remcos | 38a4f7666465e5e33699ffdb54a78f0a56838e66353818bfda661bc578c71bee

General

Target

JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe
Size

418KB
MD5

0c1b63e81e42bba8a5c5bb2df83384ae
SHA1

89ba9052a842cb3fa7460a57154aaee14890a0dd
SHA256

38a4f7666465e5e33699ffdb54a78f0a56838e66353818bfda661bc578c71bee
SHA512

488da19ea601220446d795918587df9bacc3dea2ee78bbd3ce3f761f8abaf9c3efc44b78a61bbcc2be3df10ee8813e3efe691d4ecf43f5adc64222323463670b
SSDEEP

6144:uS5qzSNBbwvFGrfWILZT1NRr1E9/24npigxygE8loqlFQHSxk:nqzoBbwvFqJFTPr8/24rtFlFQyC

Score

10^/10

remcos viernes discovery rat

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

VIERNES

C2

viernesdnducremviernes.duckdns.org:1014

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-0F9952
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
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2312 set thread context of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
496	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2576	RegSvcs.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 496	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	30
PID 2312 wrote to memory of 496	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	30
PID 2312 wrote to memory of 496	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	30
PID 2312 wrote to memory of 496	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	30
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32
PID 2312 wrote to memory of 2576	2312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KVmufQp" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD8D2.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:496
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD8D2.tmp

Filesize
1KB

MD5
7f85ebbd88eea4ef76636359d9de2ce6

SHA1
af7db9166ff6737cc543843b5103dab6252c9a48

SHA256
2f46bfabad63558feab0675527ffe9fe74d470f6114fd653a513838c9f23a6d2

SHA512
341619a277f1f5efbc0f3f2d4186f5a108937e0ccf499f8b2f3b475eb6f38630fd1966945329a5cdee1b6ce6ab76f5262d4201424110d8f4dd538f16b66a36d0

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
74B

MD5
3d5bc470ad4a78656e615d0e77b3e992

SHA1
12d48c12b18508e365c65d0f452067365296fe46

SHA256
574ef1e7f5e40e427880e319d09b6e65c0dd3c86c67f7610bea6fcc29cffd10f

SHA512
4c20f0cddd65b5f640d4c6ebdaf1df0a81818d5ca3b3a78e124f53c6bf8eb036167271e68bd0002bea7ce95b8b0499d2bf5da035d2af7e071a93466274718e53

Download Submit
memory/2312-0-0x000000007419E000-0x000000007419F000-memory.dmp

Filesize
4KB

Download
memory/2312-1-0x0000000000E40000-0x0000000000EAE000-memory.dmp

Filesize
440KB

Download
memory/2312-2-0x0000000000450000-0x0000000000464000-memory.dmp

Filesize
80KB

Download
memory/2312-3-0x0000000074190000-0x000000007487E000-memory.dmp

Filesize
6.9MB

Download
memory/2312-4-0x000000007419E000-0x000000007419F000-memory.dmp

Filesize
4KB

Download
memory/2312-5-0x0000000074190000-0x000000007487E000-memory.dmp

Filesize
6.9MB

Download
memory/2312-6-0x0000000004F00000-0x0000000004F6E000-memory.dmp

Filesize
440KB

Download
memory/2312-7-0x0000000000680000-0x00000000006A6000-memory.dmp

Filesize
152KB

Download
memory/2312-27-0x0000000074190000-0x000000007487E000-memory.dmp

Filesize
6.9MB

Download
memory/2576-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2576-15-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-13-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-12-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-21-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-11-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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