Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
05-02-2024 19:22
Behavioral task
behavioral1
Sample
92caa349914a2e9f7d694d1c2ce7d856.exe
Resource
win7-20231215-en
General
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Target
92caa349914a2e9f7d694d1c2ce7d856.exe
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Size
1.4MB
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MD5
92caa349914a2e9f7d694d1c2ce7d856
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SHA1
2541038452323a02595883eedad016b6f210ffd5
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SHA256
f2e03050cfe530e817199ed77e97b143d7979fc6072f95c61abc23177a9796e3
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SHA512
d8ee3342760ca82ef51a733eb72ac56deaf676886007b0c354ab593e4c7f5195f7fb328e56710a9a6bc901c5a0b51c1d243f2a4436dfefdd2d97c90f1b7f4e7d
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SSDEEP
24576:66yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6E7:dY9UORVOM1jJHzaiape0hsABFRJch6Lv
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/1160-9-0x0000000000B30000-0x0000000000B5C000-memory.dmp rezer0 -
Executes dropped EXE 1 IoCs
Processes:
test.exepid process 1160 test.exe -
Loads dropped DLL 1 IoCs
Processes:
cmd.exepid process 2860 cmd.exe -
Processes:
resource yara_rule behavioral1/memory/2500-0-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral1/memory/2500-10-0x0000000000400000-0x00000000006F1000-memory.dmp upx behavioral1/memory/2500-29-0x0000000000400000-0x00000000006F1000-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 1160 set thread context of 2108 1160 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 1160 test.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
test.exedescription pid process Token: SeDebugPrivilege 1160 test.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
92caa349914a2e9f7d694d1c2ce7d856.execmd.exetest.exedescription pid process target process PID 2500 wrote to memory of 2860 2500 92caa349914a2e9f7d694d1c2ce7d856.exe cmd.exe PID 2500 wrote to memory of 2860 2500 92caa349914a2e9f7d694d1c2ce7d856.exe cmd.exe PID 2500 wrote to memory of 2860 2500 92caa349914a2e9f7d694d1c2ce7d856.exe cmd.exe PID 2500 wrote to memory of 2860 2500 92caa349914a2e9f7d694d1c2ce7d856.exe cmd.exe PID 2860 wrote to memory of 1160 2860 cmd.exe test.exe PID 2860 wrote to memory of 1160 2860 cmd.exe test.exe PID 2860 wrote to memory of 1160 2860 cmd.exe test.exe PID 2860 wrote to memory of 1160 2860 cmd.exe test.exe PID 1160 wrote to memory of 2292 1160 test.exe schtasks.exe PID 1160 wrote to memory of 2292 1160 test.exe schtasks.exe PID 1160 wrote to memory of 2292 1160 test.exe schtasks.exe PID 1160 wrote to memory of 2292 1160 test.exe schtasks.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe PID 1160 wrote to memory of 2108 1160 test.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\92caa349914a2e9f7d694d1c2ce7d856.exe"C:\Users\Admin\AppData\Local\Temp\92caa349914a2e9f7d694d1c2ce7d856.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\tmp5D4C.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\tmp5D4C.tmpFilesize
1KB
MD581bd8ab36b5bada1a66e1d6aec930c19
SHA14d6a9e17edacbd058dc7780f6e90476baec51485
SHA256eebf931af3ee5475b0f680fa30650fdc7be47647e9dca05371de7cc0d142d153
SHA512ba308dc09c4ab636c7f6ff004ba18d0f448064c8220a3a8d2d595c9d893bb9f865525ae7f4b31978b699c3edbfce9439b6adfffb9a76f6f9a1279ac1e4301041
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memory/1160-6-0x0000000074760000-0x0000000074E4E000-memory.dmpFilesize
6.9MB
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memory/1160-5-0x0000000000B70000-0x0000000000BC8000-memory.dmpFilesize
352KB
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memory/1160-7-0x0000000004DF0000-0x0000000004E30000-memory.dmpFilesize
256KB
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memory/1160-8-0x0000000000340000-0x0000000000348000-memory.dmpFilesize
32KB
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memory/1160-9-0x0000000000B30000-0x0000000000B5C000-memory.dmpFilesize
176KB
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memory/1160-26-0x0000000074760000-0x0000000074E4E000-memory.dmpFilesize
6.9MB
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memory/2108-16-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-31-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-20-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-19-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-18-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-17-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-22-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmpFilesize
4KB
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memory/2108-23-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-21-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-25-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-55-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-27-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-28-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-53-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-30-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-51-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-32-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-34-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-35-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-37-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-39-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-41-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-43-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-45-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-47-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2108-49-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/2500-0-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/2500-29-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB
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memory/2500-10-0x0000000000400000-0x00000000006F1000-memory.dmpFilesize
2.9MB