remcos | 341e2d5159578433b9509ab15c1b2acd52162a51531d8c94689286a91eebcdc4

General

Target

ed7fa6ec8aa0602b18ac40bf6abff7e6.exe
Size

1.8MB
MD5

ed7fa6ec8aa0602b18ac40bf6abff7e6
SHA1

21f14e8533a1143001c0bc1a842cb4f9f4c69a8a
SHA256

341e2d5159578433b9509ab15c1b2acd52162a51531d8c94689286a91eebcdc4
SHA512

3388db86341f13ed30d40942df6b1844c6ebdbe7a360749edec9b23b87ca106ae90082c08648308fc9a9f78a4ffdd0c92855b090aeca52ddc00a903834d856e7
SSDEEP

12288:Lnjo5JZCGepoAgPBEudDgeOYnWZQzjFeM6DJOjB9sTTHyOx+mRfGrwmMeOS34MIy:6ZL0QpfnYQb6VOUROrwE

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

mam.mastercoa.co:37824

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-3FCFQU
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ed7fa6ec8aa0602b18ac40bf6abff7e6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\Kbvypcxq = "\"C:\\Users\\Admin\\AppData\\Roaming\\Eygho\\Kbvypcxq.exe\""	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

ed7fa6ec8aa0602b18ac40bf6abff7e6.exe

description pid process target process

PID 1824 set thread context of 916 1824 ed7fa6ec8aa0602b18ac40bf6abff7e6.exe InstallUtil.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.exeed7fa6ec8aa0602b18ac40bf6abff7e6.exe

pid process

1940 powershell.exe
1824 ed7fa6ec8aa0602b18ac40bf6abff7e6.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeed7fa6ec8aa0602b18ac40bf6abff7e6.exe

description pid process

Token: SeDebugPrivilege 1940 powershell.exe
Token: SeDebugPrivilege 1824 ed7fa6ec8aa0602b18ac40bf6abff7e6.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

InstallUtil.exe

pid process

916 InstallUtil.exe

description	pid	process	target process
PID 1824 set thread context of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe

pid	process
1940	powershell.exe
1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe

description	pid	process
Token: SeDebugPrivilege	1940	powershell.exe
Token: SeDebugPrivilege	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe

pid	process
916	InstallUtil.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

ed7fa6ec8aa0602b18ac40bf6abff7e6.exe

description	pid	process	target process
PID 1824 wrote to memory of 1940	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	powershell.exe
PID 1824 wrote to memory of 1940	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	powershell.exe
PID 1824 wrote to memory of 1940	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	powershell.exe
PID 1824 wrote to memory of 1940	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	powershell.exe
PID 1824 wrote to memory of 1840	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 1840	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 1840	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 1840	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 1840	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 1840	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 1840	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe
PID 1824 wrote to memory of 916	1824	ed7fa6ec8aa0602b18ac40bf6abff7e6.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\ed7fa6ec8aa0602b18ac40bf6abff7e6.exe
"C:\Users\Admin\AppData\Local\Temp\ed7fa6ec8aa0602b18ac40bf6abff7e6.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1824

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQA1AA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1940

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
PID:1840

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
- Suspicious use of SetWindowsHookEx
PID:916

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/916-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-74-0x00000000004327A4-mapping.dmp

Download
memory/916-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/916-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1824-55-0x0000000000AA0000-0x0000000000B82000-memory.dmp

Filesize
904KB

Download
memory/1824-54-0x0000000001310000-0x00000000014D6000-memory.dmp

Filesize
1.8MB

Download
memory/1824-56-0x0000000004BB0000-0x0000000004C42000-memory.dmp

Filesize
584KB

Download
memory/1940-60-0x000000006F400000-0x000000006F9AB000-memory.dmp

Filesize
5.7MB

Download
memory/1940-59-0x000000006F400000-0x000000006F9AB000-memory.dmp

Filesize
5.7MB

Download
memory/1940-58-0x0000000075571000-0x0000000075573000-memory.dmp

Filesize
8KB

Download
memory/1940-57-0x0000000000000000-mapping.dmp

Download

Analysis

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