Analysis
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max time kernel
151s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
25-01-2024 10:53
Behavioral task
behavioral1
Sample
74817386836617f5db8e51800c5564eb.exe
Resource
win7-20231129-en
General
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Target
74817386836617f5db8e51800c5564eb.exe
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Size
1.4MB
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MD5
74817386836617f5db8e51800c5564eb
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SHA1
599bac4561fab987f919989d6e875a2c10afefb6
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SHA256
7efeb4811ef77fae50d31a0339adb04721eb2c02e5cbbddb561702458ae3c17c
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SHA512
dcb70f7c1b89b2d1473b1752745b565488579b5be03ea93e81f16a172769e391fdeadea3d97ab5e5810189c1968294a8700d15bdaad7377b2ef56cfffc6fd060
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SSDEEP
24576:96yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6ES:sY9UORVOM1jJHzaiape0hsABFRJch6Lm
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/2252-13-0x0000000005820000-0x000000000584C000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation test.exe -
Executes dropped EXE 1 IoCs
Processes:
test.exepid process 2252 test.exe -
Processes:
resource yara_rule behavioral2/memory/4064-0-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral2/memory/4064-12-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral2/memory/4064-29-0x0000000000400000-0x00000000006F1000-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 2252 set thread context of 1652 2252 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 2252 test.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
test.exedescription pid process Token: SeDebugPrivilege 2252 test.exe -
Suspicious use of WriteProcessMemory 19 IoCs
Processes:
74817386836617f5db8e51800c5564eb.execmd.exetest.exedescription pid process target process PID 4064 wrote to memory of 2260 4064 74817386836617f5db8e51800c5564eb.exe cmd.exe PID 4064 wrote to memory of 2260 4064 74817386836617f5db8e51800c5564eb.exe cmd.exe PID 4064 wrote to memory of 2260 4064 74817386836617f5db8e51800c5564eb.exe cmd.exe PID 2260 wrote to memory of 2252 2260 cmd.exe test.exe PID 2260 wrote to memory of 2252 2260 cmd.exe test.exe PID 2260 wrote to memory of 2252 2260 cmd.exe test.exe PID 2252 wrote to memory of 384 2252 test.exe schtasks.exe PID 2252 wrote to memory of 384 2252 test.exe schtasks.exe PID 2252 wrote to memory of 384 2252 test.exe schtasks.exe PID 2252 wrote to memory of 1652 2252 test.exe vbc.exe PID 2252 wrote to memory of 1652 2252 test.exe vbc.exe PID 2252 wrote to memory of 1652 2252 test.exe vbc.exe PID 2252 wrote to memory of 1652 2252 test.exe vbc.exe PID 2252 wrote to memory of 1652 2252 test.exe vbc.exe PID 2252 wrote to memory of 1652 2252 test.exe vbc.exe PID 2252 wrote to memory of 1652 2252 test.exe vbc.exe PID 2252 wrote to memory of 1652 2252 test.exe vbc.exe PID 2252 wrote to memory of 1652 2252 test.exe vbc.exe PID 2252 wrote to memory of 1652 2252 test.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\74817386836617f5db8e51800c5564eb.exe"C:\Users\Admin\AppData\Local\Temp\74817386836617f5db8e51800c5564eb.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\tmp30EE.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\tmp30EE.tmpFilesize
1KB
MD5859c4191858dce96857f7f2047ab98e6
SHA14ad02320552ed76b7bdf9e557f513e02287932bc
SHA25671489d4455e2859445744a0c0561fc22db662fc47b77d7349b173ebee303912c
SHA51202ff1f58648581e1a4b4972df601eaac703d96a4fd5b3aa4d373850c280407704351731e9d47ca137f77b10c1cf2b9592712b510b741b2573682ceed16e0c6b4
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memory/1652-49-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/1652-37-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/1652-35-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/1652-34-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/1652-32-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/1652-31-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/1652-30-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/1652-27-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/1652-25-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/1652-22-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2252-20-0x0000000074A90000-0x0000000075240000-memory.dmpFilesize
7.7MB
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memory/2252-8-0x00000000054E0000-0x0000000005572000-memory.dmpFilesize
584KB
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memory/2252-14-0x00000000061C0000-0x000000000625C000-memory.dmpFilesize
624KB
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memory/2252-13-0x0000000005820000-0x000000000584C000-memory.dmpFilesize
176KB
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memory/2252-5-0x0000000074A90000-0x0000000075240000-memory.dmpFilesize
7.7MB
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memory/2252-28-0x0000000074A90000-0x0000000075240000-memory.dmpFilesize
7.7MB
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memory/2252-6-0x0000000000A90000-0x0000000000AE8000-memory.dmpFilesize
352KB
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memory/2252-11-0x00000000054D0000-0x00000000054D8000-memory.dmpFilesize
32KB
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memory/2252-10-0x0000000005580000-0x000000000558A000-memory.dmpFilesize
40KB
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memory/2252-9-0x00000000056E0000-0x00000000056F0000-memory.dmpFilesize
64KB
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memory/2252-7-0x0000000005B70000-0x0000000006114000-memory.dmpFilesize
5.6MB
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memory/4064-0-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/4064-29-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/4064-12-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB