remcos | 9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

Analysis

max time kernel
88s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
23-03-2023 09:06

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General

Target

NER.exe
Size

1.3MB
MD5

15932ff2fd4d25d706112766560db0be
SHA1

58f23f95ab0b98c90cc532479c584d3e920490b0
SHA256

9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785
SHA512

cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd
SSDEEP

24576:sHF0bvDMniKoyitZ2OGBhm9et9pBtV7eSgO5v0jMYuyDwVEXjByQdURaA3T:qFKAnzoyI+h4ugW/YuyDSEzORfT

Score

10^/10

remcos maly 2023-host persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Maly 2023-Host

maly22333.ddnsking.com:3091

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
cos.exe
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
mouse_option
false
mutex
Rmc-GY5GD6
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
nsa
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 6 IoCs

Processes:

cos.execos.execos.execos.execos.execos.exe

pid process

948 cos.exe
1044 cos.exe
1724 cos.exe
688 cos.exe
1784 cos.exe
604 cos.exe
Loads dropped DLL 2 IoCs

Processes:

NER.exe

pid process

472 NER.exe
472 NER.exe

pid	process
948	cos.exe
1044	cos.exe
1724	cos.exe
688	cos.exe
1784	cos.exe
604	cos.exe

pid	process
472	NER.exe
472	NER.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

NER.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\nsa = "\"C:\\Users\\Admin\\AppData\\Roaming\\cos.exe\""	NER.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows\CurrentVersion\Run\	NER.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows\CurrentVersion\Run\nsa = "\"C:\\Users\\Admin\\AppData\\Roaming\\cos.exe\""	NER.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	NER.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

NER.exe

description pid process target process

PID 1348 set thread context of 472 1348 NER.exe NER.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

NER.execos.exe

pid process

1348 NER.exe
1348 NER.exe
1348 NER.exe
948 cos.exe
948 cos.exe
948 cos.exe
948 cos.exe
948 cos.exe
948 cos.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

NER.execos.exe

description pid process

Token: SeDebugPrivilege 1348 NER.exe
Token: SeDebugPrivilege 948 cos.exe

description	pid	process	target process
PID 1348 set thread context of 472	1348	NER.exe	NER.exe

pid	process
1348	NER.exe
1348	NER.exe
1348	NER.exe
948	cos.exe
948	cos.exe
948	cos.exe
948	cos.exe
948	cos.exe
948	cos.exe

description	pid	process
Token: SeDebugPrivilege	1348	NER.exe
Token: SeDebugPrivilege	948	cos.exe

Suspicious use of WriteProcessMemory 41 IoCs

Processes:

NER.exeNER.execos.exe

description	pid	process	target process
PID 1348 wrote to memory of 768	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 768	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 768	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 768	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 1348 wrote to memory of 472	1348	NER.exe	NER.exe
PID 472 wrote to memory of 948	472	NER.exe	cos.exe
PID 472 wrote to memory of 948	472	NER.exe	cos.exe
PID 472 wrote to memory of 948	472	NER.exe	cos.exe
PID 472 wrote to memory of 948	472	NER.exe	cos.exe
PID 948 wrote to memory of 1044	948	cos.exe	cos.exe
PID 948 wrote to memory of 1044	948	cos.exe	cos.exe
PID 948 wrote to memory of 1044	948	cos.exe	cos.exe
PID 948 wrote to memory of 1044	948	cos.exe	cos.exe
PID 948 wrote to memory of 1724	948	cos.exe	cos.exe
PID 948 wrote to memory of 1724	948	cos.exe	cos.exe
PID 948 wrote to memory of 1724	948	cos.exe	cos.exe
PID 948 wrote to memory of 1724	948	cos.exe	cos.exe
PID 948 wrote to memory of 688	948	cos.exe	cos.exe
PID 948 wrote to memory of 688	948	cos.exe	cos.exe
PID 948 wrote to memory of 688	948	cos.exe	cos.exe
PID 948 wrote to memory of 688	948	cos.exe	cos.exe
PID 948 wrote to memory of 1784	948	cos.exe	cos.exe
PID 948 wrote to memory of 1784	948	cos.exe	cos.exe
PID 948 wrote to memory of 1784	948	cos.exe	cos.exe
PID 948 wrote to memory of 1784	948	cos.exe	cos.exe
PID 948 wrote to memory of 604	948	cos.exe	cos.exe
PID 948 wrote to memory of 604	948	cos.exe	cos.exe
PID 948 wrote to memory of 604	948	cos.exe	cos.exe
PID 948 wrote to memory of 604	948	cos.exe	cos.exe

C:\Users\Admin\AppData\Local\Temp\NER.exe
"C:\Users\Admin\AppData\Local\Temp\NER.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Users\Admin\AppData\Local\Temp\NER.exe
  "C:\Users\Admin\AppData\Local\Temp\NER.exe"
  2⤵
  PID:768
- C:\Users\Admin\AppData\Local\Temp\NER.exe
  "C:\Users\Admin\AppData\Local\Temp\NER.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:472
- - C:\Users\Admin\AppData\Roaming\cos.exe
    "C:\Users\Admin\AppData\Roaming\cos.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:948
  - - C:\Users\Admin\AppData\Roaming\cos.exe
      "C:\Users\Admin\AppData\Roaming\cos.exe"
      4⤵
      Executes dropped EXE
      PID:1044
  - - C:\Users\Admin\AppData\Roaming\cos.exe
      "C:\Users\Admin\AppData\Roaming\cos.exe"
      4⤵
      Executes dropped EXE
      PID:1724
  - - C:\Users\Admin\AppData\Roaming\cos.exe
      "C:\Users\Admin\AppData\Roaming\cos.exe"
      4⤵
      Executes dropped EXE
      PID:688
  - - C:\Users\Admin\AppData\Roaming\cos.exe
      "C:\Users\Admin\AppData\Roaming\cos.exe"
      4⤵
      Executes dropped EXE
      PID:1784
  - - C:\Users\Admin\AppData\Roaming\cos.exe
      "C:\Users\Admin\AppData\Roaming\cos.exe"
      4⤵
      Executes dropped EXE
      PID:604

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\cos.exe

Filesize
1.3MB

MD5
15932ff2fd4d25d706112766560db0be

SHA1
58f23f95ab0b98c90cc532479c584d3e920490b0

SHA256
9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

SHA512
cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd

Download Submit
C:\Users\Admin\AppData\Roaming\cos.exe

Filesize
1.3MB

MD5
15932ff2fd4d25d706112766560db0be

SHA1
58f23f95ab0b98c90cc532479c584d3e920490b0

SHA256
9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

SHA512
cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd

Download Submit
C:\Users\Admin\AppData\Roaming\cos.exe

Filesize
1.3MB

MD5
15932ff2fd4d25d706112766560db0be

SHA1
58f23f95ab0b98c90cc532479c584d3e920490b0

SHA256
9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

SHA512
cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd

Download Submit
C:\Users\Admin\AppData\Roaming\cos.exe

Filesize
1.3MB

MD5
15932ff2fd4d25d706112766560db0be

SHA1
58f23f95ab0b98c90cc532479c584d3e920490b0

SHA256
9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

SHA512
cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd

Download Submit
C:\Users\Admin\AppData\Roaming\cos.exe

Filesize
1.3MB

MD5
15932ff2fd4d25d706112766560db0be

SHA1
58f23f95ab0b98c90cc532479c584d3e920490b0

SHA256
9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

SHA512
cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd

Download Submit
C:\Users\Admin\AppData\Roaming\cos.exe

Filesize
1.3MB

MD5
15932ff2fd4d25d706112766560db0be

SHA1
58f23f95ab0b98c90cc532479c584d3e920490b0

SHA256
9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

SHA512
cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd

Download Submit
C:\Users\Admin\AppData\Roaming\cos.exe

Filesize
1.3MB

MD5
15932ff2fd4d25d706112766560db0be

SHA1
58f23f95ab0b98c90cc532479c584d3e920490b0

SHA256
9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

SHA512
cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd

Download Submit
C:\Users\Admin\AppData\Roaming\cos.exe

Filesize
1.3MB

MD5
15932ff2fd4d25d706112766560db0be

SHA1
58f23f95ab0b98c90cc532479c584d3e920490b0

SHA256
9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

SHA512
cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd

Download Submit
\Users\Admin\AppData\Roaming\cos.exe

Filesize
1.3MB

MD5
15932ff2fd4d25d706112766560db0be

SHA1
58f23f95ab0b98c90cc532479c584d3e920490b0

SHA256
9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

SHA512
cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd

Download Submit
\Users\Admin\AppData\Roaming\cos.exe

Filesize
1.3MB

MD5
15932ff2fd4d25d706112766560db0be

SHA1
58f23f95ab0b98c90cc532479c584d3e920490b0

SHA256
9d0382b562197eae6d94c939b20facd7614b097cb8ad53bf135818d6b854a785

SHA512
cc00da25f8b0980a5721b7d7b9c1cdfa7c203fe52a43587c3ff54e5d836fd54ec13a41aa28b4655724c56b8b20c60248ee96572a3a65c899256a7ff996942bdd

Download Submit
memory/472-60-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/472-64-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/472-66-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/472-67-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/472-68-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/472-69-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/472-71-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/472-61-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/472-80-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/472-63-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/472-62-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/472-65-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/948-85-0x0000000004AB0000-0x0000000004AF0000-memory.dmp

Filesize
256KB

Download
memory/948-83-0x0000000000340000-0x000000000048A000-memory.dmp

Filesize
1.3MB

Download
memory/948-84-0x0000000004AB0000-0x0000000004AF0000-memory.dmp

Filesize
256KB

Download
memory/1348-54-0x0000000000030000-0x000000000017A000-memory.dmp

Filesize
1.3MB

Download
memory/1348-59-0x00000000054B0000-0x0000000005530000-memory.dmp

Filesize
512KB

Download
memory/1348-58-0x0000000008570000-0x0000000008664000-memory.dmp

Filesize
976KB

Download
memory/1348-57-0x0000000004B20000-0x0000000004B60000-memory.dmp

Filesize
256KB

Download
memory/1348-56-0x00000000004F0000-0x0000000000502000-memory.dmp

Filesize
72KB

Download
memory/1348-55-0x0000000004B20000-0x0000000004B60000-memory.dmp

Filesize
256KB

Download