remcos | b9669fd190e61892ee488a3123a888aa1ecc4663e007f188fef03f6d15df1671

General

Target

Purchase Order PDF.js
Size

9KB
MD5

e646ada71279124c80535e45c7ec7c3f
SHA1

422b6485e3fb58bed032df79d965c6c3be33f7b5
SHA256

b9669fd190e61892ee488a3123a888aa1ecc4663e007f188fef03f6d15df1671
SHA512

5e1c926fd1a989d4d30809c2eac6350510aeabdb903062cf42afe487218d2ea2eb097b661cd71ae85ef4e3f3d1fb07e4790eeb5c14476499011f7b8f2a18b9f4
SSDEEP

192:P165D3hO1VDAYJM7tUw0NvxixiiIBBu0BhON2p+jXshalppRZoeoo0ns7BBTszZj:94hOrDAZ0NH+t2Bhmppfoo2s7/IMCBL

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

51.75.209.245:2404

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-CMFPLR
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Blocklisted process makes network request 6 IoCs

Processes:

wscript.exe

flow pid process

7 3836 wscript.exe
8 3836 wscript.exe
10 3836 wscript.exe
20 3836 wscript.exe
38 3836 wscript.exe
39 3836 wscript.exe
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

NhGG.exe

pid process

4772 NhGG.exe

flow	pid	process
7	3836	wscript.exe
8	3836	wscript.exe
10	3836	wscript.exe
20	3836	wscript.exe
38	3836	wscript.exe
39	3836	wscript.exe

pid	process
4772	NhGG.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

Processes:

Powershell.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Systjnjem.exe	Powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Systjnjem.exe	Powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

NhGG.exe

description pid process target process

PID 4772 set thread context of 1400 4772 NhGG.exe RegSvcs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

NhGG.exePowershell.exe

pid process

4772 NhGG.exe
4772 NhGG.exe
4772 NhGG.exe
4772 NhGG.exe
5076 Powershell.exe
5076 Powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

NhGG.exePowershell.exe

description pid process

Token: SeDebugPrivilege 4772 NhGG.exe
Token: SeDebugPrivilege 5076 Powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegSvcs.exe

pid process

1400 RegSvcs.exe

description	pid	process	target process
PID 4772 set thread context of 1400	4772	NhGG.exe	RegSvcs.exe

pid	process
4772	NhGG.exe
4772	NhGG.exe
4772	NhGG.exe
4772	NhGG.exe
5076	Powershell.exe
5076	Powershell.exe

description	pid	process
Token: SeDebugPrivilege	4772	NhGG.exe
Token: SeDebugPrivilege	5076	Powershell.exe

pid	process
1400	RegSvcs.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

wscript.exeNhGG.exe

description	pid	process	target process
PID 3836 wrote to memory of 4772	3836	wscript.exe	NhGG.exe
PID 3836 wrote to memory of 4772	3836	wscript.exe	NhGG.exe
PID 3836 wrote to memory of 4772	3836	wscript.exe	NhGG.exe
PID 4772 wrote to memory of 5076	4772	NhGG.exe	Powershell.exe
PID 4772 wrote to memory of 5076	4772	NhGG.exe	Powershell.exe
PID 4772 wrote to memory of 5076	4772	NhGG.exe	Powershell.exe
PID 4772 wrote to memory of 4876	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 4876	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 4876	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1324	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1324	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1324	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe
PID 4772 wrote to memory of 1400	4772	NhGG.exe	RegSvcs.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Purchase Order PDF.js"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3836

C:\Users\Admin\AppData\Local\Temp\NhGG.exe
"C:\Users\Admin\AppData\Local\Temp\NhGG.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4772

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
"Powershell" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\NhGG.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Systjnjem.exe'
3⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5076

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:4876

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:1324

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of SetWindowsHookEx
PID:1400

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
591KB

MD5
ab6ebb46942e94eb3661c4c86b099e8b

SHA1
f54817be0255ff370d2f9272b6593d9aacf1b6b8

SHA256
fff14d27cfcfd3a46729a41bd6dcbb09e667f894e2c85b4e7eb5098faccfa6ab

SHA512
0c548efa026dd3d49b1cbe894ce1f2e75df4f965558e89677ef7199f67d019d4a1bb4ac7624cd1b307515018196b380205bd7aff7e57a2aeffa4418dd101c731

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

Filesize
591KB

MD5
ab6ebb46942e94eb3661c4c86b099e8b

SHA1
f54817be0255ff370d2f9272b6593d9aacf1b6b8

SHA256
fff14d27cfcfd3a46729a41bd6dcbb09e667f894e2c85b4e7eb5098faccfa6ab

SHA512
0c548efa026dd3d49b1cbe894ce1f2e75df4f965558e89677ef7199f67d019d4a1bb4ac7624cd1b307515018196b380205bd7aff7e57a2aeffa4418dd101c731

Download Submit
memory/1324-141-0x0000000000000000-mapping.dmp

Download
memory/1400-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1400-146-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1400-143-0x0000000000000000-mapping.dmp

Download
memory/1400-144-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1400-155-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1400-145-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4772-135-0x00000000007B0000-0x000000000084A000-memory.dmp

Filesize
616KB

Download
memory/4772-132-0x0000000000000000-mapping.dmp

Download
memory/4772-137-0x0000000005350000-0x00000000053EC000-memory.dmp

Filesize
624KB

Download
memory/4772-136-0x0000000005860000-0x0000000005E04000-memory.dmp

Filesize
5.6MB

Download
memory/4876-140-0x0000000000000000-mapping.dmp

Download
memory/5076-138-0x0000000000000000-mapping.dmp

Download
memory/5076-148-0x00000000059E0000-0x0000000005A02000-memory.dmp

Filesize
136KB

Download
memory/5076-142-0x0000000005B10000-0x0000000006138000-memory.dmp

Filesize
6.2MB

Download
memory/5076-149-0x00000000062B0000-0x0000000006316000-memory.dmp

Filesize
408KB

Download
memory/5076-150-0x0000000006390000-0x00000000063F6000-memory.dmp

Filesize
408KB

Download
memory/5076-151-0x0000000006990000-0x00000000069AE000-memory.dmp

Filesize
120KB

Download
memory/5076-152-0x0000000006F60000-0x0000000006FF6000-memory.dmp

Filesize
600KB

Download
memory/5076-153-0x0000000006E70000-0x0000000006E8A000-memory.dmp

Filesize
104KB

Download
memory/5076-154-0x0000000006EF0000-0x0000000006F12000-memory.dmp

Filesize
136KB

Download
memory/5076-139-0x0000000003070000-0x00000000030A6000-memory.dmp

Filesize
216KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads