remcos | 37c07fe1f282439787db1d3eb77ded8c635ea9e73960230c126d889322e08fee

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
05/06/2024, 01:22

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General

Target
37c07fe1f282439787db1d3eb77ded8c635ea9e73960230c126d889322e08fee.exe
Size 542KB
Sample240605-brndxaag22
SHA256 37c07fe1f282439787db1d3eb77ded8c635ea9e73960230c126d889322e08fee
MD5 fdcf6f5fcb9c38b56da45f617a48c209
SHA1 91dce23e917a6641958a1ce475cd167a6c8ef9d2
SHA512 998a71a360291144d05de266c8b86766767d9c218bc87190da1ea96434d85c75d6adfa3442255cf32f9007e8d77f51ffc9f8a17ab8e53ed61298a675f43f77b0
SSDEEP 6144:JFLHZGUkKUedkxe3L684d83LRRwmzzDWN+u2jHyXdg/hXvCQahL2zgC02jHG5N7F:XDZG81degL6mtRvnLj/hKXSjrYNAmSK
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos windows rat

Malware Config

Extracted

Family

remcos

Botnet

windows

96.47.235.152:2024

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-CY2YU2
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

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 16 IoCs

resource	yara_rule
behavioral2/memory/4552-3-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-7-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-11-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-13-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-15-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-18-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-22-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-25-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-27-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-31-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-34-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-37-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-39-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-43-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-46-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4552-48-0x0000000000400000-0x0000000001C03000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Program crash 26 IoCs

pid	pid_target	Process	procid_target
1820	4552	WerFault.exe	81
2304	4552	WerFault.exe	81
4300	4552	WerFault.exe	81
740	4552	WerFault.exe	81
2088	4552	WerFault.exe	81
4760	4552	WerFault.exe	81
2384	4552	WerFault.exe	81
2512	4552	WerFault.exe	81
2540	4552	WerFault.exe	81
4520	4552	WerFault.exe	81
2000	4552	WerFault.exe	81
4244	4552	WerFault.exe	81
896	4552	WerFault.exe	81
1524	4552	WerFault.exe	81
3604	4552	WerFault.exe	81
1440	4552	WerFault.exe	81
3728	4552	WerFault.exe	81
2088	4552	WerFault.exe	81
3600	4552	WerFault.exe	81
4520	4552	WerFault.exe	81
2000	4552	WerFault.exe	81
2740	4552	WerFault.exe	81
2640	4552	WerFault.exe	81
3608	4552	WerFault.exe	81
3648	4552	WerFault.exe	81
1372	4552	WerFault.exe	81

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4552	37c07fe1f282439787db1d3eb77ded8c635ea9e73960230c126d889322e08fee.exe

C:\Users\Admin\AppData\Local\Temp\37c07fe1f282439787db1d3eb77ded8c635ea9e73960230c126d889322e08fee.exe
"C:\Users\Admin\AppData\Local\Temp\37c07fe1f282439787db1d3eb77ded8c635ea9e73960230c126d889322e08fee.exe"
1⤵
- Suspicious use of SetWindowsHookEx
PID:4552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 620
  2⤵
  - Program crash
  PID:1820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 660
  2⤵
  - Program crash
  PID:2304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 716
  2⤵
  - Program crash
  PID:4300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 664
  2⤵
  - Program crash
  PID:740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 748
  2⤵
  - Program crash
  PID:2088
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 776
  2⤵
  - Program crash
  PID:4760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 808
  2⤵
  - Program crash
  PID:2384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 840
  2⤵
  - Program crash
  PID:2512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 980
  2⤵
  - Program crash
  PID:2540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 980
  2⤵
  - Program crash
  PID:4520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 1008
  2⤵
  - Program crash
  PID:2000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 1056
  2⤵
  - Program crash
  PID:4244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 1116
  2⤵
  - Program crash
  PID:896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 1232
  2⤵
  - Program crash
  PID:1524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 764
  2⤵
  - Program crash
  PID:3604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 916
  2⤵
  - Program crash
  PID:1440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 1496
  2⤵
  - Program crash
  PID:3728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 1488
  2⤵
  - Program crash
  PID:2088
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 756
  2⤵
  - Program crash
  PID:3600
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 764
  2⤵
  - Program crash
  PID:4520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 1488
  2⤵
  - Program crash
  PID:2000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 1352
  2⤵
  - Program crash
  PID:2740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 1476
  2⤵
  - Program crash
  PID:2640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 976
  2⤵
  - Program crash
  PID:3608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 984
  2⤵
  - Program crash
  PID:3648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 756
  2⤵
  - Program crash
  PID:1372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4552 -ip 4552
1⤵
PID:1548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4552 -ip 4552
1⤵
PID:1196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4552 -ip 4552
1⤵
PID:4892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4552 -ip 4552
1⤵
PID:4764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4552 -ip 4552
1⤵
PID:2752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4552 -ip 4552
1⤵
PID:4192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4552 -ip 4552
1⤵
PID:2792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4552 -ip 4552
1⤵
PID:2008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4552 -ip 4552
1⤵
PID:1464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4552 -ip 4552
1⤵
PID:2348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4552 -ip 4552
1⤵
PID:2764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4552 -ip 4552
1⤵
PID:1700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4552 -ip 4552
1⤵
PID:3252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4552 -ip 4552
1⤵
PID:3992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4552 -ip 4552
1⤵
PID:5004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4552 -ip 4552
1⤵
PID:668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4552 -ip 4552
1⤵
PID:5048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4552 -ip 4552
1⤵
PID:2052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4552 -ip 4552
1⤵
PID:4192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4552 -ip 4552
1⤵
PID:5104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 4552 -ip 4552
1⤵
PID:3788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 616 -p 4552 -ip 4552
1⤵
PID:1988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 612 -p 4552 -ip 4552
1⤵
PID:1620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 4552 -ip 4552
1⤵
PID:1556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 628 -p 4552 -ip 4552
1⤵
PID:2832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 4552 -ip 4552
1⤵
PID:216

Network

MITRE ATT&CK Matrix

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Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 144B
SHA256 12454b444b45734b6e3c6defc65bad5147a06f2834764fa779c456bfde287292
MD5 04e5f23d54dc0383567ffb7b79e7300f
SHA1 ba4191eee7a250a4b85dddbfb67fe5cb7cece10e
SHA512 bb963c4a30bc5c656ed75249b81233f61cc3ee09d563d8110eeeabe98335b065e40211976ce6ed698f7b407325da4fe8da2ecf55b6e0220277464438dd0e573e
MD5 SHA1 SHA512

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memory/4552-18-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-3-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4552-7-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-9-0x0000000001E40000-0x0000000001F40000-memory.dmp

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memory/4552-12-0x0000000002070000-0x00000000020EA000-memory.dmp

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memory/4552-11-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-13-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4552-2-0x0000000002070000-0x00000000020EA000-memory.dmp

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memory/4552-1-0x0000000001E40000-0x0000000001F40000-memory.dmp

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memory/4552-15-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-27-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-25-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-22-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-31-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-34-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-37-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-39-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-43-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-46-0x0000000000400000-0x0000000001C03000-memory.dmp

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memory/4552-48-0x0000000000400000-0x0000000001C03000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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