remcos | 145f990406000a1e944fef609e608edd4f6a347d4038e880599bcc1fb6c709b7

Analysis

max time kernel
149s
max time network
155s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
02-04-2024 16:18

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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 collection rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

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

NirSoft MailPassView 4 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/4644-57-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4644-65-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1124-88-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1124-94-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 4 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/2300-55-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2300-68-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3704-87-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3704-98-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 12 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2300-55-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4644-57-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4008-64-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4644-65-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4008-66-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2300-68-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1124-88-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3704-87-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3704-98-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2972-99-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2972-100-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1124-94-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

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

1532 excel.exe

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

pid	process
1532	excel.exe

Accesses Microsoft Outlook accounts 1 TTPs 2 IoCs

collection

Email Collection

T1114

Processes:

svchost.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-647252928-2816094679-1307623958-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe
Key opened	\REGISTRY\USER\S-1-5-21-647252928-2816094679-1307623958-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.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 7 IoCs

Processes:

excel.exesvchost.exe

description	pid	process	target process
PID 1532 set thread context of 4952	1532	excel.exe	svchost.exe
PID 4952 set thread context of 2300	4952	svchost.exe	svchost.exe
PID 4952 set thread context of 4644	4952	svchost.exe	svchost.exe
PID 4952 set thread context of 4008	4952	svchost.exe	svchost.exe
PID 4952 set thread context of 3704	4952	svchost.exe	svchost.exe
PID 4952 set thread context of 1124	4952	svchost.exe	svchost.exe
PID 4952 set thread context of 2972	4952	svchost.exe	svchost.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

svchost.exesvchost.exesvchost.exesvchost.exe

pid	process
2300	svchost.exe
2300	svchost.exe
4008	svchost.exe
4008	svchost.exe
2300	svchost.exe
2300	svchost.exe
3704	svchost.exe
3704	svchost.exe
3704	svchost.exe
3704	svchost.exe
2972	svchost.exe
2972	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

svchost.exe

pid process

4952 svchost.exe
Suspicious behavior: MapViewOfSection 9 IoCs

Processes:

excel.exesvchost.exe

pid process

1532 excel.exe
4952 svchost.exe
4952 svchost.exe
4952 svchost.exe
4952 svchost.exe
4952 svchost.exe
4952 svchost.exe
4952 svchost.exe
4952 svchost.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

svchost.exesvchost.exe

description pid process

Token: SeDebugPrivilege 4008 svchost.exe
Token: SeDebugPrivilege 2972 svchost.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Quotation.exeexcel.exe

pid process

5044 Quotation.exe
5044 Quotation.exe
1532 excel.exe
1532 excel.exe
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Quotation.exeexcel.exe

pid process

5044 Quotation.exe
5044 Quotation.exe
1532 excel.exe
1532 excel.exe

pid	process
4952	svchost.exe

pid	process
1532	excel.exe
4952	svchost.exe
4952	svchost.exe
4952	svchost.exe
4952	svchost.exe
4952	svchost.exe
4952	svchost.exe
4952	svchost.exe
4952	svchost.exe

description	pid	process
Token: SeDebugPrivilege	4008	svchost.exe
Token: SeDebugPrivilege	2972	svchost.exe

pid	process
5044	Quotation.exe
5044	Quotation.exe
1532	excel.exe
1532	excel.exe

pid	process
5044	Quotation.exe
5044	Quotation.exe
1532	excel.exe
1532	excel.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

Quotation.exeexcel.exesvchost.exe

description	pid	process	target process
PID 5044 wrote to memory of 1532	5044	Quotation.exe	excel.exe
PID 5044 wrote to memory of 1532	5044	Quotation.exe	excel.exe
PID 5044 wrote to memory of 1532	5044	Quotation.exe	excel.exe
PID 1532 wrote to memory of 4952	1532	excel.exe	svchost.exe
PID 1532 wrote to memory of 4952	1532	excel.exe	svchost.exe
PID 1532 wrote to memory of 4952	1532	excel.exe	svchost.exe
PID 1532 wrote to memory of 4952	1532	excel.exe	svchost.exe
PID 4952 wrote to memory of 2300	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 2300	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 2300	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 2300	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4644	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4644	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4644	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4644	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 3020	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 3020	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 3020	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4008	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4008	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4008	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4008	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 3704	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 3704	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 3704	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 3704	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 1124	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 1124	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 1124	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 1124	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4984	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4984	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 4984	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 2972	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 2972	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 2972	4952	svchost.exe	svchost.exe
PID 4952 wrote to memory of 2972	4952	svchost.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:5044

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:1532

C:\Windows\SysWOW64\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4952

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\gabydxzkmzdohshwukgdldukgq"
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2300

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\quordhkmihvtryvidvteoipapwyqg"
4⤵
- Accesses Microsoft Outlook accounts
PID:4644

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\swtbwaufwpngtejmuggyzvjjylhzhnxhn"
4⤵
PID:3020

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\swtbwaufwpngtejmuggyzvjjylhzhnxhn"
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4008

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\chzktmvolfamdhxeijoduykrevuij"
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3704

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\mkeuuegqznsqnvliatifflfifblrkxhfq"
4⤵
- Accesses Microsoft Outlook accounts
PID:1124

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\xeknv"
4⤵
PID:4984

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\xeknv"
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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\gabydxzkmzdohshwukgdldukgq

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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
104.4MB

MD5
e60cb4e32cac1fea784afd8af6262bec

SHA1
290195f2c7d1563961d738421de9a0967bfa34a7

SHA256
43eee829bdb467bed7ea6907eed8ced3e36e663df0407dff1c4757086f88212d

SHA512
9f0af51cbdd9f6ec20d58797458c43df27fb24e65b63d8e9af1765bfd77687f36c2f69d18d97fbc4d14a3dc6b31939d05d16bfc71eca95fc86a470056cb97b70

Download Submit
memory/1124-86-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1124-94-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1124-88-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2300-55-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2300-50-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2300-47-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2300-68-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2972-100-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2972-99-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2972-97-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3704-98-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3704-89-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3704-87-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3704-84-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4008-66-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4008-64-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4008-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4008-52-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4644-65-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4644-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4644-58-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4644-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4644-53-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4952-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-70-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4952-74-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4952-73-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4952-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-75-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4952-77-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4952-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-104-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4952-105-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5044-10-0x0000000003BE0000-0x0000000003BE4000-memory.dmp

Filesize
16KB

Download