remcos | 8ef34844e6afd1883f99190ef742b3a42b74241bc686a4ef936c633a3cb5cef3

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 09:57

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General

Target

6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe
Size

1.1MB
MD5

6e1e41bf3127907a5a01d5a000cee252
SHA1

b199f2488849b3bcad92e85190d2525422b1a644
SHA256

8ef34844e6afd1883f99190ef742b3a42b74241bc686a4ef936c633a3cb5cef3
SHA512

7f8915885a1109c4eb4ec2a1045d58cb765a1cb40925867ee7d74c8f64412bc7534571afb3fab0ca92ef7d40e818a4edf082f29aca753bea2c46cbc1dc0478d9
SSDEEP

24576:GAHnh+eWsN3skA4RV1Hom2KXMmHajDt7YYruPj5:hh+ZkldoPK8YajDt7Yz

Score

10^/10

remcos remotehost rat upx

Malware Config

Extracted

Family

remcos

Version

2.0.7 Pro

Botnet

RemoteHost

162.241.190.159:1256

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-PZ68CF
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 BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2672-2-0x0000000000400000-0x0000000000424000-memory.dmp	upx
behavioral1/memory/2672-9-0x0000000000400000-0x0000000000424000-memory.dmp	upx
behavioral1/memory/2672-10-0x0000000000400000-0x0000000000424000-memory.dmp	upx
behavioral1/memory/2672-11-0x0000000000400000-0x0000000000424000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

Processes:

6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe

description pid process target process

PID 1732 set thread context of 2672 1732 6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe svchost.exe

description	pid	process	target process
PID 1732 set thread context of 2672	1732	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe	svchost.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe

description	pid	process	target process
PID 1732 wrote to memory of 2672	1732	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe	svchost.exe
PID 1732 wrote to memory of 2672	1732	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe	svchost.exe
PID 1732 wrote to memory of 2672	1732	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe	svchost.exe
PID 1732 wrote to memory of 2672	1732	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe	svchost.exe
PID 1732 wrote to memory of 2672	1732	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe	svchost.exe
PID 1732 wrote to memory of 2672	1732	6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6e1e41bf3127907a5a01d5a000cee252_JaffaCakes118.exe"
1⤵
- Checks BIOS information in registry
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious use of WriteProcessMemory
PID:1732

C:\Windows\SysWOW64\svchost.exe
"C:\Windows\System32\svchost.exe"
2⤵
PID:2672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1732-0-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2672-1-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2672-2-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2672-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2672-9-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2672-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2672-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download