remcos | 87f384904add8574b7fb64030a7dafa8cebc825165553f01180e9dcb60bcfc69

General

Target

de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe
Size

350KB
MD5

a917ef9e23640e7454c0003b4a1c4d39
SHA1

a6f198a415a5459102afe3953a60670afc20356f
SHA256

de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c
SHA512

57665fc8a14a91fb924bf827c72b4c62847d456cf277f21760b5a3535b9172ededb1eb8d1394543dbe93b707f6d3cd86b0811bafb431b388e7541dd62e63ab12
SSDEEP

6144:QsJkBV+aEuoRPwi2AT3eV8zaTT56xuKbhGWhgjouQd:+Euolw3V8Y3ohGWqxQd

Score

10^/10

remcos april-bless discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

APRIL-BLESS

C2

shahzad73.casacam.net:2404

shahzad73.ddns.net:2404

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-B1CZ1A
screenshot_crypt
false
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
1
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

Loads dropped DLL 2 IoCs

pid	Process
1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe
1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\gnvhfp = "C:\\Users\\Admin\\AppData\\Roaming\\eyyyof\\tgyuomgefnnt.exe"	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1980 set thread context of 2080	1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe	31

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 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	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2080	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 2080	1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe	31
PID 1980 wrote to memory of 2080	1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe	31
PID 1980 wrote to memory of 2080	1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe	31
PID 1980 wrote to memory of 2080	1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe	31
PID 1980 wrote to memory of 2080	1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe	31
PID 1980 wrote to memory of 2080	1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe	31
PID 1980 wrote to memory of 2080	1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe	31
PID 1980 wrote to memory of 2080	1980	de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe	31

C:\Users\Admin\AppData\Local\Temp\de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe
"C:\Users\Admin\AppData\Local\Temp\de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Users\Admin\AppData\Local\Temp\de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe
  "C:\Users\Admin\AppData\Local\Temp\de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2080

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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\Roaming\remcos\logs.dat

Filesize
74B

MD5
47ab41eb882131596e028a6d2d38e8f4

SHA1
db9a5bb15006879fd8c2e0d744d19c9b41a2a358

SHA256
2056cbf89e9e3c570da5e0d3394438644a26754fe494b89d6929c21dc261f18a

SHA512
91568147ce043d7205d48d3cdfbb7ca1fa74e8caa02efd08c4f80770749f973523ecb2fca4b89e7e43e0d5b176cec88822fd24a8a008a47221d7ef176da5438b

Download Submit
\Users\Admin\AppData\Local\Temp\nseDE12.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
memory/1980-12-0x0000000000380000-0x0000000000383000-memory.dmp

Filesize
12KB

Download
memory/2080-30-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-21-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-22-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-25-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-26-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-28-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-16-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-32-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-34-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-37-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-38-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-40-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-43-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-45-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-47-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-50-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-52-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2080-53-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads