Analysis
-
max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
29/05/2024, 07:10
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe
Resource
win7-20240221-en
windows7-x64
16 signatures
150 seconds
Behavioral task
behavioral2
Sample
4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe
Resource
win10v2004-20240426-en
windows10-2004-x64
16 signatures
150 seconds
General
-
Target
4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe
-
Size
405KB
-
MD5
064c48b9363a52a63633660d07738bba
-
SHA1
80b3bb411a782e3296c1b6babf798814ee2965e0
-
SHA256
4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800
-
SHA512
ab19a10b05d7ee43cd8f02edf38644874b5358ba107e9ca77e7ed645041cff9597c35b1142ea900796f18e7a08e9673d02fd71ed609241e5e57774f710abbb5a
-
SSDEEP
6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse
Score
8/10
Malware Config
Signatures
-
Blocklisted process makes network request 10 IoCs
flow pid Process 3 2548 rundll32.exe 5 2548 rundll32.exe 8 2548 rundll32.exe 9 2548 rundll32.exe 10 2548 rundll32.exe 13 2548 rundll32.exe 14 2548 rundll32.exe 15 2548 rundll32.exe 17 2548 rundll32.exe 18 2548 rundll32.exe -
Deletes itself 1 IoCs
pid Process 2020 gesywm.exe -
Executes dropped EXE 1 IoCs
pid Process 2020 gesywm.exe -
Loads dropped DLL 6 IoCs
pid Process 2164 cmd.exe 2164 cmd.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
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\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\ydephne\\xajdcn.dll\",Verify" 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) \??\r: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\z: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\y: rundll32.exe File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\p: 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 -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 2548 rundll32.exe -
Drops file in Program Files directory 2 IoCs
description ioc Process File created \??\c:\Program Files\ydephne\xajdcn.dll gesywm.exe File opened for modification \??\c:\Program Files\ydephne gesywm.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 2096 PING.EXE -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe 2548 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2548 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2944 4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe 2020 gesywm.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 2944 wrote to memory of 2164 2944 4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe 28 PID 2944 wrote to memory of 2164 2944 4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe 28 PID 2944 wrote to memory of 2164 2944 4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe 28 PID 2944 wrote to memory of 2164 2944 4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe 28 PID 2164 wrote to memory of 2096 2164 cmd.exe 30 PID 2164 wrote to memory of 2096 2164 cmd.exe 30 PID 2164 wrote to memory of 2096 2164 cmd.exe 30 PID 2164 wrote to memory of 2096 2164 cmd.exe 30 PID 2164 wrote to memory of 2020 2164 cmd.exe 31 PID 2164 wrote to memory of 2020 2164 cmd.exe 31 PID 2164 wrote to memory of 2020 2164 cmd.exe 31 PID 2164 wrote to memory of 2020 2164 cmd.exe 31 PID 2020 wrote to memory of 2548 2020 gesywm.exe 32 PID 2020 wrote to memory of 2548 2020 gesywm.exe 32 PID 2020 wrote to memory of 2548 2020 gesywm.exe 32 PID 2020 wrote to memory of 2548 2020 gesywm.exe 32 PID 2020 wrote to memory of 2548 2020 gesywm.exe 32 PID 2020 wrote to memory of 2548 2020 gesywm.exe 32 PID 2020 wrote to memory of 2548 2020 gesywm.exe 32
Processes
-
C:\Users\Admin\AppData\Local\Temp\4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe"C:\Users\Admin\AppData\Local\Temp\4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2944 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\gesywm.exe "C:\Users\Admin\AppData\Local\Temp\4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2164 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- Runs ping.exe
PID:2096
-
-
C:\Users\Admin\AppData\Local\Temp\gesywm.exeC:\Users\Admin\AppData\Local\Temp\\gesywm.exe "C:\Users\Admin\AppData\Local\Temp\4b35db4150f1c84c4f2506845b6455eb85485009505b7155148704639a2fd800.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2020 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\Program Files\ydephne\xajdcn.dll",Verify C:\Users\Admin\AppData\Local\Temp\gesywm.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)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2548
-
-
-
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
Loading Replay Monitor...
Downloads
-
Filesize
228KB
MD56ff36f045c5ec0f30a11d8c88197029c
SHA1057a13cbcf4d259859909a38b138fa8ae35c4577
SHA256c492ac2d207cfeb1039de766289a24680773249bd08e72ee271445491702221f
SHA512685b0d3c285d3dadb74c1d251dc69c85ab183d1f28629c0ea53c5dac4da6475561604e7f9b5d2b5b32639b993538b83b287bdc76b3f242bedd057f36244e2bc8
-
Filesize
406KB
MD51f193ef9f0c94509e897efe27fef1594
SHA1fe8820852f5da7bc47ba08ccb98d6b7589250fca
SHA256231b89e2433bf85a4514bd89578cfa711ece41fe588223921c05dffab4c69c21
SHA512491d9b5c0288eb02c3fecfb4d8eb98dbbbf905906dcdd800e3e6d35578785560892558cef494f66c0cf376756cfd3c3fb8f32699e845d68b37b50e65bca0a816