Analysis
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max time kernel
42s -
max time network
141s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
15-10-2022 01:47
Static task
static1
Behavioral task
behavioral1
Sample
Sr.exe
Resource
win7-20220812-en
windows7-x64
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
Sr.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
Sr.exe
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Size
1.0MB
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MD5
6f4fc9a2f722fb24d5944c3720c8e086
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SHA1
47b9064ae4db4974776bf8bd1bba8840b77124d2
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SHA256
d7420275fec10fe9b857d9a7688e50e86534f0aab151c5e766fc74833f34e478
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SHA512
6e3c4ebc7738115862e935b7cb18271969df1b2d54b49415d2500294b6391fb8f0dad0fe18bbeb69b865ecb40478ecad9c46e7b65c443e6445047164cf82f9e2
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SSDEEP
6144:3yq9ptgIsxITrY0jTxx7B+G9gZ6Ae2y8Uk:vxgIsxITrLjlx7B+BZR2
Score
10/10
Malware Config
Signatures
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Generic Chinese Botnet
A botnet originating from China which is currently unnamed publicly.
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Chinese Botnet payload 1 IoCs
resource yara_rule behavioral1/memory/1492-55-0x0000000010000000-0x0000000010018000-memory.dmp unk_chinese_botnet -
Executes dropped EXE 2 IoCs
pid Process 520 Vqcttbn.exe 1124 Vqcttbn.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\H: Sr.exe File opened (read-only) \??\I: Sr.exe File opened (read-only) \??\R: Sr.exe File opened (read-only) \??\T: Sr.exe File opened (read-only) \??\U: Sr.exe File opened (read-only) \??\V: Sr.exe File opened (read-only) \??\Y: Sr.exe File opened (read-only) \??\E: Sr.exe File opened (read-only) \??\J: Sr.exe File opened (read-only) \??\O: Sr.exe File opened (read-only) \??\W: Sr.exe File opened (read-only) \??\B: Sr.exe File opened (read-only) \??\G: Sr.exe File opened (read-only) \??\L: Sr.exe File opened (read-only) \??\N: Sr.exe File opened (read-only) \??\Q: Sr.exe File opened (read-only) \??\X: Sr.exe File opened (read-only) \??\Z: Sr.exe File opened (read-only) \??\F: Sr.exe File opened (read-only) \??\K: Sr.exe File opened (read-only) \??\M: Sr.exe File opened (read-only) \??\P: Sr.exe File opened (read-only) \??\S: Sr.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat Vqcttbn.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat Vqcttbn.exe -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\Microsoft Agacyc\Vqcttbn.exe Sr.exe File opened for modification C:\Program Files (x86)\Microsoft Agacyc\Vqcttbn.exe Sr.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 Sr.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz Sr.exe -
Modifies data under HKEY_USERS 49 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-a6-83-9c-54-3e\WpadDecision = "0" Vqcttbn.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" Vqcttbn.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9}\WpadDecisionTime = 9008e6eb48e0d801 Vqcttbn.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9}\WpadDecisionReason = "1" Vqcttbn.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-a6-83-9c-54-3e\WpadDecisionTime = 9008e6eb48e0d801 Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ Vqcttbn.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0084000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-a6-83-9c-54-3e Vqcttbn.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9}\d6-a6-83-9c-54-3e Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" Vqcttbn.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-a6-83-9c-54-3e\WpadDecision = "0" Vqcttbn.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" Vqcttbn.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000004000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0084000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9} Vqcttbn.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9}\WpadNetworkName = "Network 3" Vqcttbn.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-a6-83-9c-54-3e\WpadDecisionTime = b0a15ff548e0d801 Vqcttbn.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9}\WpadDecision = "0" Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9}\d6-a6-83-9c-54-3e Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-a6-83-9c-54-3e\WpadDecisionReason = "1" Vqcttbn.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-a6-83-9c-54-3e\WpadDetectedUrl Vqcttbn.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0084000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-a6-83-9c-54-3e Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-a6-83-9c-54-3e\WpadDecisionReason = "1" Vqcttbn.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Vqcttbn.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9} Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9}\WpadDecisionReason = "1" Vqcttbn.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-a6-83-9c-54-3e\WpadDecisionTime = 9008e6eb48e0d801 Vqcttbn.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9}\WpadDecisionTime = b0a15ff548e0d801 Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings Vqcttbn.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9}\WpadNetworkName = "Network 3" Vqcttbn.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" Vqcttbn.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B8C6C4D1-9AC0-4562-B9AB-A926925356F9}\WpadDecision = "0" Vqcttbn.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1492 Sr.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 1492 Sr.exe 520 Vqcttbn.exe 1124 Vqcttbn.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 520 wrote to memory of 1124 520 Vqcttbn.exe 30 PID 520 wrote to memory of 1124 520 Vqcttbn.exe 30 PID 520 wrote to memory of 1124 520 Vqcttbn.exe 30 PID 520 wrote to memory of 1124 520 Vqcttbn.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\Sr.exe"C:\Users\Admin\AppData\Local\Temp\Sr.exe"1⤵
- Enumerates connected drives
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1492
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C:\Program Files (x86)\Microsoft Agacyc\Vqcttbn.exe"C:\Program Files (x86)\Microsoft Agacyc\Vqcttbn.exe"1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:520 -
C:\Program Files (x86)\Microsoft Agacyc\Vqcttbn.exe"C:\Program Files (x86)\Microsoft Agacyc\Vqcttbn.exe" Win72⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:1124
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.0MB
MD56f4fc9a2f722fb24d5944c3720c8e086
SHA147b9064ae4db4974776bf8bd1bba8840b77124d2
SHA256d7420275fec10fe9b857d9a7688e50e86534f0aab151c5e766fc74833f34e478
SHA5126e3c4ebc7738115862e935b7cb18271969df1b2d54b49415d2500294b6391fb8f0dad0fe18bbeb69b865ecb40478ecad9c46e7b65c443e6445047164cf82f9e2
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Filesize
1.0MB
MD56f4fc9a2f722fb24d5944c3720c8e086
SHA147b9064ae4db4974776bf8bd1bba8840b77124d2
SHA256d7420275fec10fe9b857d9a7688e50e86534f0aab151c5e766fc74833f34e478
SHA5126e3c4ebc7738115862e935b7cb18271969df1b2d54b49415d2500294b6391fb8f0dad0fe18bbeb69b865ecb40478ecad9c46e7b65c443e6445047164cf82f9e2
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Filesize
1.0MB
MD56f4fc9a2f722fb24d5944c3720c8e086
SHA147b9064ae4db4974776bf8bd1bba8840b77124d2
SHA256d7420275fec10fe9b857d9a7688e50e86534f0aab151c5e766fc74833f34e478
SHA5126e3c4ebc7738115862e935b7cb18271969df1b2d54b49415d2500294b6391fb8f0dad0fe18bbeb69b865ecb40478ecad9c46e7b65c443e6445047164cf82f9e2