a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba

Analysis

max time kernel
141s
max time network
129s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12-03-2024 05:00

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General

Target

a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba.exe
Size

197KB
MD5

2bcbf7ffedcc82b54712c7b046828a5f
SHA1

e33d69a52311b4f626da46c9a2a50424eec37cb4
SHA256

a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba
SHA512

19431427fc88c5d67f6431d43ec654bad76654957213da93838bd719adb4f0011c2d00dc9c55be0dff36cf1e6642943bad3c13da1f05a7e96251c0cfb98b126b
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOj:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXi

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2388	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
776	zskhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\zskhost.exe	a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba.exe
File opened for modification	C:\Windows\Debug\zskhost.exe	a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba.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	2228	a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 2388	2228	a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba.exe	29
PID 2228 wrote to memory of 2388	2228	a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba.exe	29
PID 2228 wrote to memory of 2388	2228	a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba.exe	29
PID 2228 wrote to memory of 2388	2228	a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba.exe	29

C:\Users\Admin\AppData\Local\Temp\a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba.exe
"C:\Users\Admin\AppData\Local\Temp\a8ccecf185b3e5b38364a137ccd412c6296235c9ee86b15ed90e65d26ade46ba.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A8CCEC~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2388

C:\Windows\Debug\zskhost.exe
C:\Windows\Debug\zskhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:776

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
197KB

MD5
40bcfb327d1f54ff3ea790e18156b9c2

SHA1
fc8998476239d084918ab014f0483e6b50a22390

SHA256
114d66329dd5b2a4b0b1a83867557c480ae96ffe6cc2f915cf622a4fad64f213

SHA512
3106cac05d8c35267a412432134afdaf79492fc8f67dacb8b9a7f95c91f0b311f0c8eb2651cbb193a095965afbe7cb5f79f6ebf8804ee009abd6521c0c7f2416

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