remcos | 0fc54d55d3cb27bf5ec3c09325478deeebc49ff858fd7f413a62fb949b7a9666

General

Target
Tax payment invoice - Wednesday December 22, .exe
Size 1.2MB
Sample211222-ghfwcsfgfq
SHA256 0fc54d55d3cb27bf5ec3c09325478deeebc49ff858fd7f413a62fb949b7a9666
MD5 2979c1f6e876b273dc80eafc9e0c4def
SHA1 df8457cd45e4b6a7806b190f0cae86185bdd6f5e
SHA512 5b9282456beb2112894badf1c38808718cb892faa3c9e1b97ef31cee25bf17c44e7ba7d8a67e8bccf64e748e11736dec110e5df65bc38cf073cbd1e4a800d847
MD5 SHA1 SHA512

Score

10^/10

remcos dimension persistence rat suricata

Malware Config

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

DIMENSION

C2

mirroronthewall.hopto.org:6041

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-LHHZG6
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
suricata: ET MALWARE Remocs 3.x Unencrypted Checkin
suricata: ET MALWARE Remocs 3.x Unencrypted Checkin
suricata
suricata: ET MALWARE Remocs 3.x Unencrypted Server Response
suricata: ET MALWARE Remocs 3.x Unencrypted Server Response
suricata

Executes dropped EXE 1 IoCs

pid	Process
2768	PasswordOnWakeSettingFlyout.exe

Loads dropped DLL 1 IoCs

pid	Process
2768	PasswordOnWakeSettingFlyout.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\Oxrsixcl = "C:\\Users\\Admin\\lcxisrxO.url"	Tax payment invoice - Wednesday December 22, .exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1604	PING.EXE

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 928	3036	Tax payment invoice - Wednesday December 22, .exe	69
PID 3036 wrote to memory of 1536	3036	Tax payment invoice - Wednesday December 22, .exe	70
PID 3036 wrote to memory of 1536	3036	Tax payment invoice - Wednesday December 22, .exe	70
PID 3036 wrote to memory of 1536	3036	Tax payment invoice - Wednesday December 22, .exe	70
PID 1536 wrote to memory of 3440	1536	cmd.exe	72
PID 1536 wrote to memory of 3440	1536	cmd.exe	72
PID 1536 wrote to memory of 3440	1536	cmd.exe	72
PID 3440 wrote to memory of 2768	3440	cmd.exe	74
PID 3440 wrote to memory of 2768	3440	cmd.exe	74
PID 3440 wrote to memory of 1604	3440	cmd.exe	75
PID 3440 wrote to memory of 1604	3440	cmd.exe	75
PID 3440 wrote to memory of 1604	3440	cmd.exe	75

C:\Users\Admin\AppData\Local\Temp\Tax payment invoice - Wednesday December 22, .exe
"C:\Users\Admin\AppData\Local\Temp\Tax payment invoice - Wednesday December 22, .exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\SysWOW64\logagent.exe
  C:\Windows\System32\logagent.exe
  2⤵
  PID:928
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\Oxrsixclt.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1536
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /K C:\Users\Admin\OxrsixclO.bat
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3440
  - - C:\Windows \System32\PasswordOnWakeSettingFlyout.exe
      "C:\Windows \System32\PasswordOnWakeSettingFlyout.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:2768
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 6
      4⤵
      Runs ping.exe
      PID:1604

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/928-120-0x0000000002AF0000-0x0000000002AF1000-memory.dmp

Download

memory/928-123-0x0000000000400000-0x0000000000479000-memory.dmp

Download

memory/928-121-0x0000000002AC0000-0x0000000002AC1000-memory.dmp

Download

memory/928-122-0x0000000072600000-0x000000007267C000-memory.dmp

Download

memory/928-119-0x0000000000A10000-0x0000000000A11000-memory.dmp

Download

memory/3036-115-0x0000000002A21000-0x0000000002A35000-memory.dmp

Download

memory/3036-116-0x0000000002340000-0x0000000002341000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads