Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
16/10/2024, 00:32
Static task
static1
Behavioral task
behavioral1
Sample
3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe
Resource
win10v2004-20241007-en
General
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Target
3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe
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Size
198KB
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MD5
4d1f016b9cb0580f26bd9c3da13d8724
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SHA1
8b1b123547493295d7e3902aa763781a66dfaee1
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SHA256
3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5
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SHA512
6a1f17bf7bb20570663701ab445c0e18f6e7ae04240f9b5ac259f351ce75f6e3406d5eaad41f8632974c9b546e38123b64830f85ca20578f6ed8038008c12502
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SSDEEP
3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf
Malware Config
Signatures
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Deletes itself 1 IoCs
pid Process 2172 yiosmfik.exe -
Executes dropped EXE 2 IoCs
pid Process 2172 yiosmfik.exe 620 yjdqhbi.exe -
Loads dropped DLL 1 IoCs
pid Process 620 yjdqhbi.exe -
Reads user/profile data of web browsers 3 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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\wtfpi\\yjdqhbi.exe \"c:\\Program Files\\wtfpi\\yjdqhbi.dll\",Compliance" yjdqhbi.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) \??\r: yjdqhbi.exe File opened (read-only) \??\s: yjdqhbi.exe File opened (read-only) \??\t: yjdqhbi.exe File opened (read-only) \??\b: yjdqhbi.exe File opened (read-only) \??\g: yjdqhbi.exe File opened (read-only) \??\l: yjdqhbi.exe File opened (read-only) \??\m: yjdqhbi.exe File opened (read-only) \??\q: yjdqhbi.exe File opened (read-only) \??\v: yjdqhbi.exe File opened (read-only) \??\x: yjdqhbi.exe File opened (read-only) \??\y: yjdqhbi.exe File opened (read-only) \??\i: yjdqhbi.exe File opened (read-only) \??\j: yjdqhbi.exe File opened (read-only) \??\n: yjdqhbi.exe File opened (read-only) \??\o: yjdqhbi.exe File opened (read-only) \??\p: yjdqhbi.exe File opened (read-only) \??\w: yjdqhbi.exe File opened (read-only) \??\z: yjdqhbi.exe File opened (read-only) \??\a: yjdqhbi.exe File opened (read-only) \??\k: yjdqhbi.exe File opened (read-only) \??\u: yjdqhbi.exe File opened (read-only) \??\e: yjdqhbi.exe File opened (read-only) \??\h: yjdqhbi.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 yjdqhbi.exe -
Drops file in Program Files directory 4 IoCs
description ioc Process File created \??\c:\Program Files\wtfpi\yjdqhbi.dll yiosmfik.exe File created \??\c:\Program Files\wtfpi\yjdqhbi.exe yiosmfik.exe File opened for modification \??\c:\Program Files\wtfpi\yjdqhbi.exe yiosmfik.exe File opened for modification \??\c:\Program Files\wtfpi yiosmfik.exe -
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language yiosmfik.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language yjdqhbi.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 4580 cmd.exe 1984 PING.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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString yjdqhbi.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 yjdqhbi.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 1984 PING.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 620 yjdqhbi.exe 620 yjdqhbi.exe 620 yjdqhbi.exe 620 yjdqhbi.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 620 yjdqhbi.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4868 3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe 2172 yiosmfik.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4868 wrote to memory of 4580 4868 3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe 86 PID 4868 wrote to memory of 4580 4868 3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe 86 PID 4868 wrote to memory of 4580 4868 3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe 86 PID 4580 wrote to memory of 1984 4580 cmd.exe 89 PID 4580 wrote to memory of 1984 4580 cmd.exe 89 PID 4580 wrote to memory of 1984 4580 cmd.exe 89 PID 4580 wrote to memory of 2172 4580 cmd.exe 90 PID 4580 wrote to memory of 2172 4580 cmd.exe 90 PID 4580 wrote to memory of 2172 4580 cmd.exe 90 PID 2172 wrote to memory of 620 2172 yiosmfik.exe 91 PID 2172 wrote to memory of 620 2172 yiosmfik.exe 91 PID 2172 wrote to memory of 620 2172 yiosmfik.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe"C:\Users\Admin\AppData\Local\Temp\3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4868 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\yiosmfik.exe "C:\Users\Admin\AppData\Local\Temp\3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4580 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:1984
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C:\Users\Admin\AppData\Local\Temp\yiosmfik.exeC:\Users\Admin\AppData\Local\Temp\\yiosmfik.exe "C:\Users\Admin\AppData\Local\Temp\3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2172 -
\??\c:\Program Files\wtfpi\yjdqhbi.exe"c:\Program Files\wtfpi\yjdqhbi.exe" "c:\Program Files\wtfpi\yjdqhbi.dll",Compliance C:\Users\Admin\AppData\Local\Temp\yiosmfik.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:620
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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
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
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Downloads
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Filesize
141KB
MD53b4e2a5a5541e7bab6246df0e76178b3
SHA173f8c1bd0e353cdbcfedfa06b1027a2a5cd5497f
SHA2565aab5f19e90da1118b057ca9a72d2b8cc79b78df431bef2df641a187ea989e71
SHA512a4aa334753bbb10d0ce2e518f3437bc2347e22b7363bf70fffdafe6b325cca7a39d59f22336ec1e8d16cfa916cc35a707417ce9bbd35faa5e3ca20f6b29fcc20
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Filesize
60KB
MD5889b99c52a60dd49227c5e485a016679
SHA18fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA2566cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
SHA51208933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
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Filesize
198KB
MD5a214da0ebdbe44a7da6873adaccf96ae
SHA1473b63d116d9472622f7a084dcf779633c1ca5f9
SHA256676c5153fa9dc4edd45cb5dc8e5cafe12caf819f12071d221ba25560e2fb4908
SHA51213aa71089922443264be59b7f994755679eabe8ab8a3132f3c8ed013dbbc09f4d1b6f8618913253a6b5a1a400ae8ceea1f7df07eb0628f786814fece6da2f9d1