2f478d678b9bfffd8217ad54345c27df346fa6bf28177ae0e0c7a37417284f4a

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2024, 05:04

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General

Target

VirusShare-00f4688d22a38d97636ccacd12a6d809.vbs
Size

47KB
MD5

00f4688d22a38d97636ccacd12a6d809
SHA1

7258d29991e94da7f53793aee6329c7853a0ce65
SHA256

2f478d678b9bfffd8217ad54345c27df346fa6bf28177ae0e0c7a37417284f4a
SHA512

ce87e9eda378d4197d0ac4408f68c7f8c3c03d7ab171bd00536bcbff968e9d71db2083ea97a870aaadb16b42ca63b67099ef08ff1e911e555b5ecb4943eb24c2
SSDEEP

768:Zk2vAJST7mMDtX+Mj58NPcBo3nK1rbLUAECAPlcnZlQ7:C+Oga0XZji6Bo3nsrfU4APlqE

Score

7^/10

aspackv2 persistence

Malware Config

Signatures

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0006000000023133-4.dat	aspack_v212_v242

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
3088	rsmss.exe
60	rsmss.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ctfmon = "wscript.exe C:\\Windows\\dnet32.vbs %"	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vsmon = "C:\\Windows\\System32\\rsmss.exe"	WScript.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\System32\rsmss.exe	WScript.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\dnet32.vbs	WScript.exe
File opened for modification	C:\Windows\dnet32.vbs	WScript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 3088	4792	WScript.exe	84
PID 4792 wrote to memory of 3088	4792	WScript.exe	84
PID 4792 wrote to memory of 3088	4792	WScript.exe	84

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\VirusShare-00f4688d22a38d97636ccacd12a6d809.vbs"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Windows\System32\rsmss.exe
  "C:\Windows\System32\rsmss.exe"
  2⤵
  - Executes dropped EXE
  PID:3088

C:\Windows\System32\rsmss.exe
"C:\Windows\System32\rsmss.exe"
1⤵
- Executes dropped EXE
PID:60

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\System32\rsmss.exe

Filesize
15KB

MD5
55ec72ba6e45435c2893460dbdbc0f2b

SHA1
ba2d3fe8fd36f3575b8be1a48c5857598908ee6e

SHA256
b9896e1f9ee819c3e4e2b1b8898fa96b65fbff2b6dc5c26a6aa8791a67386b01

SHA512
ac8791969dd9ebcc018f9ee6a275686018becc6a39a05e570fd2b867d66621fe306f014f0f9c7bebfb1b6cf6c5a67665fe18eef9ac55c2e89731709315e2bf73

Download Submit
memory/60-10-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/3088-7-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/3088-11-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads