Analysis
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max time kernel
149s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
03-01-2024 15:10
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 behavioral2/memory/1860-12-0x0000000005670000-0x000000000569C000-memory.dmp rezer0 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
test.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation test.exe -
Executes dropped EXE 1 IoCs
Processes:
test.exepid process 1860 test.exe -
Processes:
resource yara_rule behavioral2/memory/1332-0-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral2/memory/1332-14-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral2/memory/1332-30-0x0000000000400000-0x00000000006F1000-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 1860 set thread context of 3924 1860 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 1860 test.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
test.exedescription pid process Token: SeDebugPrivilege 1860 test.exe -
Suspicious use of WriteProcessMemory 19 IoCs
Processes:
9c1f32395776c5598e1b6ea9d971ddf2.execmd.exetest.exedescription pid process target process PID 1332 wrote to memory of 4740 1332 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 1332 wrote to memory of 4740 1332 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 1332 wrote to memory of 4740 1332 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 4740 wrote to memory of 1860 4740 cmd.exe test.exe PID 4740 wrote to memory of 1860 4740 cmd.exe test.exe PID 4740 wrote to memory of 1860 4740 cmd.exe test.exe PID 1860 wrote to memory of 1780 1860 test.exe schtasks.exe PID 1860 wrote to memory of 1780 1860 test.exe schtasks.exe PID 1860 wrote to memory of 1780 1860 test.exe schtasks.exe PID 1860 wrote to memory of 3924 1860 test.exe vbc.exe PID 1860 wrote to memory of 3924 1860 test.exe vbc.exe PID 1860 wrote to memory of 3924 1860 test.exe vbc.exe PID 1860 wrote to memory of 3924 1860 test.exe vbc.exe PID 1860 wrote to memory of 3924 1860 test.exe vbc.exe PID 1860 wrote to memory of 3924 1860 test.exe vbc.exe PID 1860 wrote to memory of 3924 1860 test.exe vbc.exe PID 1860 wrote to memory of 3924 1860 test.exe vbc.exe PID 1860 wrote to memory of 3924 1860 test.exe vbc.exe PID 1860 wrote to memory of 3924 1860 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⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\test.exetest.exe3⤵
- Checks computer location settings
- 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\tmpDD50.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\test.exeFilesize
330KB
MD5261aa73f93c90dcec0c36a51cb9b5dee
SHA1b0c41e06cd2ded81706820423db40bf8fea2c957
SHA256ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54
SHA5127b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed
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C:\Users\Admin\AppData\Local\Temp\tmpDD50.tmpFilesize
1KB
MD57e801005c70299e4a5a3a83253c1e582
SHA171e012503c55201cf1eb7bda08ab1406d7e28937
SHA2560b842ba607ed3ddc04c6bdf77fce6f804964bbf059bbd4554cc7a2498750ec3d
SHA512f68621204878403a23c08b1014539cfb8b6a45e183247acaab61829aead4699b73e308a46e2922186439e0e067f070478b9ef64001e3aec28d7442a38133a70a
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memory/1332-0-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/1332-30-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/1332-14-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/1860-10-0x00000000053B0000-0x00000000053BA000-memory.dmpFilesize
40KB
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memory/1860-29-0x0000000074FA0000-0x0000000075750000-memory.dmpFilesize
7.7MB
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memory/1860-8-0x0000000005310000-0x00000000053A2000-memory.dmpFilesize
584KB
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memory/1860-11-0x0000000005300000-0x0000000005308000-memory.dmpFilesize
32KB
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memory/1860-12-0x0000000005670000-0x000000000569C000-memory.dmpFilesize
176KB
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memory/1860-13-0x0000000005F90000-0x000000000602C000-memory.dmpFilesize
624KB
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memory/1860-7-0x00000000059E0000-0x0000000005F84000-memory.dmpFilesize
5.6MB
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memory/1860-18-0x0000000074FA0000-0x0000000075750000-memory.dmpFilesize
7.7MB
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memory/1860-21-0x00000000055B0000-0x00000000055C0000-memory.dmpFilesize
64KB
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memory/1860-6-0x0000000074FA0000-0x0000000075750000-memory.dmpFilesize
7.7MB
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memory/1860-5-0x00000000008B0000-0x0000000000908000-memory.dmpFilesize
352KB
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memory/1860-9-0x00000000055B0000-0x00000000055C0000-memory.dmpFilesize
64KB
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memory/3924-27-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/3924-28-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/3924-23-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/3924-31-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/3924-32-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/3924-33-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/3924-35-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/3924-36-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/3924-40-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/3924-44-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/3924-48-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB