remcos | 62e736ac20a8fe8f037bd5d44e3a6081fd67d53c0d5e047b30c39cb6c838833b

General

Target

62e736ac20a8fe8f037bd5d44e3a6081fd67d53c0d5e047b30c39cb6c838833b.dll
Size

3.5MB
MD5

e5d93e71e121c8bcbe965ed765d1ef36
SHA1

78a990827dc002ecb62be89c994110abd8c1e880
SHA256

62e736ac20a8fe8f037bd5d44e3a6081fd67d53c0d5e047b30c39cb6c838833b
SHA512

7589f612684f88918ea0b5721855e20f84093e65e2cb7bb607c26bf355db24c5e344a1c63dc95defbae22f83931e7de5b8b13b5a8e19d596d795ce57d5d631bd
SSDEEP

49152:i5Xob/BJCgLzDdwd9bk/RiF6xQf2V4dNgqjEBaWFnMpuIU2GiD:0A/BSY/RiAxpVgdqaWGpU2GiD

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

pattreon.duckdns.org:7035

Attributes

audio_folder
MicRecords
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-QI1BME
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\*ChromeUpdate = "rundll32.exe C:\\Users\\Admin\\Documents\\FirefoxData.dll,EntryPoint"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1308	regsvr32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 1308	4616	regsvr32.exe	91
PID 4616 wrote to memory of 1308	4616	regsvr32.exe	91
PID 4616 wrote to memory of 1308	4616	regsvr32.exe	91
PID 1308 wrote to memory of 4700	1308	regsvr32.exe	99
PID 1308 wrote to memory of 4700	1308	regsvr32.exe	99
PID 1308 wrote to memory of 4700	1308	regsvr32.exe	99
PID 1308 wrote to memory of 4700	1308	regsvr32.exe	99
PID 1308 wrote to memory of 4700	1308	regsvr32.exe	99
PID 1308 wrote to memory of 4700	1308	regsvr32.exe	99
PID 1308 wrote to memory of 4744	1308	regsvr32.exe	101
PID 1308 wrote to memory of 4744	1308	regsvr32.exe	101
PID 1308 wrote to memory of 4744	1308	regsvr32.exe	101
PID 4744 wrote to memory of 4388	4744	cmd.exe	103
PID 4744 wrote to memory of 4388	4744	cmd.exe	103
PID 4744 wrote to memory of 4388	4744	cmd.exe	103

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\62e736ac20a8fe8f037bd5d44e3a6081fd67d53c0d5e047b30c39cb6c838833b.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\62e736ac20a8fe8f037bd5d44e3a6081fd67d53c0d5e047b30c39cb6c838833b.dll
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of WriteProcessMemory
  PID:1308
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\SysWOW64\regsvr32.exe"
    3⤵
    PID:4700
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4744
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f
      4⤵
      Adds Run key to start application
      PID:4388

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4340 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
1⤵
PID:2992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1308-7-0x0000000010000000-0x0000000010398000-memory.dmp

Filesize
3.6MB

Download
memory/1308-0-0x0000000010000000-0x0000000010398000-memory.dmp

Filesize
3.6MB

Download
memory/1308-2-0x0000000010000000-0x0000000010398000-memory.dmp

Filesize
3.6MB

Download
memory/1308-3-0x0000000010000000-0x0000000010398000-memory.dmp

Filesize
3.6MB

Download
memory/1308-4-0x0000000010000000-0x0000000010398000-memory.dmp

Filesize
3.6MB

Download
memory/1308-1-0x0000000010007000-0x0000000010021000-memory.dmp

Filesize
104KB

Download
memory/4700-13-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-16-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-9-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-11-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-8-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-12-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-5-0x00000000007C0000-0x00000000007C1000-memory.dmp

Filesize
4KB

Download
memory/4700-14-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-15-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-6-0x00000000007C0000-0x00000000007C1000-memory.dmp

Filesize
4KB

Download
memory/4700-18-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-19-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-20-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-22-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-23-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-24-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-25-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download
memory/4700-26-0x0000000000A00000-0x0000000000A82000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads