1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f

Analysis

max time kernel
148s
max time network
159s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
11/10/2023, 19:30

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General

Target

1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe
Size

198KB
MD5

2b2b2cb2b03c3536bd0799beaed21ea3
SHA1

eca02c9c6e9131c6e4a3a69b4680e2be5a298fff
SHA256

1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f
SHA512

d504066ac6683da2a309055cce3c18d3b5dec9e62eb842a8403ca919d3431e9023f89e5c9ebb23e9d01623091210d80e45340ff077736db5f2c4882f42598de6
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOo:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX5

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2252	zskhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\zskhost.exe	1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe
File opened for modification	C:\Windows\Debug\zskhost.exe	1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.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	2076	1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2620	2076	1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe	29
PID 2076 wrote to memory of 2620	2076	1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe	29
PID 2076 wrote to memory of 2620	2076	1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe	29
PID 2076 wrote to memory of 2620	2076	1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe	29

C:\Users\Admin\AppData\Local\Temp\1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe
"C:\Users\Admin\AppData\Local\Temp\1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\1A8313~1.EXE > nul
  2⤵
  PID:2620

C:\Windows\Debug\zskhost.exe
C:\Windows\Debug\zskhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2252

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
79ea5cd3debfa51260539d89fab55afa

SHA1
1cf71635b91164c4cbaed1988af75be949d4d1d2

SHA256
bd95dfcf92728a649877c49ac1fc117c1e03c023c3debb0ba4f49acde4e484c7

SHA512
83feedbb07cd0e7b674ce5f605ae7fd5d288acb3b69f516426c4c9d3585eaeabdbc8dce8d16fba7da272c38d8408225e1177c688a57303ff0cc41493219f8b4c

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