dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579

Analysis

max time kernel
141s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/02/2024, 15:42

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General

Target

dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579.exe
Size

196KB
MD5

5cdba07e027071a707abd3d40cc8f935
SHA1

bfd624b287f73d723e03e6aeb31c738172b29e0e
SHA256

dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579
SHA512

7b3c90c2708a40b8ec06c7b46fcac059f85e28e37f9a425c00ae42a21f66d43cbd7318b47d41bba05d081339288022a6040c354ca0fa1e32cc796ef1ee4faff0
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOy:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX/

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3016	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2140	zskhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\zskhost.exe	dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579.exe
File opened for modification	C:\Windows\Debug\zskhost.exe	dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579.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	1992	dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 3016	1992	dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579.exe	29
PID 1992 wrote to memory of 3016	1992	dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579.exe	29
PID 1992 wrote to memory of 3016	1992	dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579.exe	29
PID 1992 wrote to memory of 3016	1992	dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579.exe	29

C:\Users\Admin\AppData\Local\Temp\dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579.exe
"C:\Users\Admin\AppData\Local\Temp\dd499234ddb9fbf033eb5a22ddc40fe85191dcf5b6ef653fad371718c4ec8579.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\DD4992~1.EXE > nul
  2⤵
  - Deletes itself
  PID:3016

C:\Windows\Debug\zskhost.exe
C:\Windows\Debug\zskhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2140

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
196KB

MD5
85676ae1d6de36922066adff93c8f483

SHA1
e8e2b5c4fac878813f98052c3da4a6273d5ee392

SHA256
945f088ec7c27147c571fa37a33250ff8c95131d5816a156293392ce0ce885a3

SHA512
25ec462510bcb8f5801764dab16eff26ddadf6fe402c56bee61e9f8db12cc10f0831d830cdd08c3f0d2804b2f8a40898b7310445f63bcafd28ab4767040b6aeb

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