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

Analysis

max time kernel
372s
max time network
391s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
08-11-2022 14:28

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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

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 3892 created 3220	3892	svchost.exe	84

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
3220	rutserv.exe
4560	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-1-5-21-2629973501-4017243118-3254762364-1000\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-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\PhishingFilter	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = e8baa059b9aed801	iexplore.exe

Modifies Internet Explorer settings 1 TTPs 36 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374686381"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\RepId	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\RepId\PublicId = "{053E61C0-645A-426B-8F2C-AE202E4A7478}"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = a00d4d0587f3d801	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4100341184"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{1E223D4B-5F7A-11ED-B696-E64E24383C5C} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e2728ad8693e804caf0ad2c227b14216000000000200000000001066000000010000200000009f9a457e6bee9fd5959cc3befa5b757e4d8ed403d806523fe0c24a1951492573000000000e8000000002000020000000f909be4ae5738d08f6ee1845eaa364dcea84ecff3165fec78000f2e2cd770f68200000006107f1d9ae0d014657847279d58295573dcb98622a386a31e27c007e3dce083d400000003c3ed42d57739338b0d59fd007e6e8c489376d9811a31603623ea643c49f32b8aaa5f3a5bee88e1289214775358c1093770717e7145da4734936d6d66ab10c3b	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30995334"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "4100185169"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 609d1b0587f3d801	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30995334"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e2728ad8693e804caf0ad2c227b1421600000000020000000000106600000001000020000000a3466d936ca2b23bc274512e3343332ef5aeb042433816e04fb6c3bd2fd81bbf000000000e800000000200002000000069ec9985bf49ae16509a011e3aa3cc69e0c38505bb532f7cbca182ae1faabd3020000000705cb8e63368057db760a8668f275b10865e0969d2274ce50d8539359107dd0e40000000d9ce785ef9108429970e9b95cc4756043601abb44346b58934a1ccbb108f8c0ca2a44901287a2ec9207e1f894cbab03a88bbe26d598114ae119c51e87e8b6d6e	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3220	rutserv.exe
3220	rutserv.exe
3220	rutserv.exe
3220	rutserv.exe
3220	rutserv.exe
3220	rutserv.exe
4560	rutserv.exe
4560	rutserv.exe
4560	rutserv.exe
4560	rutserv.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3220	rutserv.exe
Token: SeTcbPrivilege	3892	svchost.exe
Token: SeTcbPrivilege	3892	svchost.exe
Token: SeTakeOwnershipPrivilege	4560	rutserv.exe
Token: SeTcbPrivilege	4560	rutserv.exe
Token: SeTcbPrivilege	4560	rutserv.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4384	iexplore.exe
4384	iexplore.exe

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
4384	iexplore.exe
4384	iexplore.exe
4924	IEXPLORE.EXE
4924	IEXPLORE.EXE
4924	IEXPLORE.EXE
4924	IEXPLORE.EXE
3220	rutserv.exe
3220	rutserv.exe
3220	rutserv.exe
3220	rutserv.exe
4560	rutserv.exe
4560	rutserv.exe
4560	rutserv.exe
4560	rutserv.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 4924	4384	iexplore.exe	80
PID 4384 wrote to memory of 4924	4384	iexplore.exe	80
PID 4384 wrote to memory of 4924	4384	iexplore.exe	80
PID 4384 wrote to memory of 3220	4384	iexplore.exe	84
PID 4384 wrote to memory of 3220	4384	iexplore.exe	84
PID 4384 wrote to memory of 3220	4384	iexplore.exe	84
PID 3892 wrote to memory of 4560	3892	svchost.exe	90
PID 3892 wrote to memory of 4560	3892	svchost.exe	90
PID 3892 wrote to memory of 4560	3892	svchost.exe	90

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:4384
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4384 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:4924
- C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G3YCTSQY\rutserv.exe
  "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G3YCTSQY\rutserv.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3220
- - C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G3YCTSQY\rutserv.exe
    C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G3YCTSQY\rutserv.exe -second
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4560

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon
1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3892

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G3YCTSQY\rutserv.exe

Filesize
8.9MB

MD5
c805f814be968f1405a1144d02e8034d

SHA1
600b70c9565f138232a2f72a247381703ee2ba79

SHA256
b9b5bf758928b1e68a6d3e8001a71572076ddad8b46765dfec25c4947daac87d

SHA512
6916d0d3fb71228c2750a25e6c7d44da68589477d1b1c2f303b3878e8a4a0f599853383c62e1d73124eed14a43c2610a1fa2ec141df4ed77969b5567157a99e5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G3YCTSQY\rutserv.exe

Filesize
8.9MB

MD5
c805f814be968f1405a1144d02e8034d

SHA1
600b70c9565f138232a2f72a247381703ee2ba79

SHA256
b9b5bf758928b1e68a6d3e8001a71572076ddad8b46765dfec25c4947daac87d

SHA512
6916d0d3fb71228c2750a25e6c7d44da68589477d1b1c2f303b3878e8a4a0f599853383c62e1d73124eed14a43c2610a1fa2ec141df4ed77969b5567157a99e5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G3YCTSQY\rutserv.exe.9eegqq0.partial

Filesize
8.9MB

MD5
c805f814be968f1405a1144d02e8034d

SHA1
600b70c9565f138232a2f72a247381703ee2ba79

SHA256
b9b5bf758928b1e68a6d3e8001a71572076ddad8b46765dfec25c4947daac87d

SHA512
6916d0d3fb71228c2750a25e6c7d44da68589477d1b1c2f303b3878e8a4a0f599853383c62e1d73124eed14a43c2610a1fa2ec141df4ed77969b5567157a99e5

Download Submit