remcos | 2c5f8cf6008b32d8845093b44852f6fbd1c2be8ec1ae5fa4e01e8d81d7e42929

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-10-2024 08:35

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General

Target

SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe
Size

1.0MB
MD5

c52789ea25c1a6e2a7ac2e853eec2771
SHA1

da9bb406349a616c982b7e6ef65b20f90fddd5db
SHA256

2c5f8cf6008b32d8845093b44852f6fbd1c2be8ec1ae5fa4e01e8d81d7e42929
SHA512

1fdf5a4316d3272308d6c18ff522d43495099ba901dd770522fccf5a65174dee8a3273c6774400139f62088045b91481809a7f60f10fc6788300386ab03e567c
SSDEEP

24576:flPGn+c9d9rwc12re8lNU2Tk68QbdmvZP1P+R+UJHrE:flun+c9KFU2/8iI1P+R+A4

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

104.250.180.178:7902

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Adobe.exe
copy_folder
Adobe
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Adobe-OTOIRK
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

Executes dropped EXE 2 IoCs

pid	Process
2928	Adobe.exe
2428	Adobe.exe

Loads dropped DLL 1 IoCs

pid	Process
2340	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1800 set thread context of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 2928 set thread context of 2428	2928	Adobe.exe	33

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 4 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	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 1800 wrote to memory of 2340	1800	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	31
PID 2340 wrote to memory of 2928	2340	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	32
PID 2340 wrote to memory of 2928	2340	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	32
PID 2340 wrote to memory of 2928	2340	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	32
PID 2340 wrote to memory of 2928	2340	SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe	32
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33
PID 2928 wrote to memory of 2428	2928	Adobe.exe	33

C:\Users\Admin\AppData\Local\Temp\SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe
"C:\Users\Admin\AppData\Local\Temp\SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe
  "C:\Users\Admin\AppData\Local\Temp\SKM_C364e24092511300346565787689900142344656767788755634232343456768953334466870.scr.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2340
- - C:\ProgramData\Adobe\Adobe.exe
    "C:\ProgramData\Adobe\Adobe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2928
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:2428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\Adobe\Adobe.exe

Filesize
1.0MB

MD5
c52789ea25c1a6e2a7ac2e853eec2771

SHA1
da9bb406349a616c982b7e6ef65b20f90fddd5db

SHA256
2c5f8cf6008b32d8845093b44852f6fbd1c2be8ec1ae5fa4e01e8d81d7e42929

SHA512
1fdf5a4316d3272308d6c18ff522d43495099ba901dd770522fccf5a65174dee8a3273c6774400139f62088045b91481809a7f60f10fc6788300386ab03e567c

Download Submit
memory/1800-0-0x000000007406E000-0x000000007406F000-memory.dmp

Filesize
4KB

Download
memory/1800-1-0x0000000000CF0000-0x0000000000DFE000-memory.dmp

Filesize
1.1MB

Download
memory/1800-2-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/1800-3-0x0000000000390000-0x00000000003A8000-memory.dmp

Filesize
96KB

Download
memory/1800-4-0x000000007406E000-0x000000007406F000-memory.dmp

Filesize
4KB

Download
memory/1800-5-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/1800-6-0x0000000005170000-0x0000000005230000-memory.dmp

Filesize
768KB

Download
memory/1800-23-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/2340-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2340-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2340-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2340-10-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2340-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2340-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2340-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2340-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2340-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2340-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2340-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-49-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2428-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-31-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/2928-30-0x0000000000F30000-0x000000000103E000-memory.dmp

Filesize
1.1MB

Download
memory/2928-55-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/2928-32-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads