6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf

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
09/04/2024, 21:07

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General

Target

6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf.exe
Size

198KB
MD5

2fe5f92cd346808e1f27b69def18bca6
SHA1

e86f7ebfbb2cf79f8373bd64b8e1efbe269456bc
SHA256

6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf
SHA512

4912e3e296dba239bcf54088f9d79875d6c9216f5e3f689fe2e0904459d5cd8dafccb544b1b499fb700b204626aaaf7f79d7c653d15f6089ef757af4e7f0c33c
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOW:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX7

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2552	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2356	zskhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\zskhost.exe	6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf.exe
File opened for modification	C:\Windows\Debug\zskhost.exe	6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf.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	1704	6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 2552	1704	6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf.exe	29
PID 1704 wrote to memory of 2552	1704	6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf.exe	29
PID 1704 wrote to memory of 2552	1704	6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf.exe	29
PID 1704 wrote to memory of 2552	1704	6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf.exe	29

C:\Users\Admin\AppData\Local\Temp\6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf.exe
"C:\Users\Admin\AppData\Local\Temp\6af2acfc2952e9bc4b40eb1f3bf2bf3dc6425f3971a2720cbd6bdc4b13c25bbf.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\6AF2AC~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2552

C:\Windows\Debug\zskhost.exe
C:\Windows\Debug\zskhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2356

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
1a0916ef1ccbc46cb10811f89146e4b3

SHA1
00dae7945df559bf3698fc74abfa324f36d10cc9

SHA256
12263b3b034afbf25ac6c716ac293ab3f52ba3ac594c0459180ea29355e56732

SHA512
c4cf9f313b82ca7f5f8bd00711591e36e700b4cf204fe4bb297276d049253841a3c732de192529915177daa3c90210c8e1111c48e17318e0e94e7c5f745392ec

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