remcos | 37c7e817c4e65f4737e54b6f0801be11682cbcccab5e7bdd7d75deee904866cd

Analysis

max time kernel
153s
max time network
153s
platform
windows7_x64
resource
win7-en-20211208
submitted
08/02/2022, 09:19

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General

Target
RECEIPT-IMG303948485.exe
Size 794KB
Sample220208-labnwsfcc2
SHA256 37c7e817c4e65f4737e54b6f0801be11682cbcccab5e7bdd7d75deee904866cd
MD5 053aea1ba61d5e6f5bc55c63761086e3
SHA1 493b890eb72aba7fdc3e9279fc4495be7ca9d71f
SHA512 cb4dedf83c7214f5cecfa36e4ea10925a04866d7e8a4d34336b4531e19137add26f68be5de75964f7009df58638be8e3b19fc9c74d5c0db9db2c27a2647cb881
MD5 SHA1 SHA512

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Version

3.3.2 Pro

Botnet

RemoteHost

vmware.ndnet2.org:2049

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
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-0Y6XB5
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
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 756 set thread context of 660	756	RECEIPT-IMG303948485.exe	29

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1780	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	756	RECEIPT-IMG303948485.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
660	vbc.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 660	756	RECEIPT-IMG303948485.exe	29
PID 756 wrote to memory of 1492	756	RECEIPT-IMG303948485.exe	31
PID 756 wrote to memory of 1492	756	RECEIPT-IMG303948485.exe	31
PID 756 wrote to memory of 1492	756	RECEIPT-IMG303948485.exe	31
PID 756 wrote to memory of 1492	756	RECEIPT-IMG303948485.exe	31
PID 756 wrote to memory of 844	756	RECEIPT-IMG303948485.exe	33
PID 756 wrote to memory of 844	756	RECEIPT-IMG303948485.exe	33
PID 756 wrote to memory of 844	756	RECEIPT-IMG303948485.exe	33
PID 756 wrote to memory of 844	756	RECEIPT-IMG303948485.exe	33
PID 756 wrote to memory of 1928	756	RECEIPT-IMG303948485.exe	34
PID 756 wrote to memory of 1928	756	RECEIPT-IMG303948485.exe	34
PID 756 wrote to memory of 1928	756	RECEIPT-IMG303948485.exe	34
PID 756 wrote to memory of 1928	756	RECEIPT-IMG303948485.exe	34
PID 844 wrote to memory of 1780	844	cmd.exe	37
PID 844 wrote to memory of 1780	844	cmd.exe	37
PID 844 wrote to memory of 1780	844	cmd.exe	37
PID 844 wrote to memory of 1780	844	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\RECEIPT-IMG303948485.exe
"C:\Users\Admin\AppData\Local\Temp\RECEIPT-IMG303948485.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:756
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:660
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\rocksfolds"
  2⤵
  PID:1492
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\rocksfolds\rocksfolds.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:844
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\rocksfolds\rocksfolds.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:1780
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\RECEIPT-IMG303948485.exe" "C:\Users\Admin\AppData\Roaming\rocksfolds\rocksfolds.exe"
  2⤵
  PID:1928

C:\Windows\system32\taskeng.exe
taskeng.exe {E315DA02-56FE-4D7F-8EAB-2DA25D044BF7} S-1-5-21-2329389628-4064185017-3901522362-1000:QSKGHMYQ\Admin:Interactive:[1]
1⤵
PID:1604

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Scripting

T1064

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/660-61-0x0000000000400000-0x000000000047B000-memory.dmp

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memory/660-65-0x0000000000400000-0x000000000047B000-memory.dmp

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memory/660-69-0x0000000000401000-0x0000000000454000-memory.dmp

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memory/660-58-0x0000000000400000-0x000000000047B000-memory.dmp

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memory/660-59-0x0000000000400000-0x000000000047B000-memory.dmp

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memory/660-60-0x0000000000400000-0x000000000047B000-memory.dmp

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memory/660-68-0x0000000000400000-0x000000000047B000-memory.dmp

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memory/660-63-0x0000000000400000-0x000000000047B000-memory.dmp

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memory/660-67-0x0000000076071000-0x0000000076073000-memory.dmp

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memory/660-64-0x0000000000400000-0x000000000047B000-memory.dmp

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memory/660-62-0x0000000000400000-0x000000000047B000-memory.dmp

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memory/660-66-0x0000000000400000-0x000000000047B000-memory.dmp

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memory/756-55-0x00000000744C0000-0x0000000074BAE000-memory.dmp

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memory/756-56-0x0000000000C70000-0x0000000000D3C000-memory.dmp

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memory/756-57-0x0000000004900000-0x0000000004901000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads