feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2

Analysis

max time kernel
178s
max time network
165s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
11/10/2023, 05:29

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General

Target

feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2.exe
Size

198KB
MD5

7beaab17b4f5b6061fe83e18e8855b32
SHA1

1c2e9f91308153820faf7414aed993819b603297
SHA256

feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2
SHA512

8549695c25884001fa1497cee06e87370cc74f4177d939f1934f72ef8e24de3e47e5efe922c8386310db575ab3250b80ab67eb8c0048b269107800ebe537af31
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOj:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXa

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
340	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1468	zskhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\zskhost.exe	feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2.exe
File opened for modification	C:\Windows\Debug\zskhost.exe	feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2.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	zskhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	zskhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	308	feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 308 wrote to memory of 340	308	feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2.exe	28
PID 308 wrote to memory of 340	308	feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2.exe	28
PID 308 wrote to memory of 340	308	feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2.exe	28
PID 308 wrote to memory of 340	308	feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2.exe	28

C:\Users\Admin\AppData\Local\Temp\feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2.exe
"C:\Users\Admin\AppData\Local\Temp\feca5f0c1aa8bcc903c6c7410181992dc727a064adac6ea442278ba5b75a63c2.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\FECA5F~1.EXE > nul
  2⤵
  - Deletes itself
  PID:340

C:\Windows\Debug\zskhost.exe
C:\Windows\Debug\zskhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1468

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\zskhost.exe

Filesize
198KB

MD5
3cc3fd3fcdfa9dbc09fd48b7460d0cca

SHA1
b4c6d7c12b3895fbc11639cdef68fb9e8d076fcc

SHA256
b590a82d469c26e04cc951ddb80f57260e24324cbc0316bf10accbdd22b5b944

SHA512
0f0931d9b7cef26da6fe80bff8993d8f56e65cd9ef9a04e707baee6b679118034c6691081c42b08d86f0fb458d8365969ac0dcabaf9ebfa84dc6f28bcba1d2da

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