remcos | 5f41a3813e433c05444cc3f8b3f41e4284b3b27af7c476704bcebe170098780f

General

Target

Quotation.exe
Size

1.4MB
MD5

b637de26aa293e2d88beb31e09febd46
SHA1

a800c3b4defa12246ad3d6b9e70f1aa02e2d7623
SHA256

ca52caeb15fde0f171362e3e7771edecc44f2e582cccaa0fedbd6012669076d7
SHA512

c2b8febd7e296aa35b003b5637f911dd17df2303677126d5da97de2341a4aec2ac1b3b2b5bd2bbdf8288d71d1027b4489fd75eb638153754bb50a4820bb8e437
SSDEEP

24576:tqDEvCTbMWu7rQYlBQcBiT6rprG8a61SU+YLo06JKBqM02XjJxn:tTvC/MTQYxsWR7a6gU+OV6JKcM0uj

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

shgoini.com:30902

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-7XHN5V
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
Drops startup file 1 IoCs

Processes:

excel.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\excel.vbs excel.exe
Executes dropped EXE 1 IoCs

Processes:

excel.exe

pid process

1728 excel.exe
Loads dropped DLL 1 IoCs

Processes:

Quotation.exe

pid process

2884 Quotation.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\excel.vbs	excel.exe

pid	process
1728	excel.exe

pid	process
2884	Quotation.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\directory\excel.exe	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

excel.exe

description pid process target process

PID 1728 set thread context of 2080 1728 excel.exe svchost.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

svchost.exe

pid process

2080 svchost.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

excel.exe

pid process

1728 excel.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Quotation.exeexcel.exe

pid process

2884 Quotation.exe
2884 Quotation.exe
1728 excel.exe
1728 excel.exe
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Quotation.exeexcel.exe

pid process

2884 Quotation.exe
2884 Quotation.exe
1728 excel.exe
1728 excel.exe

description	pid	process	target process
PID 1728 set thread context of 2080	1728	excel.exe	svchost.exe

pid	process
2080	svchost.exe

pid	process
1728	excel.exe

pid	process
2884	Quotation.exe
2884	Quotation.exe
1728	excel.exe
1728	excel.exe

pid	process
2884	Quotation.exe
2884	Quotation.exe
1728	excel.exe
1728	excel.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Quotation.exeexcel.exe

description	pid	process	target process
PID 2884 wrote to memory of 1728	2884	Quotation.exe	excel.exe
PID 2884 wrote to memory of 1728	2884	Quotation.exe	excel.exe
PID 2884 wrote to memory of 1728	2884	Quotation.exe	excel.exe
PID 2884 wrote to memory of 1728	2884	Quotation.exe	excel.exe
PID 2884 wrote to memory of 1728	2884	Quotation.exe	excel.exe
PID 2884 wrote to memory of 1728	2884	Quotation.exe	excel.exe
PID 2884 wrote to memory of 1728	2884	Quotation.exe	excel.exe
PID 1728 wrote to memory of 2080	1728	excel.exe	svchost.exe
PID 1728 wrote to memory of 2080	1728	excel.exe	svchost.exe
PID 1728 wrote to memory of 2080	1728	excel.exe	svchost.exe
PID 1728 wrote to memory of 2080	1728	excel.exe	svchost.exe
PID 1728 wrote to memory of 2080	1728	excel.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
1⤵
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2884

C:\Users\Admin\AppData\Local\directory\excel.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
2⤵
- Drops startup file
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1728

C:\Windows\SysWOW64\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
PID:2080

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ambiparous
Filesize
483KB

MD5
5836e6fb1198f5826ca8facdba529e79

SHA1
cc17afcef2c435265036b8520728963b91ae652c

SHA256
f59b9e90acdbe2a0cc3e5e66bb3214adb7506fc775b8264e36e408a21decfba0

SHA512
f66d5d9e96911ffe7228d2db7b305ee404ba59d25fcde778d00a590417e3606b72dac0a91b7edb4e5d42f7a5a14990eaf4b5058e16ca5e12b49701c6168e3045

Download Submit
C:\Users\Admin\AppData\Local\Temp\intersentimental
Filesize
29KB

MD5
33b3a37e1729538227a84e8aec307e27

SHA1
d888cf3906a4bc58ccc74cba9fe6f314d3be29dd

SHA256
61616629bc83442de66185fb8a8b3ed37d4fc690d473e28cf570527a5db7d456

SHA512
7d1f025b2c18f6b1e7d1793897a17bc36f95a417d1764efc109144b0ffbb8c0a43ea216cab1e3d16935565bcd309ac8845e9df1805f99a1ac8d1f687ad52ef80

Download Submit
\Users\Admin\AppData\Local\directory\excel.exe
Filesize
106.4MB

MD5
517478c26983b30fa50e01cb95affeb7

SHA1
a864ef23f3d05aef07a46e3fe9a284535fbe3b73

SHA256
cf288b019d7b5fd36bb27867f6cb5f897eb1929f4b75b24079c9fc16a4ac3007

SHA512
d5cc9c313c5af2dced3f5c0c2b571fb1530f18246f8f15bf7d62ec440b2d2115a56784c1a98ae080e9cb00c136410e78baa2c59f7b5eb01a965b6df4758fcdc5

Download Submit
memory/2080-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2080-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2884-10-0x0000000000120000-0x0000000000124000-memory.dmp

Filesize
16KB

Download

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