remcos | 65db81a51aa3831d6aa297642c1a992784905a194974450d1f4c283026b8ff00

General

Target

msimg32.dll
Size

45.1MB
MD5

58c43477d90dce1e7bac5bbab9c0a5a7
SHA1

d20041b5b1927aeb5887f331b2ed594e14fe8513
SHA256

58c44d41b335c5b8c4f399c05fcef83a2d024211eec09b1ade5335b96b1f64c4
SHA512

c82dcef12e83601bc8f84f5341d8a74c9368ac9093a0f913746ac7a3ce0a856ad6d3faa921b29f3c471cf5a1124339534c21967fa23367119386183d9c044bf4
SSDEEP

786432:bUP7GCGO7t0Srkx/tC0SzIdSwh/WxbpNHQD3trzRpvf9:bUP7GCG6iSrkx1hSzYsHQD3t/Rx1

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

jelelaiyegba.duckdns.org:6060

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-TLKW96
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

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\*ChromeUpdate = "rundll32.exe C:\\Users\\Admin\\Documents\\ChromeData.dll,EntryPoint"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

regsvr32.exe

pid process

1780 regsvr32.exe

pid	process
1780	regsvr32.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

regsvr32.exeregsvr32.execmd.exe

description	pid	process	target process
PID 2072 wrote to memory of 1780	2072	regsvr32.exe	regsvr32.exe
PID 2072 wrote to memory of 1780	2072	regsvr32.exe	regsvr32.exe
PID 2072 wrote to memory of 1780	2072	regsvr32.exe	regsvr32.exe
PID 2072 wrote to memory of 1780	2072	regsvr32.exe	regsvr32.exe
PID 2072 wrote to memory of 1780	2072	regsvr32.exe	regsvr32.exe
PID 2072 wrote to memory of 1780	2072	regsvr32.exe	regsvr32.exe
PID 2072 wrote to memory of 1780	2072	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2476	1780	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2476	1780	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2476	1780	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2476	1780	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2476	1780	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2476	1780	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2476	1780	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2476	1780	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2476	1780	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2476	1780	regsvr32.exe	regsvr32.exe
PID 1780 wrote to memory of 2320	1780	regsvr32.exe	cmd.exe
PID 1780 wrote to memory of 2320	1780	regsvr32.exe	cmd.exe
PID 1780 wrote to memory of 2320	1780	regsvr32.exe	cmd.exe
PID 1780 wrote to memory of 2320	1780	regsvr32.exe	cmd.exe
PID 2320 wrote to memory of 2792	2320	cmd.exe	reg.exe
PID 2320 wrote to memory of 2792	2320	cmd.exe	reg.exe
PID 2320 wrote to memory of 2792	2320	cmd.exe	reg.exe
PID 2320 wrote to memory of 2792	2320	cmd.exe	reg.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\msimg32.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2072

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\msimg32.dll
2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:1780

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\SysWOW64\regsvr32.exe"
3⤵
PID:2476

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\ChromeData.dll",EntryPoint /f & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:2320

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\ChromeData.dll",EntryPoint /f
4⤵
- Adds Run key to start application
PID:2792

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

Replay Monitor

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Downloads

memory/1780-11-0x0000000010000000-0x0000000012DD6000-memory.dmp

Filesize
45.8MB

Download
memory/1780-2-0x0000000010000000-0x0000000012DD6000-memory.dmp

Filesize
45.8MB

Download
memory/1780-0-0x0000000010000000-0x0000000012DD6000-memory.dmp

Filesize
45.8MB

Download
memory/1780-23-0x0000000012D6F000-0x0000000012D76000-memory.dmp

Filesize
28KB

Download
memory/1780-1-0x00000000102E6000-0x0000000010300000-memory.dmp

Filesize
104KB

Download
memory/2476-18-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-19-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-7-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/2476-15-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-5-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2476-13-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-16-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-3-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-17-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-9-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/2476-22-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-12-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-24-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-25-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-26-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-27-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-28-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-29-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-30-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2476-31-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads