8aac99035f9d59d4b903ea0792fd102ef39d613a670a5346c3aa747c1e0b9a5e

Resubmissions

03/09/2023, 00:09

230903-afx9asfg8t 7

02/09/2023, 23:31

230902-3h44vafg31 5

Analysis

max time kernel
34s
max time network
35s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
02/09/2023, 23:31

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General

Target

Primordial.dll
Size

17.1MB
MD5

813f69f601f2177a14e9282e14bcffa1
SHA1

66c3b6ee63eb0852ac2dfd2e9afc1e3dc56767f8
SHA256

8aac99035f9d59d4b903ea0792fd102ef39d613a670a5346c3aa747c1e0b9a5e
SHA512

bab6d141a151af3fa4b6e278ea43d8efced6a99f8a9279f81fb5f9deca6c35e1865b390dbcf1d34d7925f3c170965b41a129be6978107d13b052b31d914065df
SSDEEP

3072:1lbMw6KQE0K19jxph0LR/hSMXlk4ZqKFya5XB67Tzn+Yl:145Enph0lhSMXlBXBWH+Yl

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{FD85EC3C-6B13-446C-99C8-556C29E83B21}.catalogItem	svchost.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3020	rundll32.exe
3020	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4868	3020	WerFault.exe	87

Checks processor information in registry 2 TTPs 3 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	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4128 wrote to memory of 3020	4128	rundll32.exe	87
PID 4128 wrote to memory of 3020	4128	rundll32.exe	87
PID 4128 wrote to memory of 3020	4128	rundll32.exe	87

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Primordial.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4128
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\Primordial.dll,#1
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:3020
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3020 -s 580
    3⤵
    - Program crash
    PID:4868

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:1172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3020 -ip 3020
1⤵
PID:1144

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

Windows 7 deprecation

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Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads