remcos | 778ad2e8d477b0fc3ba8cbb0e3de025a6f101257c67efeb60f2bc5627996e028

Analysis

max time kernel
148s
max time network
133s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
10/01/2023, 19:05

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General

Target
2d9b808a09cc50bf8cf027b71bb20d1e.exe
Size 1.0MB
Sample230110-xrjavada21
SHA256 778ad2e8d477b0fc3ba8cbb0e3de025a6f101257c67efeb60f2bc5627996e028
MD5 2d9b808a09cc50bf8cf027b71bb20d1e
SHA1 9a167bfba1a74041f7dd0728b32205a4552e1b5c
SHA512 ae6f618c80d4558098494c787dd85617c24a58c7389d33aa00314b82c35643d3ebf819d3cad1ac055d3f5cc33ac37c9ec7e6eb34dbacd9f6855c6cd240138ccc
SSDEEP 24576:HIO/padyi/u8dCLF0XA82KwJEO7yeJqNuilb7qEZV/NWCsgfzG:Bpa/td9Xp2KwJEOwNtqEZVugf
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos mekino-remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Mekino-RemoteHost

nadiac7806.hopto.org:2397

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
los.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
keylog_path
%AppData%
mouse_option
false
mutex
Rmc-XBQXEL
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
trn
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
1656	los.exe
2024	los.exe

Loads dropped DLL 1 IoCs

pid	Process
296	cmd.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\trn = "\"C:\\Users\\Admin\\AppData\\Roaming\\los.exe\""	2d9b808a09cc50bf8cf027b71bb20d1e.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\	los.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\trn = "\"C:\\Users\\Admin\\AppData\\Roaming\\los.exe\""	los.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	los.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\trn = "\"C:\\Users\\Admin\\AppData\\Roaming\\los.exe\""	los.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\	2d9b808a09cc50bf8cf027b71bb20d1e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\trn = "\"C:\\Users\\Admin\\AppData\\Roaming\\los.exe\""	2d9b808a09cc50bf8cf027b71bb20d1e.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	2d9b808a09cc50bf8cf027b71bb20d1e.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 840 set thread context of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 1656 set thread context of 2024	1656	los.exe	36

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 3 IoCs

pid	Process
840	2d9b808a09cc50bf8cf027b71bb20d1e.exe
840	2d9b808a09cc50bf8cf027b71bb20d1e.exe
840	2d9b808a09cc50bf8cf027b71bb20d1e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2024	los.exe

Suspicious use of WriteProcessMemory 50 IoCs

description	pid	Process	procid_target
PID 840 wrote to memory of 872	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	28
PID 840 wrote to memory of 872	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	28
PID 840 wrote to memory of 872	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	28
PID 840 wrote to memory of 872	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	28
PID 840 wrote to memory of 1352	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	29
PID 840 wrote to memory of 1352	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	29
PID 840 wrote to memory of 1352	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	29
PID 840 wrote to memory of 1352	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	29
PID 840 wrote to memory of 596	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	30
PID 840 wrote to memory of 596	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	30
PID 840 wrote to memory of 596	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	30
PID 840 wrote to memory of 596	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	30
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 840 wrote to memory of 1120	840	2d9b808a09cc50bf8cf027b71bb20d1e.exe	31
PID 1120 wrote to memory of 1192	1120	2d9b808a09cc50bf8cf027b71bb20d1e.exe	32
PID 1120 wrote to memory of 1192	1120	2d9b808a09cc50bf8cf027b71bb20d1e.exe	32
PID 1120 wrote to memory of 1192	1120	2d9b808a09cc50bf8cf027b71bb20d1e.exe	32
PID 1120 wrote to memory of 1192	1120	2d9b808a09cc50bf8cf027b71bb20d1e.exe	32
PID 1192 wrote to memory of 296	1192	WScript.exe	33
PID 1192 wrote to memory of 296	1192	WScript.exe	33
PID 1192 wrote to memory of 296	1192	WScript.exe	33
PID 1192 wrote to memory of 296	1192	WScript.exe	33
PID 296 wrote to memory of 1656	296	cmd.exe	35
PID 296 wrote to memory of 1656	296	cmd.exe	35
PID 296 wrote to memory of 1656	296	cmd.exe	35
PID 296 wrote to memory of 1656	296	cmd.exe	35
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36
PID 1656 wrote to memory of 2024	1656	los.exe	36

C:\Users\Admin\AppData\Local\Temp\2d9b808a09cc50bf8cf027b71bb20d1e.exe
"C:\Users\Admin\AppData\Local\Temp\2d9b808a09cc50bf8cf027b71bb20d1e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:840
- C:\Users\Admin\AppData\Local\Temp\2d9b808a09cc50bf8cf027b71bb20d1e.exe
  "C:\Users\Admin\AppData\Local\Temp\2d9b808a09cc50bf8cf027b71bb20d1e.exe"
  2⤵
  PID:872
- C:\Users\Admin\AppData\Local\Temp\2d9b808a09cc50bf8cf027b71bb20d1e.exe
  "C:\Users\Admin\AppData\Local\Temp\2d9b808a09cc50bf8cf027b71bb20d1e.exe"
  2⤵
  PID:1352
- C:\Users\Admin\AppData\Local\Temp\2d9b808a09cc50bf8cf027b71bb20d1e.exe
  "C:\Users\Admin\AppData\Local\Temp\2d9b808a09cc50bf8cf027b71bb20d1e.exe"
  2⤵
  PID:596
- C:\Users\Admin\AppData\Local\Temp\2d9b808a09cc50bf8cf027b71bb20d1e.exe
  "C:\Users\Admin\AppData\Local\Temp\2d9b808a09cc50bf8cf027b71bb20d1e.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1120
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\qamslqgenywngvkvbkpgnbvhlba.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1192
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\los.exe"
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:296
    - - C:\Users\Admin\AppData\Roaming\los.exe
        
        C:\Users\Admin\AppData\Roaming\los.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:1656
      - C:\Users\Admin\AppData\Roaming\los.exe
        
        "C:\Users\Admin\AppData\Roaming\los.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of SetWindowsHookEx
        
        PID:2024

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

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Downloads

qamslqgenywngvkvbkpgnbvhlba.vbs

Path C:\Users\Admin\AppData\Local\Temp\qamslqgenywngvkvbkpgnbvhlba.vbs
Size 398B
SHA256 65c976c1e229ea7bc352c40862a0b71208b0b6bbe94a74d2ecb14b1fb70fcd3f
MD5 cf758ec06c989323030d19d47fc4dd16
SHA1 3e9f66e79d7c8964e0446f76b163198384bebb24
SHA512 7d4e37e7e8d73a554fff47cf1557cc6c89e816b567fac40019805ac67b11db6f2f635134a30f7dbac11b9733af2caec9e2137fa1e03d588e3adea64adbfa09ea
MD5 SHA1 SHA512

Submit Download

los.exe

Path C:\Users\Admin\AppData\Roaming\los.exe
Size 1.0MB
SHA256 778ad2e8d477b0fc3ba8cbb0e3de025a6f101257c67efeb60f2bc5627996e028
MD5 2d9b808a09cc50bf8cf027b71bb20d1e
SHA1 9a167bfba1a74041f7dd0728b32205a4552e1b5c
SHA512 ae6f618c80d4558098494c787dd85617c24a58c7389d33aa00314b82c35643d3ebf819d3cad1ac055d3f5cc33ac37c9ec7e6eb34dbacd9f6855c6cd240138ccc
SSDEEP 24576:HIO/padyi/u8dCLF0XA82KwJEO7yeJqNuilb7qEZV/NWCsgfzG:Bpa/td9Xp2KwJEOwNtqEZVugf
MD5 SHA1 SHA512 SSDEEP

Submit Download

los.exe

Path C:\Users\Admin\AppData\Roaming\los.exe
Size 1.0MB
SHA256 778ad2e8d477b0fc3ba8cbb0e3de025a6f101257c67efeb60f2bc5627996e028
MD5 2d9b808a09cc50bf8cf027b71bb20d1e
SHA1 9a167bfba1a74041f7dd0728b32205a4552e1b5c
SHA512 ae6f618c80d4558098494c787dd85617c24a58c7389d33aa00314b82c35643d3ebf819d3cad1ac055d3f5cc33ac37c9ec7e6eb34dbacd9f6855c6cd240138ccc
SSDEEP 24576:HIO/padyi/u8dCLF0XA82KwJEO7yeJqNuilb7qEZV/NWCsgfzG:Bpa/td9Xp2KwJEOwNtqEZVugf
MD5 SHA1 SHA512 SSDEEP

Submit Download

los.exe

Path C:\Users\Admin\AppData\Roaming\los.exe
Size 1.0MB
SHA256 778ad2e8d477b0fc3ba8cbb0e3de025a6f101257c67efeb60f2bc5627996e028
MD5 2d9b808a09cc50bf8cf027b71bb20d1e
SHA1 9a167bfba1a74041f7dd0728b32205a4552e1b5c
SHA512 ae6f618c80d4558098494c787dd85617c24a58c7389d33aa00314b82c35643d3ebf819d3cad1ac055d3f5cc33ac37c9ec7e6eb34dbacd9f6855c6cd240138ccc
SSDEEP 24576:HIO/padyi/u8dCLF0XA82KwJEO7yeJqNuilb7qEZV/NWCsgfzG:Bpa/td9Xp2KwJEOwNtqEZVugf
MD5 SHA1 SHA512 SSDEEP

Submit Download

los.exe

Path \Users\Admin\AppData\Roaming\los.exe
Size 1.0MB
SHA256 778ad2e8d477b0fc3ba8cbb0e3de025a6f101257c67efeb60f2bc5627996e028
MD5 2d9b808a09cc50bf8cf027b71bb20d1e
SHA1 9a167bfba1a74041f7dd0728b32205a4552e1b5c
SHA512 ae6f618c80d4558098494c787dd85617c24a58c7389d33aa00314b82c35643d3ebf819d3cad1ac055d3f5cc33ac37c9ec7e6eb34dbacd9f6855c6cd240138ccc
SSDEEP 24576:HIO/padyi/u8dCLF0XA82KwJEO7yeJqNuilb7qEZV/NWCsgfzG:Bpa/td9Xp2KwJEOwNtqEZVugf
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/840-55-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

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memory/840-56-0x00000000007A0000-0x00000000007B6000-memory.dmp

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memory/840-57-0x00000000008A0000-0x00000000008AA000-memory.dmp

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memory/840-58-0x0000000005630000-0x00000000056E2000-memory.dmp

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memory/840-59-0x00000000052D0000-0x000000000534E000-memory.dmp

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memory/840-54-0x0000000000200000-0x0000000000306000-memory.dmp

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memory/1120-63-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1120-61-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1120-72-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1120-76-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1120-70-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1120-78-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1120-68-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1120-67-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1120-66-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1120-65-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1120-60-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1656-86-0x0000000000AF0000-0x0000000000BF6000-memory.dmp

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memory/1656-88-0x0000000000510000-0x0000000000526000-memory.dmp

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memory/2024-106-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/2024-107-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/2024-108-0x0000000000400000-0x000000000047F000-memory.dmp

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