Analysis
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max time kernel
151s -
max time network
133s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
12-10-2023 17:05
Static task
static1
Behavioral task
behavioral1
Sample
b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe
Resource
win10v2004-20230915-en
General
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Target
b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe
-
Size
252KB
-
MD5
aa61de6ebd02482cd16996c6f42ba8ab
-
SHA1
dea6f794cf98f0084bf14916d956818169a36b76
-
SHA256
b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034
-
SHA512
2c638be845bd245db502abee66de6eac9a96348f2e9f81e43bcf648e14caba3d2f075f4f25261ed1ae9ae542f268d36a6214bc08fec958b6eb9e6d8d42c952e3
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SSDEEP
3072:ajHIbQtMJSCTEKvAw2P7bhICAgYGlA5XFAf0jDb+:aEEtMJNEYAw2TCgvcX2MD
Malware Config
Extracted
smokeloader
up3
Extracted
smokeloader
2020
http://host-file-host6.com/
http://host-host-file8.com/
Signatures
-
SmokeLoader
Modular backdoor trojan in use since 2014.
-
Deletes itself 1 IoCs
Processes:
pid process 1272 -
Executes dropped EXE 2 IoCs
Processes:
dvucvhrdvucvhrpid process 2588 dvucvhr 3040 dvucvhr -
Loads dropped DLL 1 IoCs
Processes:
dvucvhrpid process 2588 dvucvhr -
Suspicious use of SetThreadContext 2 IoCs
Processes:
b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exedvucvhrdescription pid process target process PID 2228 set thread context of 2132 2228 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe PID 2588 set thread context of 3040 2588 dvucvhr dvucvhr -
Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exedvucvhrdescription ioc process Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI dvucvhr Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI dvucvhr Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI dvucvhr Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exepid process 2132 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe 2132 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 1272 -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
pid process 1272 -
Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exedvucvhrpid process 2132 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe 3040 dvucvhr -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
pid process 1272 1272 -
Suspicious use of SendNotifyMessage 2 IoCs
Processes:
pid process 1272 1272 -
Suspicious use of WriteProcessMemory 18 IoCs
Processes:
b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exetaskeng.exedvucvhrdescription pid process target process PID 2228 wrote to memory of 2132 2228 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe PID 2228 wrote to memory of 2132 2228 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe PID 2228 wrote to memory of 2132 2228 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe PID 2228 wrote to memory of 2132 2228 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe PID 2228 wrote to memory of 2132 2228 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe PID 2228 wrote to memory of 2132 2228 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe PID 2228 wrote to memory of 2132 2228 b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe PID 2512 wrote to memory of 2588 2512 taskeng.exe dvucvhr PID 2512 wrote to memory of 2588 2512 taskeng.exe dvucvhr PID 2512 wrote to memory of 2588 2512 taskeng.exe dvucvhr PID 2512 wrote to memory of 2588 2512 taskeng.exe dvucvhr PID 2588 wrote to memory of 3040 2588 dvucvhr dvucvhr PID 2588 wrote to memory of 3040 2588 dvucvhr dvucvhr PID 2588 wrote to memory of 3040 2588 dvucvhr dvucvhr PID 2588 wrote to memory of 3040 2588 dvucvhr dvucvhr PID 2588 wrote to memory of 3040 2588 dvucvhr dvucvhr PID 2588 wrote to memory of 3040 2588 dvucvhr dvucvhr PID 2588 wrote to memory of 3040 2588 dvucvhr dvucvhr -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe"C:\Users\Admin\AppData\Local\Temp\b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2228 -
C:\Users\Admin\AppData\Local\Temp\b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe"C:\Users\Admin\AppData\Local\Temp\b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2132
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C:\Windows\system32\taskeng.exetaskeng.exe {93D10484-F2AD-41EA-AEF0-78C95D3D35BC} S-1-5-21-686452656-3203474025-4140627569-1000:UUVOHKNL\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2512 -
C:\Users\Admin\AppData\Roaming\dvucvhrC:\Users\Admin\AppData\Roaming\dvucvhr2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2588 -
C:\Users\Admin\AppData\Roaming\dvucvhrC:\Users\Admin\AppData\Roaming\dvucvhr3⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3040
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
252KB
MD5aa61de6ebd02482cd16996c6f42ba8ab
SHA1dea6f794cf98f0084bf14916d956818169a36b76
SHA256b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034
SHA5122c638be845bd245db502abee66de6eac9a96348f2e9f81e43bcf648e14caba3d2f075f4f25261ed1ae9ae542f268d36a6214bc08fec958b6eb9e6d8d42c952e3
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Filesize
252KB
MD5aa61de6ebd02482cd16996c6f42ba8ab
SHA1dea6f794cf98f0084bf14916d956818169a36b76
SHA256b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034
SHA5122c638be845bd245db502abee66de6eac9a96348f2e9f81e43bcf648e14caba3d2f075f4f25261ed1ae9ae542f268d36a6214bc08fec958b6eb9e6d8d42c952e3
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Filesize
252KB
MD5aa61de6ebd02482cd16996c6f42ba8ab
SHA1dea6f794cf98f0084bf14916d956818169a36b76
SHA256b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034
SHA5122c638be845bd245db502abee66de6eac9a96348f2e9f81e43bcf648e14caba3d2f075f4f25261ed1ae9ae542f268d36a6214bc08fec958b6eb9e6d8d42c952e3
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Filesize
252KB
MD5aa61de6ebd02482cd16996c6f42ba8ab
SHA1dea6f794cf98f0084bf14916d956818169a36b76
SHA256b54f42b5b0d19670960eb10c6789968a30df7e8532519b32d5ef33bf155fc034
SHA5122c638be845bd245db502abee66de6eac9a96348f2e9f81e43bcf648e14caba3d2f075f4f25261ed1ae9ae542f268d36a6214bc08fec958b6eb9e6d8d42c952e3