	winserv.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

winserv.exewinserv.exe

description	pid	process
Token: SeDebugPrivilege	3152	winserv.exe
Token: SeTakeOwnershipPrivilege	1544	winserv.exe
Token: SeTcbPrivilege	1544	winserv.exe
Token: SeTcbPrivilege	1544	winserv.exe

Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

winserv.exewinserv.exe

pid process

3152 winserv.exe
3152 winserv.exe
3152 winserv.exe
3152 winserv.exe
1544 winserv.exe
1544 winserv.exe
1544 winserv.exe
1544 winserv.exe

C:\Users\Admin\AppData\Local\Temp\winserv.exe
"C:\Users\Admin\AppData\Local\Temp\winserv.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3152
- C:\Users\Admin\AppData\Local\Temp\winserv.exe
  C:\Users\Admin\AppData\Local\Temp\winserv.exe -second
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

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Downloads

memory/1544-9-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/1544-16-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/1544-14-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/1544-13-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/1544-11-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/1544-10-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/3152-3-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/3152-7-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/3152-6-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/3152-5-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/3152-4-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/3152-0-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/3152-2-0x0000000000400000-0x0000000000E31000-memory.dmp

Filesize
10.2MB

Download
memory/3152-1-0x000000000040A000-0x000000000040B000-memory.dmp

Filesize
4KB

Download