Analysis
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max time kernel
145s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
14-05-2022 14:55
Static task
static1
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20220414-en
General
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Target
tmp.exe
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Size
1.2MB
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MD5
196478f75582efb6b95a9b30a6b0afc1
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SHA1
d0aee5668cd9d8aedca5aedf1350924fb47ca939
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SHA256
1c804518ea4c220b90493ad676e48a70265a7fc20af5fb8cf75c36b425f096c8
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SHA512
4fdfaadf14d2c81bcbb373db3c4864bf415e0765c32cd3b57640e5aa5da6a83986e4f031523641d361670dbf685dd518983eae401c4a7eae503fd7a1acd89631
Malware Config
Extracted
remcos
RemoteHost
skygroupt6.zapto.org:2080
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audio_folder
MicRecords
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audio_path
%AppData%
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audio_record_time
5
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connect_delay
0
-
connect_interval
1
-
copy_file
ios.exe
- copy_folder
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delete_file
false
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hide_file
true
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hide_keylog_file
true
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install_flag
true
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install_path
%AppData%
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keylog_crypt
true
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keylog_file
logs.dat
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keylog_flag
false
- keylog_folder
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keylog_path
%AppData%
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mouse_option
false
-
mutex
Remcos-FL7CBT
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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startup_value
Re
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take_screenshot_option
false
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take_screenshot_time
5
- take_screenshot_title
Signatures
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Executes dropped EXE 1 IoCs
Processes:
ios.exepid process 3360 ios.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
tmp.exeWScript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation tmp.exe Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation WScript.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
tmp.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows\CurrentVersion\Run\ tmp.exe Set value (str) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Re = "\"C:\\Users\\Admin\\AppData\\Roaming\\ios.exe\"" tmp.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
tmp.exedescription pid process target process PID 4948 set thread context of 4476 4948 tmp.exe tmp.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 5 IoCs
Processes:
tmp.exetmp.exeios.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ tmp.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ tmp.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000_Classes\Local Settings tmp.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ ios.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ ios.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
tmp.exeios.exepid process 4948 tmp.exe 4948 tmp.exe 4948 tmp.exe 3360 ios.exe 3360 ios.exe 3360 ios.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
tmp.exeios.exedescription pid process Token: SeDebugPrivilege 4948 tmp.exe Token: SeDebugPrivilege 3360 ios.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
tmp.exetmp.exeWScript.execmd.exedescription pid process target process PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4948 wrote to memory of 4476 4948 tmp.exe tmp.exe PID 4476 wrote to memory of 4456 4476 tmp.exe WScript.exe PID 4476 wrote to memory of 4456 4476 tmp.exe WScript.exe PID 4476 wrote to memory of 4456 4476 tmp.exe WScript.exe PID 4456 wrote to memory of 4924 4456 WScript.exe cmd.exe PID 4456 wrote to memory of 4924 4456 WScript.exe cmd.exe PID 4456 wrote to memory of 4924 4456 WScript.exe cmd.exe PID 4924 wrote to memory of 3360 4924 cmd.exe ios.exe PID 4924 wrote to memory of 3360 4924 cmd.exe ios.exe PID 4924 wrote to memory of 3360 4924 cmd.exe ios.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Suspicious use of SetThreadContext
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\ios.exe"4⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\ios.exeC:\Users\Admin\AppData\Roaming\ios.exe5⤵
- Executes dropped EXE
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k appmodel -p -s camsvc1⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\install.vbsFilesize
398B
MD5bba8d44c990bd0bb75d50716749cb6c0
SHA112ba25b7f6f7b6225fe5cd1ddcba07839a90cc00
SHA256d90d18f6929159680ab3b424e1edf0e3a43f312f4291fc9f80fb78460d2e04f6
SHA512994701552561b7bf48cdb36ee1430e13a193c6283e3a7c00e096938f5efad58bb35dcc7607634973a9d42485c69ca8eaa68a7ff9093513be0b7d6c3afd942de2
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C:\Users\Admin\AppData\Roaming\ios.exeFilesize
1.2MB
MD5196478f75582efb6b95a9b30a6b0afc1
SHA1d0aee5668cd9d8aedca5aedf1350924fb47ca939
SHA2561c804518ea4c220b90493ad676e48a70265a7fc20af5fb8cf75c36b425f096c8
SHA5124fdfaadf14d2c81bcbb373db3c4864bf415e0765c32cd3b57640e5aa5da6a83986e4f031523641d361670dbf685dd518983eae401c4a7eae503fd7a1acd89631
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C:\Users\Admin\AppData\Roaming\ios.exeFilesize
1.2MB
MD5196478f75582efb6b95a9b30a6b0afc1
SHA1d0aee5668cd9d8aedca5aedf1350924fb47ca939
SHA2561c804518ea4c220b90493ad676e48a70265a7fc20af5fb8cf75c36b425f096c8
SHA5124fdfaadf14d2c81bcbb373db3c4864bf415e0765c32cd3b57640e5aa5da6a83986e4f031523641d361670dbf685dd518983eae401c4a7eae503fd7a1acd89631
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memory/3360-144-0x0000000000000000-mapping.dmp
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memory/4456-140-0x0000000000000000-mapping.dmp
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memory/4476-138-0x0000000000400000-0x000000000047B000-memory.dmpFilesize
492KB
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memory/4476-136-0x0000000000000000-mapping.dmp
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memory/4476-137-0x0000000000400000-0x000000000047B000-memory.dmpFilesize
492KB
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memory/4476-139-0x0000000000400000-0x000000000047B000-memory.dmpFilesize
492KB
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memory/4476-141-0x0000000000400000-0x000000000047B000-memory.dmpFilesize
492KB
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memory/4924-143-0x0000000000000000-mapping.dmp
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memory/4948-130-0x0000000000B80000-0x0000000000CBA000-memory.dmpFilesize
1.2MB
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memory/4948-135-0x00000000014B0000-0x0000000001516000-memory.dmpFilesize
408KB
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memory/4948-134-0x0000000001410000-0x00000000014AC000-memory.dmpFilesize
624KB
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memory/4948-133-0x0000000005A60000-0x0000000005A6A000-memory.dmpFilesize
40KB
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memory/4948-132-0x00000000058D0000-0x0000000005962000-memory.dmpFilesize
584KB
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memory/4948-131-0x0000000005CE0000-0x0000000006284000-memory.dmpFilesize
5.6MB