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

2624 excel.exe

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

pid	process
2624	excel.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

Processes:

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

excel.exe

description pid process target process

PID 2624 set thread context of 4612 2624 excel.exe svchost.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

excel.exe

pid process

2624 excel.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

svchost.exe

description pid process

Token: SeManageVolumePrivilege 4352 svchost.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Quotation.exeexcel.exe

pid process

4736 Quotation.exe
4736 Quotation.exe
2624 excel.exe
2624 excel.exe
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Quotation.exeexcel.exe

pid process

4736 Quotation.exe
4736 Quotation.exe
2624 excel.exe
2624 excel.exe

description	pid	process	target process
PID 2624 set thread context of 4612	2624	excel.exe	svchost.exe

pid	process
2624	excel.exe

description	pid	process
Token: SeManageVolumePrivilege	4352	svchost.exe

pid	process
4736	Quotation.exe
4736	Quotation.exe
2624	excel.exe
2624	excel.exe

pid	process
4736	Quotation.exe
4736	Quotation.exe
2624	excel.exe
2624	excel.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

Quotation.exeexcel.exe

description	pid	process	target process
PID 4736 wrote to memory of 2624	4736	Quotation.exe	excel.exe
PID 4736 wrote to memory of 2624	4736	Quotation.exe	excel.exe
PID 4736 wrote to memory of 2624	4736	Quotation.exe	excel.exe
PID 2624 wrote to memory of 4612	2624	excel.exe	svchost.exe
PID 2624 wrote to memory of 4612	2624	excel.exe	svchost.exe
PID 2624 wrote to memory of 4612	2624	excel.exe	svchost.exe
PID 2624 wrote to memory of 4612	2624	excel.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4736

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:2624

C:\Windows\SysWOW64\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
3⤵
PID:4612

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:220

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4352

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
C:\Users\Admin\AppData\Local\directory\excel.exe
Filesize
108.4MB

MD5
1878ed8f86e464d1b474571a34a75a98

SHA1
e06eabaf88909ae0bb0cc9cc29b50069741b84fe

SHA256
7311f971ed4303955b9576add44ba70569c0995ffc935e02bf7e9d7187388241

SHA512
7539fc21cfb7250d90ae9ebc34aa33956e8e51622ea7ac977397de86715b9d79745250b092bf13c8da2041f6ab4114bd03877c4b8c7bf5ac02e6059a52d2cd82

Download Submit
memory/4612-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-88-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4612-92-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4736-10-0x0000000000CE0000-0x0000000000CE4000-memory.dmp

Filesize
16KB

Download

Analysis

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