rms | b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591

Analysis

max time kernel
148s
max time network
124s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
25-05-2024 01:58

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General

Target

b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591.exe
Size

16.4MB
MD5

2d49a6ce2ee81dc16d23b3a820ee87e0
SHA1

d0b2dab654a86a302c1a051c950b76c15ece69b1
SHA256

b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591
SHA512

c4e2d5459315035df1f60117b03c8289c63b5d8c34bb4c23566b77a38fcd2c4d0967351c5f425839123f2bb4d030a4b6d14236610b066306028c2dda31e5359a
SSDEEP

393216:lfdu0pZ+MHgn6ttNkJI/Jt7RRfONkopbgbGq/jF8I6RLj:lFPpZ+MH5ttxRtVlONLp0yLj

Score

10^/10

rms rat trojan upx

Malware Config

Signatures

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

UPX dump on OEP (original entry point) 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1956-0-0x0000000000400000-0x0000000002826000-memory.dmp	UPX
behavioral1/memory/1956-70-0x0000000000400000-0x0000000002826000-memory.dmp	UPX

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1956-0-0x0000000000400000-0x0000000002826000-memory.dmp	upx
behavioral1/memory/1956-70-0x0000000000400000-0x0000000002826000-memory.dmp	upx

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

rfusclient.exerutserv.exerfusclient.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\International\Geo\Nation	rfusclient.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\International\Geo\Nation	rutserv.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\International\Geo\Nation	rfusclient.exe

Executes dropped EXE 4 IoCs

Processes:

rfusclient.exerutserv.exerutserv.exerfusclient.exe

pid process

2684 rfusclient.exe
2472 rutserv.exe
240 rutserv.exe
1248 rfusclient.exe

Loads dropped DLL 10 IoCs

Processes:

b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591.exerfusclient.exerutserv.exerutserv.exe

pid	process
1956	b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591.exe
2684	rfusclient.exe
2684	rfusclient.exe
2684	rfusclient.exe
2684	rfusclient.exe
2472	rutserv.exe
2472	rutserv.exe
240	rutserv.exe
240	rutserv.exe
240	rutserv.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

rfusclient.exerutserv.exerutserv.exerfusclient.exe

pid	process
2684	rfusclient.exe
2684	rfusclient.exe
2472	rutserv.exe
2472	rutserv.exe
2472	rutserv.exe
2472	rutserv.exe
2472	rutserv.exe
2472	rutserv.exe
240	rutserv.exe
240	rutserv.exe
240	rutserv.exe
240	rutserv.exe
240	rutserv.exe
240	rutserv.exe
1248	rfusclient.exe
1248	rfusclient.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

rutserv.exerutserv.exe

description	pid	process
Token: SeDebugPrivilege	2472	rutserv.exe
Token: SeTakeOwnershipPrivilege	240	rutserv.exe
Token: SeTcbPrivilege	240	rutserv.exe
Token: SeTcbPrivilege	240	rutserv.exe

Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

rfusclient.exe

pid process

1248 rfusclient.exe
1248 rfusclient.exe
1248 rfusclient.exe
Suspicious use of SendNotifyMessage 3 IoCs

Processes:

rfusclient.exe

pid process

1248 rfusclient.exe
1248 rfusclient.exe
1248 rfusclient.exe
Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

rutserv.exerutserv.exe

pid process

2472 rutserv.exe
2472 rutserv.exe
2472 rutserv.exe
2472 rutserv.exe
240 rutserv.exe
240 rutserv.exe
240 rutserv.exe
240 rutserv.exe

pid	process
1248	rfusclient.exe
1248	rfusclient.exe
1248	rfusclient.exe

pid	process
1248	rfusclient.exe
1248	rfusclient.exe
1248	rfusclient.exe

pid	process
2472	rutserv.exe
2472	rutserv.exe
2472	rutserv.exe
2472	rutserv.exe
240	rutserv.exe
240	rutserv.exe
240	rutserv.exe
240	rutserv.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591.exerfusclient.exerutserv.exe

description	pid	process	target process
PID 1956 wrote to memory of 2684	1956	b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591.exe	rfusclient.exe
PID 1956 wrote to memory of 2684	1956	b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591.exe	rfusclient.exe
PID 1956 wrote to memory of 2684	1956	b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591.exe	rfusclient.exe
PID 1956 wrote to memory of 2684	1956	b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591.exe	rfusclient.exe
PID 2684 wrote to memory of 2472	2684	rfusclient.exe	rutserv.exe
PID 2684 wrote to memory of 2472	2684	rfusclient.exe	rutserv.exe
PID 2684 wrote to memory of 2472	2684	rfusclient.exe	rutserv.exe
PID 2684 wrote to memory of 2472	2684	rfusclient.exe	rutserv.exe
PID 240 wrote to memory of 1248	240	rutserv.exe	rfusclient.exe
PID 240 wrote to memory of 1248	240	rutserv.exe	rfusclient.exe
PID 240 wrote to memory of 1248	240	rutserv.exe	rfusclient.exe
PID 240 wrote to memory of 1248	240	rutserv.exe	rfusclient.exe

C:\Users\Admin\AppData\Local\Temp\b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591.exe
"C:\Users\Admin\AppData\Local\Temp\b50cf4ce1fbaa5ba67035c538d49b8a39f1c1f976bfde8ee1f4ee040c6d42591.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1956
- C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\rfusclient.exe
  "C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\rfusclient.exe" -run_agent
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\rutserv.exe
    "C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\rutserv.exe" -run_agent
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2472
  - - C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\rutserv.exe
      "C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\rutserv.exe" -run_agent -second
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:240
    - - C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\rfusclient.exe
        
        "C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\rfusclient.exe" /tray /user
        5⤵
        Checks computer location settings
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of FindShellTrayWindow
        Suspicious use of SendNotifyMessage
        
        PID:1248

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\EULA.rtf

Filesize
69KB

MD5
e6b99144ea133a583f2964fdaa0c514a

SHA1
a9ab6b4ad60bd60c798e9909be801dad725497de

SHA256
b137e38facdd1cdfc9730856675f4b531366d7af54b605209cb2158a58deb1ef

SHA512
a4f6e9663163e7a85251e129983251698b2c98070d2044f6402804d92779d77e477cb63c703b72a6ea20e19fc0d443a2a4f7fcf9d181a1e0ef0c0276297bf072

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\eventmsg.dll

Filesize
51KB

MD5
ca8a4346b37cdd0220792885c5937b30

SHA1
eef05f4b7fb5f8aabfb93d10a6451cc77b489864

SHA256
ccd5b9e5947f956e880bd2285a6091dc9f1ee9b0eb8df627ec4e72b451a1c745

SHA512
c286b0fa9d24a85fe63d3a3d801f135d12409736742c4fc16ba1dc15529df136577dc8975736146437dd56467576fdedb4ac50cf05ab054547504f3dc5ca0c35

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\libeay32.dll

Filesize
1.3MB

MD5
0d51927274281007657c7f3e0df7becb

SHA1
6de3746d9d0980f5715cec6c676a8eb53b5efc49

SHA256
dfc847405be60c29e86e3e3222e7f63c1ff584727d87d3c35c25c4893e19fda0

SHA512
eef74088a94635184192d82bb6dcc0758749cb290c8deeff211881e8a280aec73a53334eff8846df618204b0f318e757eab23e76951a472ba6e086905000d9a5

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\rfusclient.exe

Filesize
11.2MB

MD5
43cc976800c506662c325478eb8bf9ea

SHA1
6d18795469c3a0ac6e4b8bb0024fffba51c45c60

SHA256
41ea3c0b8421ebdea1eb6a508a38e120b1fbb38b9a2e1379deabc5a167a87408

SHA512
396a97698a815316b1bd1b927f089c1d4934ea9fb8b31be72941e46030059978f98866cc19c5daf36722d5a768af007434c875de53b3f3ab9497b6a2bcd9dd54

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\rutserv.exe

Filesize
18.0MB

MD5
6c6ba57be4b7b2fb661a99fea872f6b8

SHA1
aa95f1662a80e2c31fc24e60a9168b6df93c42e7

SHA256
ce5ba1e5d70d95d52b89a1b8278ff8dd4d1e25c38c90ca202b43bdc014795d78

SHA512
15d89d9b89bf585acef483212c3e0cd37ee5c680e03d5e4e9f6ae73e058e5ece0ff6e52df36f695a2aed20c5115e1b1ab6eb6afa580e7349d4871ad4c079c37f

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\settings.dat

Filesize
7KB

MD5
9747762406e1f1708107c6377b2ee6f8

SHA1
c4d2cf11e3d2a2aed7a2e3d08baad370820e81d8

SHA256
a02f875cdee319d72c187f14d9861e6825155097b5396137e7c8964a01bf7989

SHA512
310be62d38d6d035587f7884f97d10a9388105732960cc5f5377ebb155f1403e206554e48ef09b50c275ad334a3723baaa00c56d5e04c09d5885f3debeed12c2

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\ssleay32.dll

Filesize
337KB

MD5
197da919e4c91125656bf905877c9b5a

SHA1
9574ec3e87bb0f7acce72d4d59d176296741aa83

SHA256
303c78aba3b776472c245f17020f9aa5a53f09a6f6c1e4f34b8e18e33906b5ee

SHA512
33c1b853181f83cab2f57f47fb7e093badf83963613e7328ebd23f0d62f59416d7a93063c6237435fbb6833a69bc44ebbc13aa585da010f491c680b2ea335c47

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\vp8decoder.dll

Filesize
380KB

MD5
41acd8b6d9d80a61f2f686850e3d676a

SHA1
38428a08915cf72dd2eca25b3d87613d9aa027dd

SHA256
36993fc3312ce757c8adeca3e5969e1fcc11d5b51b12c458ba8d54d73b64d4e7

SHA512
d174638965ec781cbcb2927ceafb295c3176dc78da8938467faca3e512a42fe71a9dc1070f23e1c95f0b7c157fff3b00a8b572c39e4670713564f1310360ed23

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\vp8encoder.dll

Filesize
1.6MB

MD5
2ac39d6990170ca37a735f2f15f970e8

SHA1
8148a9cdc6b3fe6492281ebad79636433a6064ab

SHA256
0961d83cb25e1a50d5c0ec2f9fb0d17f2504dae0b22a865f6e1ea8e987e1c6fa

SHA512
7e30fde909d5f8efd6c2e40e125525697267273163ac35cf53561a2bd32e5dad8e4fba32905f53e422c9c73b8ad9a0c151f8d36042c5f156b50bf42dc21a9cee

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\webmmux.dll

Filesize
260KB

MD5
8a683f90a78778fba037565588a6f752

SHA1
011939c1fa7b73272db340c32386a13e140adc6a

SHA256
bd520007864b44e0bda7a466384d12c3c3f328326cf3549ba1853a58ccdbc99d

SHA512
9280fbb121f8b94f57560d1be3bcfe5e7c308d54dac278f13ea6c00256444fb9f17f543dd0d32c9844460818c1a50d83b26ce51c79698e9ca7a304652a3f5ea9

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\webmvorbisdecoder.dll

Filesize
365KB

MD5
c9d412c1d30abb9d61151a10371f4140

SHA1
87120faa6b859f5e23f7344f9547b2fc228af15b

SHA256
f3465ce8a23db5e8228eed5a60a6f7a096d1a9adf3012c39bc6d81d4e57e8e9e

SHA512
1c020afa89cdae55f4dcb80a455dc1b352f40455142f3947ed29c3e3d51fbd465b6e0ea16cd103186c252783a3f2a7f7c417e4df5727d9b2db511b650308face

Download Submit
C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\DBEBCA0792\webmvorbisencoder.dll

Filesize
860KB

MD5
a59f69797c42324540e26c7c7998c18c

SHA1
7f7bc5bc62a8744f87a7d2e30cc6dd74c72e19b4

SHA256
83e1c1eb55bfd0f2d85d41c1e4dee65046b064ccb263ec7f412a5f329c75cfd1

SHA512
837f244e6b70658974506ac35bd3ee2d413b89fe4b26e75f4a61cc7bec63e999c9c2cffb690ad567f74962bab13f2f5471300cd0e0cfe61bb1084072cb55c38b

Download Submit
memory/240-106-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-119-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-149-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-146-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-141-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-138-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-100-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-135-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-103-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-130-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-127-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-124-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-111-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/240-114-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/1248-125-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-101-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-120-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-150-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-112-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-128-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-147-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-105-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-131-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-116-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-136-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-139-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1248-142-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download
memory/1956-70-0x0000000000400000-0x0000000002826000-memory.dmp

Filesize
36.1MB

Download
memory/1956-0-0x0000000000400000-0x0000000002826000-memory.dmp

Filesize
36.1MB

Download
memory/1956-1-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1956-63-0x0000000005A50000-0x0000000005A60000-memory.dmp

Filesize
64KB

Download
memory/2472-83-0x0000000000400000-0x00000000016BA000-memory.dmp

Filesize
18.7MB

Download
memory/2684-77-0x0000000000400000-0x0000000000FCE000-memory.dmp

Filesize
11.8MB

Download