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

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3312 set thread context of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92

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
2164	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4012	RegSvcs.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 2164	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	90
PID 3312 wrote to memory of 2164	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	90
PID 3312 wrote to memory of 2164	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	90
PID 3312 wrote to memory of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92
PID 3312 wrote to memory of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92
PID 3312 wrote to memory of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92
PID 3312 wrote to memory of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92
PID 3312 wrote to memory of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92
PID 3312 wrote to memory of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92
PID 3312 wrote to memory of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92
PID 3312 wrote to memory of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92
PID 3312 wrote to memory of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92
PID 3312 wrote to memory of 4012	3312	JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe	92

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0c1b63e81e42bba8a5c5bb2df83384ae.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KVmufQp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1DC4.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2164
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4012

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

Query Registry

1

T1012

System Information Discovery

2

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\tmp1DC4.tmp

Filesize
1KB

MD5
d5ad1a73cd00b0bc4ef384176ea8d8c0

SHA1
7b1a4deab26433f220f16a1863b6e7d79db45b1a

SHA256
c9e20d139847ab8cedbe2748503722ae9cd5c4bbfe9aa2a8b8feb4f11d29201a

SHA512
a79f83ab5eeb92eaa857d4d3682960257af944cb36c4371424381dfe71b71d92e23569ee6247f815801ed9aaa55450317743f5c578232f138ce300cf0c4829f8

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

Filesize
74B

MD5
f9f0b4a2038e864d7644e9091b679533

SHA1
49c27b4c6102c61f1856d488a2d6507bdd531df7

SHA256
3043c753f0a6c012541cb132fc4dedbc4543a79c3cdbdd5b9d331bd702b8f7ae

SHA512
3d83655bb9681271ce7e23febb23f292584da42c144f805038b1b0be37ec3e1972dc1f3b565423787b1ce4af3fe3e64d32a639b8569e1f8632f3c99805ca9cc6

Download Submit
memory/3312-10-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/3312-11-0x0000000005B80000-0x0000000005BEE000-memory.dmp

Filesize
440KB

Download
memory/3312-4-0x0000000005740000-0x00000000057D2000-memory.dmp

Filesize
584KB

Download
memory/3312-5-0x0000000005670000-0x000000000567A000-memory.dmp

Filesize
40KB

Download
memory/3312-6-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/3312-7-0x0000000005930000-0x0000000005986000-memory.dmp

Filesize
344KB

Download
memory/3312-8-0x0000000005710000-0x0000000005724000-memory.dmp

Filesize
80KB

Download
memory/3312-9-0x000000007484E000-0x000000007484F000-memory.dmp

Filesize
4KB

Download
memory/3312-0-0x000000007484E000-0x000000007484F000-memory.dmp

Filesize
4KB

Download
memory/3312-3-0x0000000005C50000-0x00000000061F4000-memory.dmp

Filesize
5.6MB

Download
memory/3312-12-0x00000000088B0000-0x00000000088D6000-memory.dmp

Filesize
152KB

Download
memory/3312-2-0x0000000005580000-0x000000000561C000-memory.dmp

Filesize
624KB

Download
memory/3312-1-0x0000000000D00000-0x0000000000D6E000-memory.dmp

Filesize
440KB

Download
memory/3312-24-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/4012-25-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4012-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4012-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4012-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4012-27-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4012-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads