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 3 IoCs

pid	Process
1100	name.exe
376	name.exe
4000	name.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0004000000022f92-14.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4000 set thread context of 388	4000	name.exe	97

System Location Discovery: System Language Discovery 1 TTPs 5 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	name.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	name.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	name.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	invoice-QW7008660.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
388	svchost.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1100	name.exe
376	name.exe
4000	name.exe

Suspicious use of FindShellTrayWindow 8 IoCs

pid	Process
640	invoice-QW7008660.exe
640	invoice-QW7008660.exe
1100	name.exe
1100	name.exe
376	name.exe
376	name.exe
4000	name.exe
4000	name.exe

Suspicious use of SendNotifyMessage 8 IoCs

pid	Process
640	invoice-QW7008660.exe
640	invoice-QW7008660.exe
1100	name.exe
1100	name.exe
376	name.exe
376	name.exe
4000	name.exe
4000	name.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 1100	640	invoice-QW7008660.exe	89
PID 640 wrote to memory of 1100	640	invoice-QW7008660.exe	89
PID 640 wrote to memory of 1100	640	invoice-QW7008660.exe	89
PID 1100 wrote to memory of 2220	1100	name.exe	91
PID 1100 wrote to memory of 2220	1100	name.exe	91
PID 1100 wrote to memory of 2220	1100	name.exe	91
PID 1100 wrote to memory of 376	1100	name.exe	92
PID 1100 wrote to memory of 376	1100	name.exe	92
PID 1100 wrote to memory of 376	1100	name.exe	92
PID 376 wrote to memory of 2480	376	name.exe	93
PID 376 wrote to memory of 2480	376	name.exe	93
PID 376 wrote to memory of 2480	376	name.exe	93
PID 376 wrote to memory of 4000	376	name.exe	94
PID 376 wrote to memory of 4000	376	name.exe	94
PID 376 wrote to memory of 4000	376	name.exe	94
PID 4000 wrote to memory of 388	4000	name.exe	97
PID 4000 wrote to memory of 388	4000	name.exe	97
PID 4000 wrote to memory of 388	4000	name.exe	97
PID 4000 wrote to memory of 388	4000	name.exe	97

C:\Users\Admin\AppData\Local\Temp\invoice-QW7008660.exe
"C:\Users\Admin\AppData\Local\Temp\invoice-QW7008660.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:640
- C:\Users\Admin\AppData\Local\directory\name.exe
  "C:\Users\Admin\AppData\Local\Temp\invoice-QW7008660.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1100
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\invoice-QW7008660.exe"
    3⤵
    PID:2220
- - C:\Users\Admin\AppData\Local\directory\name.exe
    "C:\Users\Admin\AppData\Local\directory\name.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:376
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\directory\name.exe"
      4⤵
      PID:2480
  - - C:\Users\Admin\AppData\Local\directory\name.exe
      "C:\Users\Admin\AppData\Local\directory\name.exe"
      4⤵
      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:4000
    - - C:\Windows\SysWOW64\svchost.exe
        
        "C:\Users\Admin\AppData\Local\directory\name.exe"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: GetForegroundWindowSpam
        
        PID:388

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\autCC1A.tmp

Filesize
384KB

MD5
7d92f803c1196263066a569a440c53fc

SHA1
03124322feb322dd2149a16e2b88b2b6af482eee

SHA256
a45dd96fdd8da53a72e69726a6ebe850dca44ef621cba58613cb3d878383108a

SHA512
1b5ee66547ae2b130e9d73c6f77b32a512be667a4025c9899ca06acdb44cc950837a6859e391c22b025ba5c46dfae4fd65fa88d6a21353397988ebcd54f836af

Download Submit
C:\Users\Admin\AppData\Local\Temp\autCC2A.tmp

Filesize
42KB

MD5
c1788898bf1f2eac400caf221bedea62

SHA1
557aa2960e5d8e96b6d8385ee6595406f1845a06

SHA256
f9f2fa24ad086a259ffca794fcffe4b3c45aea6e94da4d61715cf73401d183d7

SHA512
8015b96847246fdc4c8c27b6ae89e0cafbf0e26867702d84c27d93e6f233f23521380a9440118ceb2340aa9b9562050e4c9e21dcbf4979d40e7f8053c5cc7ff7

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

Filesize
84KB

MD5
aa137d5b4ef8805e180303ff0dc919e2

SHA1
be7892a97b7e6a073ea434b592f07802efa7afa8

SHA256
6814368cc8b7c68fe4f6514ca809dada738cedff57d82170c90950b0ef5730d5

SHA512
dcbba739a6efa1a42df9596a7de014829b5a558185ae5449cd91c6e9445f03f3411dc855a6113d659d5a73d7d0cc10a90c48d6b9337ae41a5085e46cf469896c

Download Submit
C:\Users\Admin\AppData\Local\Temp\silvexes

Filesize
483KB

MD5
b27831241b28f16b35bf280906c89f6b

SHA1
ee7a38d75d11a58eea6a6c27a9aea7c3de5f52bd

SHA256
5b2bbe9b609a5d13a2f536fcad9c3aa4dfa35d1cdd3ee79cddc123de1a95f783

SHA512
e73161a99ef9a967f56d7b8257a6265bd7e8c061c06124ec2619a8e34b40c73710572f1a46bb6fe3d9b9710928bd645931b24fb381e792131ba41fc531df6d69

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

Filesize
1.3MB

MD5
d1d7a28422449d00071aee08f983ed7a

SHA1
a60732a9bf48716a7853cede3f40d07408992088

SHA256
3696fbaef6eb9a52fcad65eb7743ecb0047082d62b43ba72301d63467b7483ff

SHA512
f10f9e09aa2e0d007e655601d2d9f555cd96cbc84344a81ed832524130b360f1db3575469dad91b6a64309743c585ff5029d3b2ab89517d0defe56a74dba0909

Download Submit
memory/388-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/388-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/640-11-0x0000000001180000-0x0000000001184000-memory.dmp

Filesize
16KB

Download

Analysis

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