Analysis
-
max time kernel
141s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
-
submitted
06-09-2022 21:29
General
-
Target
62540809831ac4f0c48cb25cc71d0837.exe
-
Size
2.0MB
-
MD5
62540809831ac4f0c48cb25cc71d0837
-
SHA1
217e3ba4ddf575b5eefe85c7fe680098e10343ec
-
SHA256
c39c246ebb7f5386f1733f16f87cfff43e44b443ac3bcefab807dc2268ea6788
-
SHA512
2fc0c84a752b173797d757166a07b51322f24f260d0153fc4eebc7330b4cecddd564dc9dc0385961a2dd68e3dfdcc5aa8e112e96a1541d1162cadf6381671fdf
-
SSDEEP
49152:nnsHyjtk2MYC5GD/QwtUEB4WdXLLs8BE4c1yU:nnsmtk2aTwtXDHxE4qyU
Malware Config
Extracted
joker
http://guup.oss-cn-qingdao.aliyuncs.com
https://gutou.oss-cn-beijing.aliyuncs.com
Signatures
-
joker
Joker is an Android malware that targets billing and SMS fraud.
-
Downloads MZ/PE file
-
Executes dropped EXE 4 IoCs
-
UPX packed file 41 IoCs
Detects executables packed with UPX/modified UPX open source packer.
-
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
-
Adds Run key to start application 2 TTPs 1 IoCs
-
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
N/A. 7 IoCs
N/A.
-
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
-
Enumerates system info in registry 2 TTPs 3 IoCs
-
Modifies registry class 1 IoCs
-
Suspicious behavior: AddClipboardFormatListener 1 IoCs
-
Suspicious behavior: EnumeratesProcesses 4 IoCs
-
Suspicious use of SetWindowsHookEx 16 IoCs
-
Suspicious use of WriteProcessMemory 12 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\62540809831ac4f0c48cb25cc71d0837.exe"C:\Users\Admin\AppData\Local\Temp\62540809831ac4f0c48cb25cc71d0837.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\._cache_62540809831ac4f0c48cb25cc71d0837.exe"C:\Users\Admin\AppData\Local\Temp\._cache_62540809831ac4f0c48cb25cc71d0837.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\._cache_62540809831ac4f0c48cb25cc71d0837.exe"C:\Users\Admin\AppData\Local\Temp\._cache_62540809831ac4f0c48cb25cc71d0837.exe" ÃüÁîÆô¶¯3⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\data\Bugreport-655840.dllC:\Users\Admin\AppData\Local\Temp\data\Bugreport-655840.dll Bugreport %E7%A7%92%E8%AF%84%E7%A7%92%204⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
-
-
-
-
C:\ProgramData\Synaptics\Synaptics.exe"C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate2⤵
- Executes dropped EXE
-
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
753KB
MD5f0d6f7620693fadae8964ac7a92bb0da
SHA1863d1a064ffd90067487c426269959acf41a0559
SHA25663b777a4a82c46a04288b3e8b005bbe9f4c3f08b16b2c09fed9ec8492176db65
SHA512756678b26b38c1d4640e38f9cffef7386eb536a60b60cd19798337bb9688b2cd14bfe6192be53994cca20fe5d9439262ce425b8b907495c0069d485ab834ceda
-
Filesize
753KB
MD5f0d6f7620693fadae8964ac7a92bb0da
SHA1863d1a064ffd90067487c426269959acf41a0559
SHA25663b777a4a82c46a04288b3e8b005bbe9f4c3f08b16b2c09fed9ec8492176db65
SHA512756678b26b38c1d4640e38f9cffef7386eb536a60b60cd19798337bb9688b2cd14bfe6192be53994cca20fe5d9439262ce425b8b907495c0069d485ab834ceda
-
Filesize
1.2MB
MD51b58e13a7e221f046ce2fff64c1fd9d9
SHA1f56397b1f630ae4f9d63b6c79a20b31ba5759742
SHA2567135f99452ec0ab61bbbf1936de001a5696f0842a89fd578562fa4c96d89e27e
SHA512e37e1438b0bc3b5dec7ab8ba9faef546b2ec804117a4cadf95ceac1aa5ec7baebc5867dcb2c1a9a9f3dad3aa489ad4e03bd3fe594cc0d2b3ab4d9ad8555b9119
-
Filesize
1.2MB
MD51b58e13a7e221f046ce2fff64c1fd9d9
SHA1f56397b1f630ae4f9d63b6c79a20b31ba5759742
SHA2567135f99452ec0ab61bbbf1936de001a5696f0842a89fd578562fa4c96d89e27e
SHA512e37e1438b0bc3b5dec7ab8ba9faef546b2ec804117a4cadf95ceac1aa5ec7baebc5867dcb2c1a9a9f3dad3aa489ad4e03bd3fe594cc0d2b3ab4d9ad8555b9119
-
Filesize
3.3MB
MD565f265ac4e76c5e76dc29c6b6073dceb
SHA15f6be73e42332c0557a14607785c555809ca7b4d
SHA256e5accf6f73da12fe622465d24a6dd9a1635f2121a632b41710c0ff237a814243
SHA512c00c6254bb3c3f6cd718a023f41994721d57ce2206e6060eacf3125b74ce96d068a502f32b3cd93603e82b9b84ada6c564e2e960ebf1ebb1b213face0abde201
-
Filesize
3.3MB
MD565f265ac4e76c5e76dc29c6b6073dceb
SHA15f6be73e42332c0557a14607785c555809ca7b4d
SHA256e5accf6f73da12fe622465d24a6dd9a1635f2121a632b41710c0ff237a814243
SHA512c00c6254bb3c3f6cd718a023f41994721d57ce2206e6060eacf3125b74ce96d068a502f32b3cd93603e82b9b84ada6c564e2e960ebf1ebb1b213face0abde201
-
Filesize
17KB
MD5e566fc53051035e1e6fd0ed1823de0f9
SHA100bc96c48b98676ecd67e81a6f1d7754e4156044
SHA2568e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15
SHA512a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04
-
Filesize
164KB
MD564079dfdd179c3799bfd652ad155bd26
SHA1b02ba7e29d3a5a85a1417bcac3dc4a82c614d1fa
SHA256a21416d2bfa0476b965e98eef6551d54094cbc7bc34d43dd222434c56df1cbb2
SHA51202df3dedd6bbbf256ff98871401e217c4d234f2a30c9470d14c52f86a8cef4384e1f0a9f0389e96e5f9a22ebb7f29b05d9dfc395e3231dc153da6b77e176de29
-
Filesize
164KB
MD564079dfdd179c3799bfd652ad155bd26
SHA1b02ba7e29d3a5a85a1417bcac3dc4a82c614d1fa
SHA256a21416d2bfa0476b965e98eef6551d54094cbc7bc34d43dd222434c56df1cbb2
SHA51202df3dedd6bbbf256ff98871401e217c4d234f2a30c9470d14c52f86a8cef4384e1f0a9f0389e96e5f9a22ebb7f29b05d9dfc395e3231dc153da6b77e176de29
-
Filesize
81B
MD5964efc46dc78bc18a767bc7c8dad2361
SHA135ee870b7ce742041977024cafe08ce9e6a40815
SHA25690f3e3c0a228aa380f0fe77d41e494362a3d38168b56288f35f00c947468acc7
SHA512d80631bb8046ed53e5eac1efb678b29549c17a6d40f93c2f5b31d6af456d5f67c55c72b11b9c15197d000e6c08d7f9f6b74693f3e3306c962c5024f80016a79e
-
Filesize
29KB
MD58b3591965f623b219c0c528153746cab
SHA1020961494fa0e08779b7aacf4422269935354f7d
SHA25697ea3d99cf21123bc1aec72f9ded6a51ac659830392adfefd424eb799ab0219e
SHA5126e547197d160c9ec13cf2384add1bb6753276e3dab97d951adba9257d6bf999720635a7b9d94a5ca8b94bdda2f25f36c5938d126bc3e46a358e1fad072132351
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
224KB
-
Filesize
252KB
-
Filesize
4.0MB
-
Filesize
4.0MB
-
Filesize
252KB
-
Filesize
456KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
456KB
-
Filesize
456KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
4.0MB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
4.0MB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
252KB
-
Filesize
4.0MB
-
Filesize
252KB