fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e

Analysis

max time kernel
141s
max time network
126s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
26/03/2024, 10:58

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General

Target

fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e.exe
Size

197KB
MD5

6eb44346db0c6ab78c3a1e8f4a425718
SHA1

de38f563fa703be77f5aa20f7acb5c30b4046fe7
SHA256

fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e
SHA512

d6531961168078eb08043ee19d0fa54b7022c4461873f48f380d6d2da6d260a8fc52c61dafb70598786562a7134f17fde2620ca66ff6db0143c0e883667327c8
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCO0:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX9

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2908	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1800	rwmhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\rwmhost.exe	fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e.exe
File opened for modification	C:\Windows\Debug\rwmhost.exe	fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e.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	1656	fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2908	1656	fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e.exe	29
PID 1656 wrote to memory of 2908	1656	fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e.exe	29
PID 1656 wrote to memory of 2908	1656	fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e.exe	29
PID 1656 wrote to memory of 2908	1656	fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e.exe	29

C:\Users\Admin\AppData\Local\Temp\fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e.exe
"C:\Users\Admin\AppData\Local\Temp\fa240c13d58b68d0bd97dd63951655e442a88fbb83ef24611c1d22aabded2b2e.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\FA240C~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2908

C:\Windows\Debug\rwmhost.exe
C:\Windows\Debug\rwmhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1800

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
197KB

MD5
f762bb0622e2371997eb038679a8ef94

SHA1
42fcd03fc296b09fcbb4a6985aa778df1df4b2e5

SHA256
8c5260e9b77f7ce3b72d9e94b2edff5e5b361bfc797263ec0f36a8c198ce365d

SHA512
1c4267fbf165d28db2939840dca6fcbfc75f6bcc5910305d44f18afc3c07115cff4131eb6f4bb8b1b102892b1ed83c3330c322f0c8ed6ce42e1d8b56b879bb63

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