rms | 34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
26-03-2022 20:14

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General

Target

34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
Size

4.5MB
MD5

aa49af78c5949910f09e3d303f2b7680
SHA1

cf9d1787f45ee932791ab0a797a2fc67ecb5eb17
SHA256

34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222
SHA512

85c0a891667aafb44eca64d978eca2346771095f440880328749fd99ee7000f527a163a8985782a30a845f7dfab43eb66a61619948759508193453ca33ba2205

Score

10^/10

rms aspackv2 evasion rat trojan upx

Malware Config

Signatures

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

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000500000001e7ca-141.dat	acprotect
behavioral2/files/0x000500000001e7c9-140.dat	acprotect

ASPack v2.12-2.42 9 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000400000001e7cc-139.dat	aspack_v212_v242
behavioral2/files/0x000400000001e7cb-138.dat	aspack_v212_v242
behavioral2/files/0x000400000001e7cc-150.dat	aspack_v212_v242
behavioral2/files/0x000400000001e7cc-157.dat	aspack_v212_v242
behavioral2/files/0x000400000001e7cc-165.dat	aspack_v212_v242
behavioral2/files/0x000400000001e7cc-171.dat	aspack_v212_v242
behavioral2/files/0x000400000001e7cb-179.dat	aspack_v212_v242
behavioral2/files/0x000400000001e7cb-180.dat	aspack_v212_v242
behavioral2/files/0x000400000001e7cb-197.dat	aspack_v212_v242

Executes dropped EXE 7 IoCs

pid	Process
4888	rutserv.exe
860	rutserv.exe
4364	rutserv.exe
4756	rutserv.exe
3084	rfusclient.exe
4548	rfusclient.exe
1604	rfusclient.exe

Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000500000001e7ca-141.dat	upx
behavioral2/files/0x000500000001e7c9-140.dat	upx

Checks computer location settings 2 TTPs 2 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-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops file in Program Files directory 28 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\System\vp8encoder.dll	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\rutserv.exe	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File created	C:\Program Files (x86)\System\vp8decoder.dll	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File created	C:\Program Files (x86)\System\rfusclient.exe	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File created	C:\Program Files (x86)\System\install.vbs	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File created	C:\Program Files (x86)\System\install.bat	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\install.bat	attrib.exe
File opened for modification	C:\Program Files (x86)\System\install.vbs	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\Common Files\System	attrib.exe
File opened for modification	C:\Program Files (x86)\System\rutserv.exe	attrib.exe
File opened for modification	C:\Program Files (x86)\System	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\mailsend.exe	attrib.exe
File opened for modification	C:\Program Files (x86)\System\regedit.reg	attrib.exe
File opened for modification	C:\Program Files (x86)\System\rfusclient.exe	attrib.exe
File created	C:\Program Files (x86)\System\__tmp_rar_sfx_access_check_30231859	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\mailsend.exe	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\vp8decoder.dll	attrib.exe
File created	C:\Program Files (x86)\System\regedit.reg	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\install.bat	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\vp8encoder.dll	attrib.exe
File created	C:\Program Files (x86)\System\mailsend.exe	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\vp8decoder.dll	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\vp8encoder.dll	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\rfusclient.exe	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File created	C:\Program Files (x86)\System\rutserv.exe	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System\regedit.reg	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
File opened for modification	C:\Program Files (x86)\System	attrib.exe
File opened for modification	C:\Program Files (x86)\System\install.vbs	attrib.exe

Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
4828	timeout.exe
444	timeout.exe

Kills process with taskkill 4 IoCs

evasion

pid	Process
1472	taskkill.exe
4044	taskkill.exe
1900	taskkill.exe
2672	taskkill.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe

Runs .reg file with regedit 1 IoCs

pid	Process
4300	regedit.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
4888	rutserv.exe
4888	rutserv.exe
4888	rutserv.exe
4888	rutserv.exe
4888	rutserv.exe
4888	rutserv.exe
860	rutserv.exe
860	rutserv.exe
4364	rutserv.exe
4364	rutserv.exe
4756	rutserv.exe
4756	rutserv.exe
4756	rutserv.exe
4756	rutserv.exe
4756	rutserv.exe
4756	rutserv.exe
3084	rfusclient.exe
3084	rfusclient.exe

Suspicious behavior: SetClipboardViewer 1 IoCs

pid	Process
1604	rfusclient.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1472	taskkill.exe
Token: SeDebugPrivilege	4044	taskkill.exe
Token: SeDebugPrivilege	1900	taskkill.exe
Token: SeDebugPrivilege	2672	taskkill.exe
Token: SeDebugPrivilege	4888	rutserv.exe
Token: SeDebugPrivilege	4364	rutserv.exe
Token: SeTakeOwnershipPrivilege	4756	rutserv.exe
Token: SeTcbPrivilege	4756	rutserv.exe
Token: SeTcbPrivilege	4756	rutserv.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4888	rutserv.exe
860	rutserv.exe
4364	rutserv.exe
4756	rutserv.exe

Suspicious use of WriteProcessMemory 63 IoCs

description	pid	Process	procid_target
PID 3372 wrote to memory of 3704	3372	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe	79
PID 3372 wrote to memory of 3704	3372	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe	79
PID 3372 wrote to memory of 3704	3372	34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe	79
PID 3704 wrote to memory of 912	3704	WScript.exe	80
PID 3704 wrote to memory of 912	3704	WScript.exe	80
PID 3704 wrote to memory of 912	3704	WScript.exe	80
PID 912 wrote to memory of 4712	912	cmd.exe	82
PID 912 wrote to memory of 4712	912	cmd.exe	82
PID 912 wrote to memory of 4712	912	cmd.exe	82
PID 912 wrote to memory of 1820	912	cmd.exe	83
PID 912 wrote to memory of 1820	912	cmd.exe	83
PID 912 wrote to memory of 1820	912	cmd.exe	83
PID 912 wrote to memory of 1472	912	cmd.exe	84
PID 912 wrote to memory of 1472	912	cmd.exe	84
PID 912 wrote to memory of 1472	912	cmd.exe	84
PID 912 wrote to memory of 4044	912	cmd.exe	86
PID 912 wrote to memory of 4044	912	cmd.exe	86
PID 912 wrote to memory of 4044	912	cmd.exe	86
PID 912 wrote to memory of 1900	912	cmd.exe	87
PID 912 wrote to memory of 1900	912	cmd.exe	87
PID 912 wrote to memory of 1900	912	cmd.exe	87
PID 912 wrote to memory of 2672	912	cmd.exe	88
PID 912 wrote to memory of 2672	912	cmd.exe	88
PID 912 wrote to memory of 2672	912	cmd.exe	88
PID 912 wrote to memory of 1624	912	cmd.exe	89
PID 912 wrote to memory of 1624	912	cmd.exe	89
PID 912 wrote to memory of 1624	912	cmd.exe	89
PID 912 wrote to memory of 4300	912	cmd.exe	90
PID 912 wrote to memory of 4300	912	cmd.exe	90
PID 912 wrote to memory of 4300	912	cmd.exe	90
PID 912 wrote to memory of 4828	912	cmd.exe	91
PID 912 wrote to memory of 4828	912	cmd.exe	91
PID 912 wrote to memory of 4828	912	cmd.exe	91
PID 912 wrote to memory of 4888	912	cmd.exe	92
PID 912 wrote to memory of 4888	912	cmd.exe	92
PID 912 wrote to memory of 4888	912	cmd.exe	92
PID 912 wrote to memory of 860	912	cmd.exe	93
PID 912 wrote to memory of 860	912	cmd.exe	93
PID 912 wrote to memory of 860	912	cmd.exe	93
PID 912 wrote to memory of 4364	912	cmd.exe	94
PID 912 wrote to memory of 4364	912	cmd.exe	94
PID 912 wrote to memory of 4364	912	cmd.exe	94
PID 4756 wrote to memory of 3084	4756	rutserv.exe	99
PID 4756 wrote to memory of 3084	4756	rutserv.exe	99
PID 4756 wrote to memory of 3084	4756	rutserv.exe	99
PID 4756 wrote to memory of 4548	4756	rutserv.exe	98
PID 4756 wrote to memory of 4548	4756	rutserv.exe	98
PID 4756 wrote to memory of 4548	4756	rutserv.exe	98
PID 912 wrote to memory of 4472	912	cmd.exe	103
PID 912 wrote to memory of 4472	912	cmd.exe	103
PID 912 wrote to memory of 4472	912	cmd.exe	103
PID 912 wrote to memory of 5112	912	cmd.exe	104
PID 912 wrote to memory of 5112	912	cmd.exe	104
PID 912 wrote to memory of 5112	912	cmd.exe	104
PID 912 wrote to memory of 4156	912	cmd.exe	106
PID 912 wrote to memory of 4156	912	cmd.exe	106
PID 912 wrote to memory of 4156	912	cmd.exe	106
PID 912 wrote to memory of 444	912	cmd.exe	107
PID 912 wrote to memory of 444	912	cmd.exe	107
PID 912 wrote to memory of 444	912	cmd.exe	107
PID 3084 wrote to memory of 1604	3084	rfusclient.exe	109
PID 3084 wrote to memory of 1604	3084	rfusclient.exe	109
PID 3084 wrote to memory of 1604	3084	rfusclient.exe	109

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
4712	attrib.exe
1820	attrib.exe

C:\Users\Admin\AppData\Local\Temp\34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe
"C:\Users\Admin\AppData\Local\Temp\34f40cfa2823d88907f8d73c701aba10439b9a8e754cb3b71b026db00833d222.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3372
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Program Files (x86)\System\install.vbs"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:3704
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Program Files (x86)\System\install.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:912
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Program Files (x86)\System" +H +S /S /D
      4⤵
      Drops file in Program Files directory
      Views/modifies file attributes
      PID:4712
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Program Files (x86)\System\*.*" +H +S /S /D
      4⤵
      Drops file in Program Files directory
      Views/modifies file attributes
      PID:1820
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im rutserv.exe
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1472
  - - C:\Windows\SysWOW64\taskkill.exe
      Taskkill /f /im rutserv.exe
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:4044
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im rfusclient.exe
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1900
  - - C:\Windows\SysWOW64\taskkill.exe
      Taskkill /f /im rfusclient.exe
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:2672
  - - C:\Windows\SysWOW64\reg.exe
      reg delete "HKLM\SYSTEM\Remote Manipulator System" /f
      4⤵
      PID:1624
  - - C:\Windows\SysWOW64\regedit.exe
      regedit /s "regedit.reg"
      4⤵
      Runs .reg file with regedit
      PID:4300
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 2
      4⤵
      Delays execution with timeout.exe
      PID:4828
  - - C:\Program Files (x86)\System\rutserv.exe
      rutserv.exe /silentinstall
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4888
  - - C:\Program Files (x86)\System\rutserv.exe
      rutserv.exe /firewall
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of SetWindowsHookEx
      PID:860
  - - C:\Program Files (x86)\System\rutserv.exe
      rutserv.exe /start
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4364
  - - C:\Windows\SysWOW64\sc.exe
      sc failure RManService reset= 0 actions= restart/1000/restart/1000/restart/1000
      4⤵
      PID:4472
  - - C:\Windows\SysWOW64\sc.exe
      sc config RManService obj= LocalSystem type= interact type= own
      4⤵
      PID:5112
  - - C:\Windows\SysWOW64\sc.exe
      sc config RManService DisplayName= "Windows_Defender v6.3"
      4⤵
      PID:4156
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 120
      4⤵
      Delays execution with timeout.exe
      PID:444

C:\Program Files (x86)\System\rutserv.exe
"C:\Program Files (x86)\System\rutserv.exe"
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Program Files (x86)\System\rfusclient.exe
  "C:\Program Files (x86)\System\rfusclient.exe" /tray
  2⤵
  - Executes dropped EXE
  PID:4548
- C:\Program Files (x86)\System\rfusclient.exe
  "C:\Program Files (x86)\System\rfusclient.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3084
- - C:\Program Files (x86)\System\rfusclient.exe
    "C:\Program Files (x86)\System\rfusclient.exe" /tray
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: SetClipboardViewer
    PID:1604

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

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

memory/860-163-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/860-162-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/860-160-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/860-161-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/860-159-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/860-158-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/1604-201-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/1604-202-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/1604-203-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/1604-198-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/1604-199-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/1604-200-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/3084-190-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/3084-188-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/3084-186-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/3084-183-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/3084-182-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/4364-185-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4364-169-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4364-166-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4364-167-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4364-168-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4364-170-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4548-191-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/4548-187-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/4548-184-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/4548-189-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/4548-181-0x0000000000400000-0x00000000009B6000-memory.dmp

Filesize
5.7MB

Download
memory/4756-175-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4756-176-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4756-172-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4756-174-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4756-173-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4888-153-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4888-154-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4888-152-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4888-151-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4888-155-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download
memory/4888-204-0x0000000000400000-0x0000000000AB9000-memory.dmp

Filesize
6.7MB

Download