Analysis
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max time kernel
151s -
max time network
144s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
14-02-2024 16:19
Behavioral task
behavioral1
Sample
9c1f32395776c5598e1b6ea9d971ddf2.exe
Resource
win7-20231215-en
General
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Target
9c1f32395776c5598e1b6ea9d971ddf2.exe
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Size
1.4MB
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MD5
9c1f32395776c5598e1b6ea9d971ddf2
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SHA1
c2609853716705901b3ee63e87a67c519c7f1d13
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SHA256
ec189bab39fc97ddc3282ccca5e6d4bc623b0bc82d263efb95445676d67d9b71
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SHA512
394d7faf19eab2904b96c3547cd091e05ae493930a6135fd66569f6023866b3d76f17e65f9cbe720044d127b626710c788344c8176e2d4d817ef3563b156e528
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SSDEEP
24576:y6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6ES:1Y9UORVOM1jJHzaiape0hsABFRJch6Lm
Malware Config
Extracted
remcos
2.5.0 Pro
GRACED
thankyoulord.ddns.net:5050
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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-0S5XD9
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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
wikipedia;solitaire;
Signatures
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ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
Processes:
resource yara_rule behavioral1/memory/2904-9-0x0000000000C00000-0x0000000000C2C000-memory.dmp rezer0 -
Executes dropped EXE 1 IoCs
Processes:
test.exepid process 2904 test.exe -
Loads dropped DLL 1 IoCs
Processes:
cmd.exepid process 3028 cmd.exe -
Processes:
resource yara_rule behavioral1/memory/2968-0-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral1/memory/2968-10-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral1/memory/2968-35-0x0000000000400000-0x00000000006F1000-memory.dmp upx -
Uses the VBS compiler for execution 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
test.exedescription pid process target process PID 2904 set thread context of 2700 2904 test.exe vbc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
test.exepid process 2904 test.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
test.exedescription pid process Token: SeDebugPrivilege 2904 test.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
9c1f32395776c5598e1b6ea9d971ddf2.execmd.exetest.exedescription pid process target process PID 2968 wrote to memory of 3028 2968 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 2968 wrote to memory of 3028 2968 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 2968 wrote to memory of 3028 2968 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 2968 wrote to memory of 3028 2968 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 3028 wrote to memory of 2904 3028 cmd.exe test.exe PID 3028 wrote to memory of 2904 3028 cmd.exe test.exe PID 3028 wrote to memory of 2904 3028 cmd.exe test.exe PID 3028 wrote to memory of 2904 3028 cmd.exe test.exe PID 2904 wrote to memory of 1320 2904 test.exe schtasks.exe PID 2904 wrote to memory of 1320 2904 test.exe schtasks.exe PID 2904 wrote to memory of 1320 2904 test.exe schtasks.exe PID 2904 wrote to memory of 1320 2904 test.exe schtasks.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe PID 2904 wrote to memory of 2700 2904 test.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\9c1f32395776c5598e1b6ea9d971ddf2.exe"C:\Users\Admin\AppData\Local\Temp\9c1f32395776c5598e1b6ea9d971ddf2.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c test.exe2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\test.exetest.exe3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp73C9.tmp"4⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"{path}"4⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp73C9.tmpFilesize
1KB
MD55e71b9b2e25164df20dac4cceff76168
SHA18b7bc6ed4f7bb168bb95fe1a97720fb34dbc99a2
SHA256445a86c7a8427bcbf32ea046f6088f9f31ceaac665fa4818d7bc7e57d0284287
SHA512396476eb1eb1ddeeba30584043e2b5fc04955fa78be6aebf97b13b85eb06b6c4c7c57a585d06d360c57c3d5af9253591ac720dc1f75c456af07e15226c34ae6e
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\Users\Admin\AppData\Local\Temp\test.exeFilesize
330KB
MD5261aa73f93c90dcec0c36a51cb9b5dee
SHA1b0c41e06cd2ded81706820423db40bf8fea2c957
SHA256ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54
SHA5127b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed
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memory/2700-43-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-16-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-59-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-57-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-55-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-53-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-51-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-34-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-20-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-33-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-28-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmpFilesize
4KB
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memory/2700-24-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-29-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-22-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-18-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-31-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-49-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-47-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-26-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-45-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-36-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-37-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-38-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-40-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2700-41-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2904-6-0x0000000074A40000-0x000000007512E000-memory.dmpFilesize
6.9MB
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memory/2904-9-0x0000000000C00000-0x0000000000C2C000-memory.dmpFilesize
176KB
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memory/2904-5-0x00000000011D0000-0x0000000001228000-memory.dmpFilesize
352KB
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memory/2904-32-0x0000000074A40000-0x000000007512E000-memory.dmpFilesize
6.9MB
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memory/2904-8-0x00000000004D0000-0x00000000004D8000-memory.dmpFilesize
32KB
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memory/2904-7-0x0000000000FE0000-0x0000000001020000-memory.dmpFilesize
256KB
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memory/2968-0-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/2968-35-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/2968-10-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB