remcos | 97763a2310ecfac75b30fe3c79a51b3e7d3eb9eb51cffbc524f999d2e998fcbb

General

Target

invoice-QW7008660.exe
Size

1.3MB
MD5

d1d7a28422449d00071aee08f983ed7a
SHA1

a60732a9bf48716a7853cede3f40d07408992088
SHA256

3696fbaef6eb9a52fcad65eb7743ecb0047082d62b43ba72301d63467b7483ff
SHA512

f10f9e09aa2e0d007e655601d2d9f555cd96cbc84344a81ed832524130b360f1db3575469dad91b6a64309743c585ff5029d3b2ab89517d0defe56a74dba0909
SSDEEP

24576:vqDEvCTbMWu7rQYlBQcBiT6rprG8aP/BiA8NUa8AtmAwRLYqan:vTvC/MTQYxsWR7aP54wR

Score

10^/10

remcos appo discovery rat

Malware Config

Extracted

Family

remcos

Botnet

APPO

C2

pronpostavka.com:2559

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
chrome-EZMR6Q
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\name.vbs	name.exe

Executes dropped EXE 1 IoCs

pid	Process
2596	name.exe

Loads dropped DLL 1 IoCs

pid	Process
1292	invoice-QW7008660.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000014bb6-13.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2596 set thread context of 2888	2596	name.exe	29

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	invoice-QW7008660.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	name.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2596	name.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1292	invoice-QW7008660.exe
1292	invoice-QW7008660.exe
2596	name.exe
2596	name.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1292	invoice-QW7008660.exe
1292	invoice-QW7008660.exe
2596	name.exe
2596	name.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1292 wrote to memory of 2596	1292	invoice-QW7008660.exe	28
PID 1292 wrote to memory of 2596	1292	invoice-QW7008660.exe	28
PID 1292 wrote to memory of 2596	1292	invoice-QW7008660.exe	28
PID 1292 wrote to memory of 2596	1292	invoice-QW7008660.exe	28
PID 2596 wrote to memory of 2888	2596	name.exe	29
PID 2596 wrote to memory of 2888	2596	name.exe	29
PID 2596 wrote to memory of 2888	2596	name.exe	29
PID 2596 wrote to memory of 2888	2596	name.exe	29
PID 2596 wrote to memory of 2888	2596	name.exe	29

C:\Users\Admin\AppData\Local\Temp\invoice-QW7008660.exe
"C:\Users\Admin\AppData\Local\Temp\invoice-QW7008660.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1292
- C:\Users\Admin\AppData\Local\directory\name.exe
  "C:\Users\Admin\AppData\Local\Temp\invoice-QW7008660.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2596
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\invoice-QW7008660.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2888

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\phagocytosed

Filesize
84KB

MD5
aa137d5b4ef8805e180303ff0dc919e2

SHA1
be7892a97b7e6a073ea434b592f07802efa7afa8

SHA256
6814368cc8b7c68fe4f6514ca809dada738cedff57d82170c90950b0ef5730d5

SHA512
dcbba739a6efa1a42df9596a7de014829b5a558185ae5449cd91c6e9445f03f3411dc855a6113d659d5a73d7d0cc10a90c48d6b9337ae41a5085e46cf469896c

Download Submit
\Users\Admin\AppData\Local\directory\name.exe

Filesize
1.3MB

MD5
d1d7a28422449d00071aee08f983ed7a

SHA1
a60732a9bf48716a7853cede3f40d07408992088

SHA256
3696fbaef6eb9a52fcad65eb7743ecb0047082d62b43ba72301d63467b7483ff

SHA512
f10f9e09aa2e0d007e655601d2d9f555cd96cbc84344a81ed832524130b360f1db3575469dad91b6a64309743c585ff5029d3b2ab89517d0defe56a74dba0909

Download Submit
memory/1292-11-0x00000000001E0000-0x00000000001E4000-memory.dmp

Filesize
16KB

Download
memory/2888-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2888-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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