fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662

Analysis

max time kernel
141s
max time network
129s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
01/10/2023, 20:23

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General

Target

fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662.exe
Size

198KB
MD5

d622430b4efa96773f5bf2168ae693fc
SHA1

d4066315f93b9647603712ff0f66ac1ba6bbe961
SHA256

fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662
SHA512

705f9b718d7975f648f3591a53d512629ff440bb3b7d8a8efc2bc32e11433d2f88298cb8b58ba550d0e78cc8cdf6f5b49e99c4176fe7ed5c4b164cecc786d80f
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOZ:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX8

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2756	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
3048	rwmhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\rwmhost.exe	fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662.exe
File opened for modification	C:\Windows\Debug\rwmhost.exe	fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	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

description	pid	Process
Token: SeIncBasePriorityPrivilege	2996	fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2756	2996	fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662.exe	29
PID 2996 wrote to memory of 2756	2996	fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662.exe	29
PID 2996 wrote to memory of 2756	2996	fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662.exe	29
PID 2996 wrote to memory of 2756	2996	fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662.exe	29

C:\Users\Admin\AppData\Local\Temp\fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662.exe
"C:\Users\Admin\AppData\Local\Temp\fd7fa76b0e3dab7322298e57b51fbb8a14712604695f8b257db4f01a2fea5662.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\FD7FA7~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2756

C:\Windows\Debug\rwmhost.exe
C:\Windows\Debug\rwmhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:3048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\debug\rwmhost.exe

Filesize
198KB

MD5
23eb2d8ff3fe8b86e186cebdb3744502

SHA1
0cbd77ea0af442642f3edca488cc3e416fea1274

SHA256
5cf4f2b7ebbb9ca479cd55789f637b09da0ef8b6f09b176df17a7c2c5eac10b1

SHA512
aee89bd576307f84517fc26f959923aab195c0db9e65fd6df5d3ef492048afa9dbe1a2842ab45dd000db933ec06a0df60f352bd07e6b29979d19a66015e78dae

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