Analysis
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max time kernel
155s -
max time network
289s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
23-12-2022 04:29
Static task
static1
Behavioral task
behavioral1
Sample
exploror.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
exploror.exe
Resource
win10v2004-20220812-en
General
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Target
exploror.exe
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Size
1.1MB
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MD5
be689578752179e22bf915dbcf4f7520
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SHA1
e798e703bfb90707a2872b51da73f32af566aedb
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SHA256
de8c1aa37dd523e0699a10be71185f7a8ac1cde972d04107068f49250ef7317e
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SHA512
89c95b387e566dfaf3f6a4ab60ee6e24d2574dd3802458e4d8f15e4c44136ac54c5b3a53addc1d28748656320050ee735fa2e8e5c57cdfb53fbdddc6eb586da8
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SSDEEP
12288:0MSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9VO25nQopSchf:0nsJ39LyjbJkQFMhmC+6GD9t1pSa
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/1700-63-0x0000000010000000-0x0000000010018000-memory.dmp unk_chinese_botnet -
Executes dropped EXE 4 IoCs
pid Process 1700 ._cache_exploror.exe 932 Synaptics.exe 1652 Imsossm.exe 596 Imsossm.exe -
Loads dropped DLL 4 IoCs
pid Process 1540 exploror.exe 1540 exploror.exe 1540 exploror.exe 1540 exploror.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe" exploror.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) \??\G: ._cache_exploror.exe File opened (read-only) \??\H: ._cache_exploror.exe File opened (read-only) \??\J: ._cache_exploror.exe File opened (read-only) \??\O: ._cache_exploror.exe File opened (read-only) \??\V: ._cache_exploror.exe File opened (read-only) \??\W: ._cache_exploror.exe File opened (read-only) \??\Y: ._cache_exploror.exe File opened (read-only) \??\K: ._cache_exploror.exe File opened (read-only) \??\L: ._cache_exploror.exe File opened (read-only) \??\P: ._cache_exploror.exe File opened (read-only) \??\Q: ._cache_exploror.exe File opened (read-only) \??\X: ._cache_exploror.exe File opened (read-only) \??\B: ._cache_exploror.exe File opened (read-only) \??\S: ._cache_exploror.exe File opened (read-only) \??\T: ._cache_exploror.exe File opened (read-only) \??\U: ._cache_exploror.exe File opened (read-only) \??\E: ._cache_exploror.exe File opened (read-only) \??\F: ._cache_exploror.exe File opened (read-only) \??\I: ._cache_exploror.exe File opened (read-only) \??\M: ._cache_exploror.exe File opened (read-only) \??\N: ._cache_exploror.exe File opened (read-only) \??\R: ._cache_exploror.exe File opened (read-only) \??\Z: ._cache_exploror.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 Imsossm.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat Imsossm.exe -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\Imsossm.exe ._cache_exploror.exe File opened for modification C:\Program Files (x86)\Imsossm.exe ._cache_exploror.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 ._cache_exploror.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz ._cache_exploror.exe -
Modifies data under HKEY_USERS 49 IoCs
description ioc Process Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-34-c3-27-25-22 Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-34-c3-27-25-22\WpadDecisionReason = "1" Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" Imsossm.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0042000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Imsossm.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4}\WpadNetworkName = "Network 2" Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ Imsossm.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4}\WpadNetworkName = "Network 2" Imsossm.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4}\WpadDecisionReason = "1" Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" Imsossm.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix Imsossm.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" Imsossm.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0042000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4} Imsossm.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" Imsossm.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-34-c3-27-25-22\WpadDecisionTime = 103911898f16d901 Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4}\WpadDecision = "0" Imsossm.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-34-c3-27-25-22\WpadDecisionTime = 103911898f16d901 Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-34-c3-27-25-22\WpadDecision = "0" Imsossm.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4}\5e-34-c3-27-25-22 Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" Imsossm.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-34-c3-27-25-22 Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-34-c3-27-25-22\WpadDecisionReason = "1" Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4} Imsossm.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-34-c3-27-25-22\WpadDecisionTime = d0c057918f16d901 Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4}\WpadDecision = "0" Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-34-c3-27-25-22\WpadDecision = "0" Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4}\5e-34-c3-27-25-22 Imsossm.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-34-c3-27-25-22\WpadDetectedUrl Imsossm.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Imsossm.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4}\WpadDecisionTime = 103911898f16d901 Imsossm.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000004000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0042000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Imsossm.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4}\WpadDecisionReason = "1" Imsossm.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4E566BF7-283E-4679-A5BE-D733678121C4}\WpadDecisionTime = d0c057918f16d901 Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad Imsossm.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings Imsossm.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1700 ._cache_exploror.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1540 wrote to memory of 1700 1540 exploror.exe 28 PID 1540 wrote to memory of 1700 1540 exploror.exe 28 PID 1540 wrote to memory of 1700 1540 exploror.exe 28 PID 1540 wrote to memory of 1700 1540 exploror.exe 28 PID 1540 wrote to memory of 932 1540 exploror.exe 29 PID 1540 wrote to memory of 932 1540 exploror.exe 29 PID 1540 wrote to memory of 932 1540 exploror.exe 29 PID 1540 wrote to memory of 932 1540 exploror.exe 29 PID 1652 wrote to memory of 596 1652 Imsossm.exe 33 PID 1652 wrote to memory of 596 1652 Imsossm.exe 33 PID 1652 wrote to memory of 596 1652 Imsossm.exe 33 PID 1652 wrote to memory of 596 1652 Imsossm.exe 33
Processes
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C:\Users\Admin\AppData\Local\Temp\exploror.exe"C:\Users\Admin\AppData\Local\Temp\exploror.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1540 -
C:\Users\Admin\AppData\Local\Temp\._cache_exploror.exe"C:\Users\Admin\AppData\Local\Temp\._cache_exploror.exe"2⤵
- Executes dropped EXE
- Enumerates connected drives
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1700
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C:\ProgramData\Synaptics\Synaptics.exe"C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate2⤵
- Executes dropped EXE
PID:932
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C:\Program Files (x86)\Imsossm.exe"C:\Program Files (x86)\Imsossm.exe"1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:1652 -
C:\Program Files (x86)\Imsossm.exe"C:\Program Files (x86)\Imsossm.exe" Win72⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:596
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
400KB
MD520beeb0a82adcce3a58372804acc46be
SHA1c579d9017d2c8298fe075ff5c05963901330e72a
SHA256d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e
SHA5127636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd
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Filesize
400KB
MD520beeb0a82adcce3a58372804acc46be
SHA1c579d9017d2c8298fe075ff5c05963901330e72a
SHA256d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e
SHA5127636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd
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Filesize
400KB
MD520beeb0a82adcce3a58372804acc46be
SHA1c579d9017d2c8298fe075ff5c05963901330e72a
SHA256d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e
SHA5127636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd
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Filesize
754KB
MD5310a7ff41f6633132e6c2bc25e51e567
SHA15f687df8cc3185ed68d77d0e05502c2eb308c5c8
SHA256d1425edf482717cb64db2a36357866045b0c6306d919296591ffc9bc45d680ab
SHA512ee9b3114cb37e52793bccdf20a27158f5def67ed9c7d8eb772e1deaf5d5f9a0030e847dea40bb320637f29508f1be2a49c3095460a6fd3afbc3bca196f642980
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Filesize
400KB
MD520beeb0a82adcce3a58372804acc46be
SHA1c579d9017d2c8298fe075ff5c05963901330e72a
SHA256d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e
SHA5127636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd
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Filesize
400KB
MD520beeb0a82adcce3a58372804acc46be
SHA1c579d9017d2c8298fe075ff5c05963901330e72a
SHA256d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e
SHA5127636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd
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Filesize
754KB
MD5310a7ff41f6633132e6c2bc25e51e567
SHA15f687df8cc3185ed68d77d0e05502c2eb308c5c8
SHA256d1425edf482717cb64db2a36357866045b0c6306d919296591ffc9bc45d680ab
SHA512ee9b3114cb37e52793bccdf20a27158f5def67ed9c7d8eb772e1deaf5d5f9a0030e847dea40bb320637f29508f1be2a49c3095460a6fd3afbc3bca196f642980
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Filesize
754KB
MD5310a7ff41f6633132e6c2bc25e51e567
SHA15f687df8cc3185ed68d77d0e05502c2eb308c5c8
SHA256d1425edf482717cb64db2a36357866045b0c6306d919296591ffc9bc45d680ab
SHA512ee9b3114cb37e52793bccdf20a27158f5def67ed9c7d8eb772e1deaf5d5f9a0030e847dea40bb320637f29508f1be2a49c3095460a6fd3afbc3bca196f642980
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Filesize
400KB
MD520beeb0a82adcce3a58372804acc46be
SHA1c579d9017d2c8298fe075ff5c05963901330e72a
SHA256d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e
SHA5127636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd
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Filesize
400KB
MD520beeb0a82adcce3a58372804acc46be
SHA1c579d9017d2c8298fe075ff5c05963901330e72a
SHA256d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e
SHA5127636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd