rms | hxxp://distribs[.]buhphone[.]com/work_4571/rutserv[.]exe

Analysis

max time kernel
271s
max time network
297s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
08-11-2022 14:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

http://distribs.buhphone.com/work_4571/rutserv.exe

Score

10^/10

rms rat trojan

Malware Config

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
1508	rutserv.exe
1148	rutserv.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-1-5-21-999675638-2867687379-27515722-1000\Control Panel\International\Geo\Nation	rutserv.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 2 IoCs

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\PhishingFilter	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = e01a9fe386f3d801	iexplore.exe

Modifies Internet Explorer settings 1 TTPs 36 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000d3b98f5693c0d24b85f349229339c59c00000000020000000000106600000001000020000000b825db3f1291e4718452b4b802a09cd420daeb397bb4def535993febc73ec329000000000e8000000002000020000000190ba359f89553bbb0915ddaabbc20e73e13ae3d3dad38f1d30779f358413d8f2000000042217eb59be0a1a107fc610b9d7f9be240aae7c8c279f096e585cad5da62fe4b400000007771c8a5dab226ec62fc4a0aa50dc87e1685caf77ad702cdff9c57c807b638912b2a134530b14ed5d109c44b86896ab6b76da55b9dd793b34afea780adc6c70f	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374686332"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{194451B1-5F7A-11ED-9738-7E4CDA66D2DC} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 802ab0f586f3d801	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1508	rutserv.exe
1508	rutserv.exe
1508	rutserv.exe
1508	rutserv.exe
1508	rutserv.exe
1148	rutserv.exe
1148	rutserv.exe
1148	rutserv.exe
1148	rutserv.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1508	rutserv.exe
Token: SeTakeOwnershipPrivilege	1148	rutserv.exe
Token: SeTcbPrivilege	1148	rutserv.exe
Token: SeTcbPrivilege	1148	rutserv.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1608	iexplore.exe
1608	iexplore.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1608	iexplore.exe
1608	iexplore.exe
1944	IEXPLORE.EXE
1944	IEXPLORE.EXE
1508	rutserv.exe
1508	rutserv.exe
1508	rutserv.exe
1508	rutserv.exe
1148	rutserv.exe
1148	rutserv.exe
1148	rutserv.exe
1148	rutserv.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 1944	1608	iexplore.exe	27
PID 1608 wrote to memory of 1944	1608	iexplore.exe	27
PID 1608 wrote to memory of 1944	1608	iexplore.exe	27
PID 1608 wrote to memory of 1944	1608	iexplore.exe	27
PID 1608 wrote to memory of 1508	1608	iexplore.exe	29
PID 1608 wrote to memory of 1508	1608	iexplore.exe	29
PID 1608 wrote to memory of 1508	1608	iexplore.exe	29
PID 1608 wrote to memory of 1508	1608	iexplore.exe	29

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" http://distribs.buhphone.com/work_4571/rutserv.exe
1⤵
- Modifies Internet Explorer Phishing Filter
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1608 CREDAT:275457 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1944
- C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\MK8YK3QV\rutserv.exe
  "C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\MK8YK3QV\rutserv.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1508
- - C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\MK8YK3QV\rutserv.exe
    "C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\MK8YK3QV\rutserv.exe" -second
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1148

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\MK8YK3QV\rutserv.exe

Filesize
8.9MB

MD5
c805f814be968f1405a1144d02e8034d

SHA1
600b70c9565f138232a2f72a247381703ee2ba79

SHA256
b9b5bf758928b1e68a6d3e8001a71572076ddad8b46765dfec25c4947daac87d

SHA512
6916d0d3fb71228c2750a25e6c7d44da68589477d1b1c2f303b3878e8a4a0f599853383c62e1d73124eed14a43c2610a1fa2ec141df4ed77969b5567157a99e5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\MK8YK3QV\rutserv.exe

Filesize
8.9MB

MD5
c805f814be968f1405a1144d02e8034d

SHA1
600b70c9565f138232a2f72a247381703ee2ba79

SHA256
b9b5bf758928b1e68a6d3e8001a71572076ddad8b46765dfec25c4947daac87d

SHA512
6916d0d3fb71228c2750a25e6c7d44da68589477d1b1c2f303b3878e8a4a0f599853383c62e1d73124eed14a43c2610a1fa2ec141df4ed77969b5567157a99e5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\MK8YK3QV\rutserv.exe.zfau0s8.partial

Filesize
8.9MB

MD5
c805f814be968f1405a1144d02e8034d

SHA1
600b70c9565f138232a2f72a247381703ee2ba79

SHA256
b9b5bf758928b1e68a6d3e8001a71572076ddad8b46765dfec25c4947daac87d

SHA512
6916d0d3fb71228c2750a25e6c7d44da68589477d1b1c2f303b3878e8a4a0f599853383c62e1d73124eed14a43c2610a1fa2ec141df4ed77969b5567157a99e5

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\K0NQ2SAR.txt

Filesize
595B

MD5
f411628d2097e75c57c3c430d0df4234

SHA1
6063ead4dcc7fe6f1294e04ecb1398f409edd6d4

SHA256
745c9919315dbb9ef9a70aa5870a75a6ee32be1f24a1c2201071814fb5e3d220

SHA512
da30752c5078bc5bbc81843570f23ea169efeeecabdb10fffe84497df9f3cea34c0c2d403647d69855560756124931a29c7e72ad8f0dea79c66faf137e4a9a2e

Download Submit
memory/1508-57-0x0000000075A91000-0x0000000075A93000-memory.dmp

Filesize
8KB

Download