Analysis
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max time kernel
149s -
max time network
142s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
15-09-2021 07:10
Static task
static1
Behavioral task
behavioral1
Sample
a6fc0d48408d69e288d47a21659176f1.exe
Resource
win7-en
Behavioral task
behavioral2
Sample
a6fc0d48408d69e288d47a21659176f1.exe
Resource
win10v20210408
General
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Target
a6fc0d48408d69e288d47a21659176f1.exe
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Size
841KB
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MD5
a6fc0d48408d69e288d47a21659176f1
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SHA1
dec8694a310328e062aeec260b84792f0ac11250
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SHA256
4e86e4ab9e20e94144838555a5e28d455f8998142d53a46f659cc9d07b2f458d
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SHA512
903a2f49b5bc8371ff4cd8bd10b9c49f1258293ca55c450aca5661b6c93d44ca811eb716afb14df620d40c1daae80f115dc5a31c494b7d14165d77c526a9a980
Malware Config
Extracted
remcos
3.2.0 Pro
yankst
194.127.179.121:5002
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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
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
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install_path
%AppData%
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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keylog_path
%AppData%
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mouse_option
false
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mutex
Remcos-75950U
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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
Remcos
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take_screenshot_option
false
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take_screenshot_time
5
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take_screenshot_title
notepad;solitaire;
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
a6fc0d48408d69e288d47a21659176f1.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Elxcqdj = "C:\\Users\\Public\\Libraries\\jdqcxlE.url" a6fc0d48408d69e288d47a21659176f1.exe -
Modifies registry key 1 TTPs 3 IoCs
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Suspicious use of WriteProcessMemory 36 IoCs
Processes:
a6fc0d48408d69e288d47a21659176f1.execmd.execmd.execmd.exedescription pid process target process PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1216 604 a6fc0d48408d69e288d47a21659176f1.exe mobsync.exe PID 604 wrote to memory of 1344 604 a6fc0d48408d69e288d47a21659176f1.exe cmd.exe PID 604 wrote to memory of 1344 604 a6fc0d48408d69e288d47a21659176f1.exe cmd.exe PID 604 wrote to memory of 1344 604 a6fc0d48408d69e288d47a21659176f1.exe cmd.exe PID 1344 wrote to memory of 1648 1344 cmd.exe cmd.exe PID 1344 wrote to memory of 1648 1344 cmd.exe cmd.exe PID 1344 wrote to memory of 1648 1344 cmd.exe cmd.exe PID 1648 wrote to memory of 2024 1648 cmd.exe reg.exe PID 1648 wrote to memory of 2024 1648 cmd.exe reg.exe PID 1648 wrote to memory of 2024 1648 cmd.exe reg.exe PID 1648 wrote to memory of 2180 1648 cmd.exe reg.exe PID 1648 wrote to memory of 2180 1648 cmd.exe reg.exe PID 1648 wrote to memory of 2180 1648 cmd.exe reg.exe PID 1648 wrote to memory of 2408 1648 cmd.exe schtasks.exe PID 1648 wrote to memory of 2408 1648 cmd.exe schtasks.exe PID 1648 wrote to memory of 2408 1648 cmd.exe schtasks.exe PID 604 wrote to memory of 2648 604 a6fc0d48408d69e288d47a21659176f1.exe cmd.exe PID 604 wrote to memory of 2648 604 a6fc0d48408d69e288d47a21659176f1.exe cmd.exe PID 604 wrote to memory of 2648 604 a6fc0d48408d69e288d47a21659176f1.exe cmd.exe PID 2648 wrote to memory of 3564 2648 cmd.exe reg.exe PID 2648 wrote to memory of 3564 2648 cmd.exe reg.exe PID 2648 wrote to memory of 3564 2648 cmd.exe reg.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a6fc0d48408d69e288d47a21659176f1.exe"C:\Users\Admin\AppData\Local\Temp\a6fc0d48408d69e288d47a21659176f1.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\mobsync.exeC:\Windows\System32\mobsync.exe2⤵
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Public\Trast.bat" "2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /K C:\Users\Public\UKO.bat3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg delete hkcu\Environment /v windir /f4⤵
- Modifies registry key
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C:\Windows\SysWOW64\reg.exereg add hkcu\Environment /v windir /d "cmd /c start /min C:\Users\Public\KDECO.bat reg delete hkcu\Environment /v windir /f && REM "4⤵
- Modifies registry key
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C:\Windows\SysWOW64\schtasks.exeschtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I4⤵
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Public\nest.bat" "2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg delete hkcu\Environment /v windir /f3⤵
- Modifies registry key
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Public\Trast.batMD5
4068c9f69fcd8a171c67f81d4a952a54
SHA14d2536a8c28cdcc17465e20d6693fb9e8e713b36
SHA25624222300c78180b50ed1f8361ba63cb27316ec994c1c9079708a51b4a1a9d810
SHA512a64f9319acc51fffd0491c74dcd9c9084c2783b82f95727e4bfe387a8528c6dcf68f11418e88f1e133d115daf907549c86dd7ad866b2a7938add5225fbb2811d
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C:\Users\Public\UKO.batMD5
eaf8d967454c3bbddbf2e05a421411f8
SHA16170880409b24de75c2dc3d56a506fbff7f6622c
SHA256f35f2658455a2e40f151549a7d6465a836c33fa9109e67623916f889849eac56
SHA512fe5be5c673e99f70c93019d01abb0a29dd2ecf25b2d895190ff551f020c28e7d8f99f65007f440f0f76c5bcac343b2a179a94d190c938ea3b9e1197890a412e9
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C:\Users\Public\nest.batMD5
8ada51400b7915de2124baaf75e3414c
SHA11a7b9db12184ab7fd7fce1c383f9670a00adb081
SHA25645aa3957c29865260a78f03eef18ae9aebdbf7bea751ecc88be4a799f2bb46c7
SHA5129afc138157a4565294ca49942579cdb6f5d8084e56f9354738de62b585f4c0fa3e7f2cbc9541827f2084e3ff36c46eed29b46f5dd2444062ffcd05c599992e68
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memory/604-117-0x0000000000670000-0x000000000068B000-memory.dmpFilesize
108KB
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memory/604-114-0x00000000004E0000-0x000000000058E000-memory.dmpFilesize
696KB
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memory/1216-130-0x0000000010590000-0x000000001060C000-memory.dmpFilesize
496KB
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memory/1216-128-0x0000000003100000-0x0000000003101000-memory.dmpFilesize
4KB
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memory/1216-127-0x0000000003040000-0x0000000003041000-memory.dmpFilesize
4KB
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memory/1216-129-0x00000000030A0000-0x00000000030A1000-memory.dmpFilesize
4KB
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memory/1216-131-0x0000000000400000-0x0000000000479000-memory.dmpFilesize
484KB
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memory/1216-119-0x0000000000000000-mapping.dmp
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memory/1344-120-0x0000000000000000-mapping.dmp
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memory/1648-122-0x0000000000000000-mapping.dmp
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memory/2024-124-0x0000000000000000-mapping.dmp
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memory/2180-125-0x0000000000000000-mapping.dmp
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memory/2408-126-0x0000000000000000-mapping.dmp
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memory/2648-132-0x0000000000000000-mapping.dmp
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memory/3564-134-0x0000000000000000-mapping.dmp