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Analysis
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max time kernel
152s -
max time network
40s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
03/12/2022, 20:07
Static task
static1
Behavioral task
behavioral1
Sample
abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
1 signatures
150 seconds
General
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Target
abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe
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Size
176KB
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MD5
e00c68a4474dd611fd01383066d7384f
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SHA1
1efaccd47e950855520699b84ef86d0eaa561333
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SHA256
abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a
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SHA512
824dadd71c02f227b4d7ee9ed78b2de5e1860ec782a7e59e8b86b3971eb3a15104a4e145de5fecd4df48c526dd50a6c3de7570055c34b9f268b6e3345eb01fe2
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SSDEEP
3072:wf72p1zO+daiyK8+Yb6RJ6Ea6uKnvmb7/D26CEmIOJ1va0YOlR9vqgeleYCDk0sg:E2p1d8iyK2b6RJXWKnvmb7/D26CEmIOJ
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe Set value (int) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" reunau.exe -
Executes dropped EXE 1 IoCs
pid Process 856 reunau.exe -
Loads dropped DLL 2 IoCs
pid Process 1756 abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe 1756 abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe -
Adds Run key to start application 2 TTPs 49 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /z" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /K" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /W" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /Q" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /g" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /a" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /j" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /E" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /O" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /A" abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /x" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /A" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /T" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /t" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /S" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /H" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /k" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /i" reunau.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /s" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /m" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /u" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /U" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /v" reunau.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /r" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /X" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /q" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /Y" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /d" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /C" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /b" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /F" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /h" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /R" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /N" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /l" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /P" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /e" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /o" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /G" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /p" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /L" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /c" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /I" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /V" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /f" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /B" reunau.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\reunau = "C:\\Users\\Admin\\reunau.exe /D" reunau.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1756 abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe 856 reunau.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1756 abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe 856 reunau.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1756 wrote to memory of 856 1756 abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe 28 PID 1756 wrote to memory of 856 1756 abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe 28 PID 1756 wrote to memory of 856 1756 abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe 28 PID 1756 wrote to memory of 856 1756 abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe"C:\Users\Admin\AppData\Local\Temp\abf5548bcd9f4ce7f083e879e6d145a55f368f7c78e8d76380d0f37a2b52ff3a.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1756 -
C:\Users\Admin\reunau.exe"C:\Users\Admin\reunau.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:856
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
176KB
MD5023ff4337c0a7a23600073fc8261b3e8
SHA13c042637331ec8f1457f65a752648a0c9cd5ea9a
SHA25645536c2394f8f598e582c56476cb8428afff71135b233bbc834bf4b9a77307cd
SHA512b2f4640270a67128c9793f1c5a0fe2eedfdd8e21fc37272176451c93277fed1fcc447dc8b71ada81f3fae34e6c142b4a6843e11c0b882cdade50ed5b4a1431fc
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Filesize
176KB
MD5023ff4337c0a7a23600073fc8261b3e8
SHA13c042637331ec8f1457f65a752648a0c9cd5ea9a
SHA25645536c2394f8f598e582c56476cb8428afff71135b233bbc834bf4b9a77307cd
SHA512b2f4640270a67128c9793f1c5a0fe2eedfdd8e21fc37272176451c93277fed1fcc447dc8b71ada81f3fae34e6c142b4a6843e11c0b882cdade50ed5b4a1431fc
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Filesize
176KB
MD5023ff4337c0a7a23600073fc8261b3e8
SHA13c042637331ec8f1457f65a752648a0c9cd5ea9a
SHA25645536c2394f8f598e582c56476cb8428afff71135b233bbc834bf4b9a77307cd
SHA512b2f4640270a67128c9793f1c5a0fe2eedfdd8e21fc37272176451c93277fed1fcc447dc8b71ada81f3fae34e6c142b4a6843e11c0b882cdade50ed5b4a1431fc
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Filesize
176KB
MD5023ff4337c0a7a23600073fc8261b3e8
SHA13c042637331ec8f1457f65a752648a0c9cd5ea9a
SHA25645536c2394f8f598e582c56476cb8428afff71135b233bbc834bf4b9a77307cd
SHA512b2f4640270a67128c9793f1c5a0fe2eedfdd8e21fc37272176451c93277fed1fcc447dc8b71ada81f3fae34e6c142b4a6843e11c0b882cdade50ed5b4a1431fc