remcos | a53d11281e99e8c8a4d0ff272ffd32a43e20e5717e484587788060c71795d9da

General

Target

YUMDK25DEL_JC.exe
Size

553KB
MD5

98ccb619eb1a02f1a2e95cd0518cf5eb
SHA1

5b361fb7c2219a8400ba08728472e7f9f4d9d415
SHA256

a53d11281e99e8c8a4d0ff272ffd32a43e20e5717e484587788060c71795d9da
SHA512

3ca231c52b04bf3a7f0cccabec1a010667573081b0e25a0d24e750b80195183270e7f2ae64e1c584ec58f09e128fb2c3d770be8f8ee55e3093c2c2b2b5c02448
SSDEEP

12288:oGuhPRUEYFZ/G0T513A15yvB5unvEBqITV7xzloOd8WJK8ap7K0Y9fcv:xuhPeHFp33/vKveqITJxelp8ap7o9U

Score

10^/10

remcos 777777 rat

Malware Config

Extracted

Family

remcos

Botnet

777777

C2

moremoney.myftp.org:6609

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-ZTIL9N
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

Executes dropped EXE 1 IoCs

pid	Process
4612	Phtos.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4928 set thread context of 4824	4928	YUMDK25DEL_JC.exe	87

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3808	4824	WerFault.exe	87

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/Job

T1053

pid	Process
3952	schtasks.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4824	4928	YUMDK25DEL_JC.exe	87
PID 4928 wrote to memory of 4144	4928	YUMDK25DEL_JC.exe	88
PID 4928 wrote to memory of 4144	4928	YUMDK25DEL_JC.exe	88
PID 4928 wrote to memory of 4144	4928	YUMDK25DEL_JC.exe	88
PID 4928 wrote to memory of 700	4928	YUMDK25DEL_JC.exe	90
PID 4928 wrote to memory of 700	4928	YUMDK25DEL_JC.exe	90
PID 4928 wrote to memory of 700	4928	YUMDK25DEL_JC.exe	90
PID 4928 wrote to memory of 1932	4928	YUMDK25DEL_JC.exe	89
PID 4928 wrote to memory of 1932	4928	YUMDK25DEL_JC.exe	89
PID 4928 wrote to memory of 1932	4928	YUMDK25DEL_JC.exe	89
PID 700 wrote to memory of 3952	700	cmd.exe	94
PID 700 wrote to memory of 3952	700	cmd.exe	94
PID 700 wrote to memory of 3952	700	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\YUMDK25DEL_JC.exe
"C:\Users\Admin\AppData\Local\Temp\YUMDK25DEL_JC.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:4824
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4824 -s 512
    3⤵
    - Program crash
    PID:3808
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c mkdir "C:\Users\Admin\AppData\Local\Temp\Phtos"
  2⤵
  PID:4144
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\YUMDK25DEL_JC.exe" "C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe"
  2⤵
  PID:1932
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:700
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:3952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4824 -ip 4824
1⤵
PID:1216

C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe
C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe
1⤵
- Executes dropped EXE
PID:4612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Scripting

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe

Filesize
553KB

MD5
98ccb619eb1a02f1a2e95cd0518cf5eb

SHA1
5b361fb7c2219a8400ba08728472e7f9f4d9d415

SHA256
a53d11281e99e8c8a4d0ff272ffd32a43e20e5717e484587788060c71795d9da

SHA512
3ca231c52b04bf3a7f0cccabec1a010667573081b0e25a0d24e750b80195183270e7f2ae64e1c584ec58f09e128fb2c3d770be8f8ee55e3093c2c2b2b5c02448

Download Submit
C:\Users\Admin\AppData\Local\Temp\Phtos\Phtos.exe

Filesize
553KB

MD5
98ccb619eb1a02f1a2e95cd0518cf5eb

SHA1
5b361fb7c2219a8400ba08728472e7f9f4d9d415

SHA256
a53d11281e99e8c8a4d0ff272ffd32a43e20e5717e484587788060c71795d9da

SHA512
3ca231c52b04bf3a7f0cccabec1a010667573081b0e25a0d24e750b80195183270e7f2ae64e1c584ec58f09e128fb2c3d770be8f8ee55e3093c2c2b2b5c02448

Download Submit
memory/4612-22-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4824-5-0x0000000000620000-0x00000000006A2000-memory.dmp

Filesize
520KB

Download
memory/4824-11-0x0000000000620000-0x00000000006A2000-memory.dmp

Filesize
520KB

Download
memory/4824-19-0x0000000000620000-0x00000000006A2000-memory.dmp

Filesize
520KB

Download
memory/4928-0-0x0000000000B60000-0x0000000000BF0000-memory.dmp

Filesize
576KB

Download
memory/4928-1-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4928-2-0x0000000005730000-0x0000000005740000-memory.dmp

Filesize
64KB

Download
memory/4928-3-0x00000000055C0000-0x0000000005626000-memory.dmp

Filesize
408KB

Download
memory/4928-13-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads