Analysis
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max time kernel
142s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
15-05-2024 22:05
Static task
static1
Behavioral task
behavioral1
Sample
5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe
Resource
win10v2004-20240426-en
General
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Target
5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe
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Size
117KB
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MD5
a8e828a136789222fda0009748ad8325
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SHA1
134aae25a885b5c92cc8003ad44c8cc82fe34507
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SHA256
5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538
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SHA512
f13865fe5bf23860e591fd42a230dc844ded17ec726459e445823437519fcb567959e067dcb6b87c8712120d79718d899f3531fec63ee94dde15c477620da9ab
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SSDEEP
1536:aJUGCqveEeXdTeG4wu6oQuwEhQQWKXJR721rSTdk/cpAKdlaKrorkgA55i:aHFveEyTAK7VKXXS1GT7AKzaKrtP55i
Malware Config
Signatures
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Detects executables containing base64 encoded User Agent 7 IoCs
resource yara_rule behavioral1/memory/2708-17-0x0000000010000000-0x0000000010036000-memory.dmp INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent behavioral1/memory/2708-19-0x0000000010000000-0x0000000010036000-memory.dmp INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent behavioral1/memory/2708-18-0x0000000010000000-0x0000000010036000-memory.dmp INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent behavioral1/memory/2708-20-0x0000000010000000-0x0000000010036000-memory.dmp INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent behavioral1/memory/2708-25-0x0000000010000000-0x0000000010036000-memory.dmp INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent behavioral1/memory/2708-26-0x0000000010000000-0x0000000010036000-memory.dmp INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent behavioral1/memory/2708-27-0x0000000010000000-0x0000000010036000-memory.dmp INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent -
Blocklisted process makes network request 10 IoCs
flow pid Process 3 2708 rundll32.exe 7 2708 rundll32.exe 8 2708 rundll32.exe 9 2708 rundll32.exe 10 2708 rundll32.exe 13 2708 rundll32.exe 14 2708 rundll32.exe 15 2708 rundll32.exe 17 2708 rundll32.exe 18 2708 rundll32.exe -
resource yara_rule behavioral1/files/0x0036000000013362-9.dat aspack_v212_v242 -
Deletes itself 1 IoCs
pid Process 1812 joibl.exe -
Executes dropped EXE 1 IoCs
pid Process 1812 joibl.exe -
Loads dropped DLL 4 IoCs
pid Process 2708 rundll32.exe 2708 rundll32.exe 2708 rundll32.exe 2708 rundll32.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\zgaby\\mczipwj.dll\",AbortProc" rundll32.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) \??\b: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\p: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\z: rundll32.exe -
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.
description ioc Process File opened for modification \??\PHYSICALDRIVE0 rundll32.exe -
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 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 1664 PING.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2708 rundll32.exe 2708 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2708 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2484 5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe 1812 joibl.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 2484 wrote to memory of 3032 2484 5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe 28 PID 2484 wrote to memory of 3032 2484 5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe 28 PID 2484 wrote to memory of 3032 2484 5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe 28 PID 2484 wrote to memory of 3032 2484 5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe 28 PID 3032 wrote to memory of 1664 3032 cmd.exe 30 PID 3032 wrote to memory of 1664 3032 cmd.exe 30 PID 3032 wrote to memory of 1664 3032 cmd.exe 30 PID 3032 wrote to memory of 1664 3032 cmd.exe 30 PID 3032 wrote to memory of 1812 3032 cmd.exe 31 PID 3032 wrote to memory of 1812 3032 cmd.exe 31 PID 3032 wrote to memory of 1812 3032 cmd.exe 31 PID 3032 wrote to memory of 1812 3032 cmd.exe 31 PID 1812 wrote to memory of 2708 1812 joibl.exe 32 PID 1812 wrote to memory of 2708 1812 joibl.exe 32 PID 1812 wrote to memory of 2708 1812 joibl.exe 32 PID 1812 wrote to memory of 2708 1812 joibl.exe 32 PID 1812 wrote to memory of 2708 1812 joibl.exe 32 PID 1812 wrote to memory of 2708 1812 joibl.exe 32 PID 1812 wrote to memory of 2708 1812 joibl.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2484 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&c:\joibl.exe "C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:3032 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- Runs ping.exe
PID:1664
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\??\c:\joibl.exec:\joibl.exe "C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1812 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\zgaby\mczipwj.dll",AbortProc c:\joibl.exe4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2708
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
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Filesize
117KB
MD55bacbd25abc7682abde7ba93c8d5fdb1
SHA1e1c5466d0ba2e35ac747e297591de73ee51c2b7b
SHA256ce62402190dd72a342781a1612bf9d15aa2547f166f054f048d08db307275288
SHA51271801d05abc4d76af0e62076da5f510c292157a4b580cf6624515c402f85ec77f349ccff1bc06bd32f0461ac242775e1dff5f792fd294fe81eb24492a5074e96
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Filesize
87KB
MD5a2c2137ff7abf6be6bcae4252c394a69
SHA107b402104df563f9486c2eef975fee70f65a5145
SHA25637ab4b7ee8f6b61c3854af4ed4676fd0d69f0260fb1296ad75e57aa08e1eeb03
SHA5125d05ed7c55bee8f41502acaea3d41fcf4421ad641d43f0b97b4cdc8fe584983da7712c561a53b708e88391df7929914746115700ae733155418693bcec6989a9