remcos | db693a6e2d410779dd0406e72d770fc10e682442658eec302b9254ff1f708727

Analysis

max time kernel
266s
max time network
256s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 09:41

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General

Target

8a1aefc.exe
Size

729KB
MD5

ab910af97f58303c92c89331b3573211
SHA1

84bd15105f9a60fdb63831e631a2ae7ea2ad6b12
SHA256

db693a6e2d410779dd0406e72d770fc10e682442658eec302b9254ff1f708727
SHA512

6469793738cb9f7cb8ec5b3529add7cf4e557a66559f9c3d6de3c8d72fa69204fa8f7d9b09c1e8f0fd7f0ccdb6dc243783737ff6f1d29136e5416604d8ea58a6
SSDEEP

12288:D4b4eMrbvbVqjEHsAGM6us7Fg5D+O0UZ0CDzc5IKBtxRvK/sp5:F+GsAxs7iDhF6CXcHI/s

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

iwehfojesnojene.con-ip.com:1883

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-WZV6ZW
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:

8a1aefc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\FE01DB47E6914C4FAE1FE250319625D9 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\8a1aefc.exe\""	8a1aefc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

8a1aefc.exe

description pid process target process

PID 4304 set thread context of 1704 4304 8a1aefc.exe InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

8a1aefc.exe

description pid process

Token: SeDebugPrivilege 4304 8a1aefc.exe

description	pid	process	target process
PID 4304 set thread context of 1704	4304	8a1aefc.exe	InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	4304	8a1aefc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

8a1aefc.exe

description	pid	process	target process
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe
PID 4304 wrote to memory of 1704	4304	8a1aefc.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\8a1aefc.exe
"C:\Users\Admin\AppData\Local\Temp\8a1aefc.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4304

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
2⤵
PID:1704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1704-135-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1704-136-0x000000000043292E-mapping.dmp

Download
memory/4304-132-0x000001E6EA300000-0x000001E6EA3BA000-memory.dmp

Filesize
744KB

Download
memory/4304-133-0x00007FFAFB0B0000-0x00007FFAFBB71000-memory.dmp

Filesize
10.8MB

Download
memory/4304-134-0x00007FFAFB0B0000-0x00007FFAFBB71000-memory.dmp

Filesize
10.8MB

Download