remcos | a766332dd4b26a623e341d03845c394209dedc3557d7bbb3c6a2edeeb9eadbeb

General

Target

e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
Size

186KB
MD5

e1719ee53cad171914f93ac0fe8b4fa2
SHA1

e54a178ba5fa279a9e3e863d227ca812212165dd
SHA256

a766332dd4b26a623e341d03845c394209dedc3557d7bbb3c6a2edeeb9eadbeb
SHA512

e8f5eb916c75e4d7d1dc2002e68196d50ca7ac725732573a321e42f454929dde355eb8b43af06b0471d8009511c9ac4101302ac246c967898c2cd4a385c46908
SSDEEP

3072:BpVHfZQmr9E38gcCgoQZZw6RyP6dpVDYokEv3bbZC1xNfLG:Bp2ACzQfw6yspFYokEv3bbqxNz

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Version

2.0.5 Pro

Botnet

RemoteHost

C2

79.172.242.28:2404

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-NPFNIR
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

Executes dropped EXE 1 IoCs

pid	Process
884	svhost.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2648 set thread context of 884	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe	91

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
File created	C:\Windows\assembly\Desktop.ini	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svhost.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
Token: 33	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 884	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe	91
PID 2648 wrote to memory of 884	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe	91
PID 2648 wrote to memory of 884	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe	91
PID 2648 wrote to memory of 884	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe	91
PID 2648 wrote to memory of 884	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe	91
PID 2648 wrote to memory of 884	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe	91
PID 2648 wrote to memory of 884	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe	91
PID 2648 wrote to memory of 884	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe	91
PID 2648 wrote to memory of 884	2648	e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e1719ee53cad171914f93ac0fe8b4fa2_JaffaCakes118.exe"
1⤵
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Users\Admin\AppData\Local\Temp\svhost.exe
  "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\svhost.exe

Filesize
1.6MB

MD5
1c9ff7df71493896054a91bee0322ebf

SHA1
38f1c85965d58b910d8e8381b6b1099d5dfcbfe4

SHA256
e8b5da3394bbdd7868122ffd88d9d06afe31bd69d656857910d2f820c32d0efa

SHA512
aa0def62b663743e6c3c022182b35cff33cb9abf08453d5098f3c5d32b2a8b0cd1cc5de64b93e39680c1d1396fef1fd50b642ca3ea4ba1f6d1078321d96916ab

Download Submit
memory/884-7-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/884-13-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/884-11-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2648-0-0x0000000074A82000-0x0000000074A83000-memory.dmp

Filesize
4KB

Download
memory/2648-1-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/2648-2-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/2648-14-0x0000000074A82000-0x0000000074A83000-memory.dmp

Filesize
4KB

Download
memory/2648-15-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/2648-16-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/2648-18-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download

Analysis

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