1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d

Analysis

max time kernel
141s
max time network
129s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
14/01/2024, 10:31

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General

Target

1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d.exe
Size

195KB
MD5

2b4e78f6449a4697ecdf29f0ec7b9292
SHA1

e3e9930fbab9585ed2a3fd548bb35a3a03cf844c
SHA256

1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d
SHA512

242b5098c39a7c6e783e28b68e92c8b88bebf76ffc5fa2b9eadadc1129e2edc3a923de1e52e96ef1c0094b9c5f5562568eb4f0cc4e45bbbd4136ca56086d0542
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOT:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXe

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2040	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
3032	rwmhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\rwmhost.exe	1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d.exe
File opened for modification	C:\Windows\Debug\rwmhost.exe	1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rwmhost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rwmhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2912	1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2912 wrote to memory of 2040	2912	1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d.exe	29
PID 2912 wrote to memory of 2040	2912	1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d.exe	29
PID 2912 wrote to memory of 2040	2912	1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d.exe	29
PID 2912 wrote to memory of 2040	2912	1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d.exe	29

C:\Users\Admin\AppData\Local\Temp\1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d.exe
"C:\Users\Admin\AppData\Local\Temp\1bf0d42b5c8bf68e4b77c88b80bc6e5b50e31f7acef1bcff10e44bb94c64908d.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2912
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\1BF0D4~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2040

C:\Windows\Debug\rwmhost.exe
C:\Windows\Debug\rwmhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:3032

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
195KB

MD5
9874cbf9b54b40ef91ce7f657ccda460

SHA1
8e12b52aebdd075103198f5799f6e88768c31177

SHA256
5822d3e5f0ed552756db79401af75ab98cca7d01f304d7f7b84dc1968b504208

SHA512
46f2a730ee79cbe46014809ff11e91a2831255c2fa71aa03291f51f098382852212d656dc22e91c835f138118e4a47711a4d407445c9826bf20f88def67fb93b

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