Analysis
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max time kernel
147s -
max time network
135s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
07/05/2024, 03:14
Static task
static1
Behavioral task
behavioral1
Sample
589868fd7df39cf040cf813672452720_NEAS.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
589868fd7df39cf040cf813672452720_NEAS.exe
Resource
win10v2004-20240419-en
General
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Target
589868fd7df39cf040cf813672452720_NEAS.exe
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Size
256KB
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MD5
589868fd7df39cf040cf813672452720
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SHA1
b9b0390d507256476cb0b6a4d409d74f09981da0
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SHA256
87cd0c1f30ca3079911594ce5c5f5c527c3adbdcd1d8d2d7187fa1f9884f0a25
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SHA512
ae287cd5d0ba21f745df28b7446f24fc58960f9ec4809148b749b9fc81809c08214aa167f49bd58b44078b1b1ec58a0de2ea199216cfe2a818f0835c073fabab
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SSDEEP
6144:iyHJ4wTB5Ia9p+S0dSpTU+h/zquE1j57Lu6Bwc772t:ig4wTvoS05kzNEj7Lu6nu
Malware Config
Signatures
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Deletes itself 1 IoCs
pid Process 2492 jtsibgxko.exe -
Executes dropped EXE 2 IoCs
pid Process 2492 jtsibgxko.exe 2596 evskhhe.exe -
Loads dropped DLL 7 IoCs
pid Process 2268 cmd.exe 2268 cmd.exe 2492 jtsibgxko.exe 2596 evskhhe.exe 2596 evskhhe.exe 2596 evskhhe.exe 2596 evskhhe.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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\fwjdi\\evskhhe.exe \"c:\\Program Files\\fwjdi\\evskhhe.dll\",Compliance" evskhhe.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) \??\u: evskhhe.exe File opened (read-only) \??\v: evskhhe.exe File opened (read-only) \??\y: evskhhe.exe File opened (read-only) \??\a: evskhhe.exe File opened (read-only) \??\m: evskhhe.exe File opened (read-only) \??\p: evskhhe.exe File opened (read-only) \??\x: evskhhe.exe File opened (read-only) \??\z: evskhhe.exe File opened (read-only) \??\g: evskhhe.exe File opened (read-only) \??\q: evskhhe.exe File opened (read-only) \??\w: evskhhe.exe File opened (read-only) \??\s: evskhhe.exe File opened (read-only) \??\h: evskhhe.exe File opened (read-only) \??\k: evskhhe.exe File opened (read-only) \??\r: evskhhe.exe File opened (read-only) \??\j: evskhhe.exe File opened (read-only) \??\l: evskhhe.exe File opened (read-only) \??\n: evskhhe.exe File opened (read-only) \??\o: evskhhe.exe File opened (read-only) \??\t: evskhhe.exe File opened (read-only) \??\b: evskhhe.exe File opened (read-only) \??\e: evskhhe.exe File opened (read-only) \??\i: evskhhe.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 evskhhe.exe -
Drops file in Program Files directory 4 IoCs
description ioc Process File opened for modification \??\c:\Program Files\fwjdi jtsibgxko.exe File created \??\c:\Program Files\fwjdi\evskhhe.dll jtsibgxko.exe File created \??\c:\Program Files\fwjdi\evskhhe.exe jtsibgxko.exe File opened for modification \??\c:\Program Files\fwjdi\evskhhe.exe jtsibgxko.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 evskhhe.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString evskhhe.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 2456 PING.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2596 evskhhe.exe 2596 evskhhe.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2596 evskhhe.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1740 589868fd7df39cf040cf813672452720_NEAS.exe 2492 jtsibgxko.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 1740 wrote to memory of 2268 1740 589868fd7df39cf040cf813672452720_NEAS.exe 28 PID 1740 wrote to memory of 2268 1740 589868fd7df39cf040cf813672452720_NEAS.exe 28 PID 1740 wrote to memory of 2268 1740 589868fd7df39cf040cf813672452720_NEAS.exe 28 PID 1740 wrote to memory of 2268 1740 589868fd7df39cf040cf813672452720_NEAS.exe 28 PID 2268 wrote to memory of 2456 2268 cmd.exe 30 PID 2268 wrote to memory of 2456 2268 cmd.exe 30 PID 2268 wrote to memory of 2456 2268 cmd.exe 30 PID 2268 wrote to memory of 2456 2268 cmd.exe 30 PID 2268 wrote to memory of 2492 2268 cmd.exe 31 PID 2268 wrote to memory of 2492 2268 cmd.exe 31 PID 2268 wrote to memory of 2492 2268 cmd.exe 31 PID 2268 wrote to memory of 2492 2268 cmd.exe 31 PID 2492 wrote to memory of 2596 2492 jtsibgxko.exe 32 PID 2492 wrote to memory of 2596 2492 jtsibgxko.exe 32 PID 2492 wrote to memory of 2596 2492 jtsibgxko.exe 32 PID 2492 wrote to memory of 2596 2492 jtsibgxko.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\589868fd7df39cf040cf813672452720_NEAS.exe"C:\Users\Admin\AppData\Local\Temp\589868fd7df39cf040cf813672452720_NEAS.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1740 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\jtsibgxko.exe "C:\Users\Admin\AppData\Local\Temp\589868fd7df39cf040cf813672452720_NEAS.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2268 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- Runs ping.exe
PID:2456
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C:\Users\Admin\AppData\Local\Temp\jtsibgxko.exeC:\Users\Admin\AppData\Local\Temp\\jtsibgxko.exe "C:\Users\Admin\AppData\Local\Temp\589868fd7df39cf040cf813672452720_NEAS.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2492 -
\??\c:\Program Files\fwjdi\evskhhe.exe"c:\Program Files\fwjdi\evskhhe.exe" "c:\Program Files\fwjdi\evskhhe.dll",Compliance C:\Users\Admin\AppData\Local\Temp\jtsibgxko.exe4⤵
- Executes dropped EXE
- 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:2596
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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
179KB
MD592cec5cfa6c83928f3dfc489fd0a02f7
SHA1108c2cb2989673902dc3ef4e9a92da9d964bde90
SHA25610de310541c652ba838016de86080a48d7a7c49717dffa1c0d3bfc49fa3859e5
SHA512ed3486993f4d12bc8014f195b7fed2fca7ed6263a89591ff9e279717c0cfa46961a7d773f5620043c6a8a341d94817a2dbe16b10c765f485494a2f836957dc0d
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Filesize
43KB
MD551138beea3e2c21ec44d0932c71762a8
SHA18939cf35447b22dd2c6e6f443446acc1bf986d58
SHA2565ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d
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Filesize
256KB
MD563d97710da699b1bedf1b9b3d9961829
SHA1f6a9567903e11658b3f7465444627c3552b0ed29
SHA256a516478d1dec77f65cb769af9c27b13fa7e706effac88a892c2682413a1b4771
SHA512b6afb00fce7eb69fcf463691459d8fc9673a48d1759e1e29757409f34b832275b413f2011d0961f4811204654243d04cc3cf004a74dfa5e6ee941ac3f7d3ab6a