remcos | a04d627bf01f18ee5ca0d47dac132c9ae2f12973aa9c54c331170d67967deb7d

General

Target

RFQ Ref. # IRQ2107778.exe
Size

10KB
MD5

cce6e8d9ae963fa8302c2bbc97f370a7
SHA1

3eebf4b284be934352cdb06b4b6681207f617671
SHA256

a04d627bf01f18ee5ca0d47dac132c9ae2f12973aa9c54c331170d67967deb7d
SHA512

e7e263154281e74316e209ac37d79a707101a0e1bb88d58a07624ed62ec14108dce194d9f0001283b29dce65622ceb69ea85b10ba8c976b3ee1d0962ebb6b775
SSDEEP

96:QukL9i1U6eM1G1JgYqBTQmkjy1edaKN66NyniOq5EwExo8zNt:QfSUVM14+YpLwCSbzn

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

obologs.work.gd:4044

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-0IY2Q2
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

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:

RFQ Ref. # IRQ2107778.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	RFQ Ref. # IRQ2107778.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RFQ Ref. # IRQ2107778.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Hvrdytwiew = "\"C:\\Users\\Admin\\AppData\\Roaming\\Fvtphl\\Hvrdytwiew.exe\""	RFQ Ref. # IRQ2107778.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

RFQ Ref. # IRQ2107778.exe

description pid process target process

PID 4352 set thread context of 2452 4352 RFQ Ref. # IRQ2107778.exe aspnet_compiler.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 2 IoCs

Processes:

powershell.exe

pid process

1852 powershell.exe
1852 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RFQ Ref. # IRQ2107778.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4352 RFQ Ref. # IRQ2107778.exe
Token: SeDebugPrivilege 1852 powershell.exe

description	pid	process	target process
PID 4352 set thread context of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe

pid	process
1852	powershell.exe
1852	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4352	RFQ Ref. # IRQ2107778.exe
Token: SeDebugPrivilege	1852	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

RFQ Ref. # IRQ2107778.exe

description	pid	process	target process
PID 4352 wrote to memory of 1852	4352	RFQ Ref. # IRQ2107778.exe	powershell.exe
PID 4352 wrote to memory of 1852	4352	RFQ Ref. # IRQ2107778.exe	powershell.exe
PID 4352 wrote to memory of 1852	4352	RFQ Ref. # IRQ2107778.exe	powershell.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe
PID 4352 wrote to memory of 2452	4352	RFQ Ref. # IRQ2107778.exe	aspnet_compiler.exe

C:\Users\Admin\AppData\Local\Temp\RFQ Ref. # IRQ2107778.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ Ref. # IRQ2107778.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4352

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1852

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
2⤵
PID:2452

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1852-140-0x0000000006060000-0x00000000060C6000-memory.dmp

Filesize
408KB

Download
memory/1852-143-0x0000000006B80000-0x0000000006B9A000-memory.dmp

Filesize
104KB

Download
memory/1852-141-0x0000000006690000-0x00000000066AE000-memory.dmp

Filesize
120KB

Download
memory/1852-142-0x0000000007D00000-0x000000000837A000-memory.dmp

Filesize
6.5MB

Download
memory/1852-136-0x0000000000000000-mapping.dmp

Download
memory/1852-137-0x00000000030B0000-0x00000000030E6000-memory.dmp

Filesize
216KB

Download
memory/1852-138-0x0000000005760000-0x0000000005D88000-memory.dmp

Filesize
6.2MB

Download
memory/1852-139-0x0000000005E40000-0x0000000005EA6000-memory.dmp

Filesize
408KB

Download
memory/2452-145-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2452-149-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2452-144-0x0000000000000000-mapping.dmp

Download
memory/2452-146-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2452-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2452-148-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-134-0x0000000007570000-0x0000000007B14000-memory.dmp

Filesize
5.6MB

Download
memory/4352-135-0x0000000006EF0000-0x0000000006F12000-memory.dmp

Filesize
136KB

Download
memory/4352-133-0x0000000006F20000-0x0000000006FB2000-memory.dmp

Filesize
584KB

Download
memory/4352-132-0x0000000000560000-0x0000000000568000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads