Analysis
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max time kernel
150s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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 behavioral1/memory/2784-9-0x0000000000660000-0x000000000068C000-memory.dmp rezer0 -
Executes dropped EXE 1 IoCs
Processes:
test.exepid process 2784 test.exe -
Loads dropped DLL 1 IoCs
Processes:
cmd.exepid process 2768 cmd.exe -
Processes:
resource yara_rule behavioral1/memory/2656-0-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral1/memory/2656-10-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral1/memory/2656-29-0x0000000000400000-0x00000000006F1000-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 2784 set thread context of 2160 2784 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 2784 test.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
test.exedescription pid process Token: SeDebugPrivilege 2784 test.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
9c1f32395776c5598e1b6ea9d971ddf2.execmd.exetest.exedescription pid process target process PID 2656 wrote to memory of 2768 2656 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 2656 wrote to memory of 2768 2656 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 2656 wrote to memory of 2768 2656 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 2656 wrote to memory of 2768 2656 9c1f32395776c5598e1b6ea9d971ddf2.exe cmd.exe PID 2768 wrote to memory of 2784 2768 cmd.exe test.exe PID 2768 wrote to memory of 2784 2768 cmd.exe test.exe PID 2768 wrote to memory of 2784 2768 cmd.exe test.exe PID 2768 wrote to memory of 2784 2768 cmd.exe test.exe PID 2784 wrote to memory of 2896 2784 test.exe schtasks.exe PID 2784 wrote to memory of 2896 2784 test.exe schtasks.exe PID 2784 wrote to memory of 2896 2784 test.exe schtasks.exe PID 2784 wrote to memory of 2896 2784 test.exe schtasks.exe PID 2784 wrote to memory of 2160 2784 test.exe vbc.exe PID 2784 wrote to memory of 2160 2784 test.exe vbc.exe PID 2784 wrote to memory of 2160 2784 test.exe vbc.exe PID 2784 wrote to memory of 2160 2784 test.exe vbc.exe PID 2784 wrote to memory of 2160 2784 test.exe vbc.exe PID 2784 wrote to memory of 2160 2784 test.exe vbc.exe PID 2784 wrote to memory of 2160 2784 test.exe vbc.exe PID 2784 wrote to memory of 2160 2784 test.exe vbc.exe PID 2784 wrote to memory of 2160 2784 test.exe vbc.exe PID 2784 wrote to memory of 2160 2784 test.exe vbc.exe PID 2784 wrote to memory of 2160 2784 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\tmp9869.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\tmp9869.tmpFilesize
1KB
MD5f83556433547c508e7d80587b48bf33f
SHA16ce17c6e31fbb43cd850a58945fdc4f3fa2f1a5c
SHA2567642b606889c8caff061a3df99ad4eee9aa8718805eb17a0b4a0189dd9df9142
SHA512fb7017a2459895d0140272549bc64dfd5d1b0b9a2147e52b609a7b04d941fc7cf14b46e7339191e2b64cd6378abfc87d6aa41624fece1e05e56bd39d8e7bedb8
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\Users\Admin\AppData\Local\Temp\test.exeFilesize
330KB
MD5261aa73f93c90dcec0c36a51cb9b5dee
SHA1b0c41e06cd2ded81706820423db40bf8fea2c957
SHA256ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54
SHA5127b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed
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memory/2160-25-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-49-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-51-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-47-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-45-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-43-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-27-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-17-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-20-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-22-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-19-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-24-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmpFilesize
4KB
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memory/2160-18-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-16-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-53-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-41-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-39-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-30-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-37-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-31-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-32-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-33-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2160-35-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2656-29-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/2656-10-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/2656-0-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/2784-5-0x0000000000160000-0x00000000001B8000-memory.dmpFilesize
352KB
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memory/2784-6-0x0000000074C00000-0x00000000752EE000-memory.dmpFilesize
6.9MB
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memory/2784-9-0x0000000000660000-0x000000000068C000-memory.dmpFilesize
176KB
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memory/2784-8-0x00000000003C0000-0x00000000003C8000-memory.dmpFilesize
32KB
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memory/2784-28-0x0000000074C00000-0x00000000752EE000-memory.dmpFilesize
6.9MB
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memory/2784-7-0x0000000004300000-0x0000000004340000-memory.dmpFilesize
256KB