Analysis
-
max time kernel
140s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20241023-en -
resource tags
arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system -
submitted
13-11-2024 02:37
Static task
static1
Behavioral task
behavioral1
Sample
c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe
Resource
win10v2004-20241007-en
General
-
Target
c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe
-
Size
50KB
-
MD5
a16d02806623ff581fe503b35fd7db32
-
SHA1
c9c6895d6497f0b07e23f2103181d912167f81dd
-
SHA256
c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9
-
SHA512
ca1d45e8015c03d77b08ff4193b916b1ffb1d2971418186cc42e6ce157eb3def75d219eca04f7206559f112893b7cae5049e6b6bcf6f39c0544d4adc963af0a4
-
SSDEEP
1536:MLdY8B4HFqn5yZHALya6idstrrrd++CCCC1:seHon5yZHDa6istrrrd++CCCC1
Malware Config
Signatures
-
Deletes itself 1 IoCs
Processes:
cmd.exepid Process 2784 cmd.exe -
Executes dropped EXE 1 IoCs
Processes:
rwmhost.exepid Process 2948 rwmhost.exe -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
-
Processes:
resource yara_rule behavioral1/memory/2244-0-0x0000000010000000-0x000000001000E000-memory.dmp upx behavioral1/memory/2244-5-0x0000000010000000-0x000000001000E000-memory.dmp upx behavioral1/memory/2948-11-0x0000000010000000-0x000000001000E000-memory.dmp upx behavioral1/memory/2948-12-0x0000000010000000-0x000000001000E000-memory.dmp upx behavioral1/memory/2948-14-0x0000000010000000-0x000000001000E000-memory.dmp upx behavioral1/memory/2948-16-0x0000000010000000-0x000000001000E000-memory.dmp upx behavioral1/memory/2948-17-0x0000000010000000-0x000000001000E000-memory.dmp upx -
Drops file in Windows directory 2 IoCs
Processes:
c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exedescription ioc Process File opened for modification C:\Windows\Debug\rwmhost.exe c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe File created C:\Windows\Debug\rwmhost.exe c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exerwmhost.execmd.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rwmhost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
rwmhost.exedescription ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rwmhost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz rwmhost.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exedescription pid Process Token: SeIncBasePriorityPrivilege 2244 c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exedescription pid Process procid_target PID 2244 wrote to memory of 2784 2244 c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe 31 PID 2244 wrote to memory of 2784 2244 c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe 31 PID 2244 wrote to memory of 2784 2244 c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe 31 PID 2244 wrote to memory of 2784 2244 c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe 31
Processes
-
C:\Users\Admin\AppData\Local\Temp\c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe"C:\Users\Admin\AppData\Local\Temp\c5f307b4f92de8f2098c8da83d61a7ec4c42a6a0aa7d22379849b109f8bf2db9.exe"1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2244 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\C5F307~1.EXE > nul2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2784
-
-
C:\Windows\Debug\rwmhost.exeC:\Windows\Debug\rwmhost.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2948
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
50KB
MD54b097b4931b4412c01671386bef10f33
SHA11353d125b4e9f788b1535b92a095ded3cb94de31
SHA256a3309e8fcb57e973456b4d173fdc2a088f9b510100a3f1697b2b74ce28ab1218
SHA51274a4e776d46e1551826873e145a7de467be7b095a79678619d0dd1f95205ce8dc56905297a75e6000dac61326643c0c96ddecc23de442a37ed7641f012cd4db9