aea1dcb3a92cb5d5841f7e03a88f6220829e2df1dae2d147e70aef69d16770fb

Analysis

max time kernel
143s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
13-09-2023 01:20

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General

Target

PCICL32.dll
Size

3.6MB
MD5

00587238d16012152c2e951a087f2cc9
SHA1

c4e27a43075ce993ff6bb033360af386b2fc58ff
SHA256

63aa18c32af7144156e7ee2d5ba0fa4f5872a7deb56894f6f96505cbc9afe6f8
SHA512

637950a1f78d3f3d02c30a49a16e91cf3dfccc59104041876789bd7fdf9224d187209547766b91404c67319e13d1606da7cec397315495962cbf3e2ccd5f1226
SSDEEP

49152:cTXNZ+0ci2aYNT8wstdAukudJ1xTvIZamclSp+73mPu:cTXNo0cpKwstTJIkS43mm

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 3 IoCs

Processes:

svchost.exe

description	ioc	process
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{E5787E81-3115-480B-A999-8BE6E85F08FE}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat	svchost.exe

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

Processes:

svchost.exe

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

Processes:

svchost.exe

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

Processes:

rundll32.exe

description	pid	process	target process
PID 3176 wrote to memory of 4588	3176	rundll32.exe	rundll32.exe
PID 3176 wrote to memory of 4588	3176	rundll32.exe	rundll32.exe
PID 3176 wrote to memory of 4588	3176	rundll32.exe	rundll32.exe

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\PCICL32.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3176
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\PCICL32.dll,#1
  2⤵
  PID:4588

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:412

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:\Users\Admin\AppData\Local\Temp\wsu9E82.tmp

Filesize
14KB

MD5
c01eaa0bdcd7c30a42bbb35a9acbf574

SHA1
0aee3e1b873e41d040f1991819d0027b6cc68f54

SHA256
32297224427103aa1834dba276bf5d49cd5dd6bda0291422e47ad0d0706c6d40

SHA512
d26ff775ad39425933cd3df92209faa53ec5b701e65bfbcccc64ce8dd3e79f619a9bad7cc975a98a95f2006ae89e50551877fc315a3050e48d5ab89e0802e2b7

Download Submit
C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat

Filesize
29KB

MD5
a82d8cd52c657004a319feec937a5d64

SHA1
8ee45d21846da631409c94845e1db0570ec8c572

SHA256
d41271ee737df4e1b890af079eff4f3d425ee77a05b49741c3e403263346fd88

SHA512
103158465d9a2757d5993a54c20d448abd15bc4dcd0a15fd0558589391be7189371698cc2fc7db449ef0059c3075ab5837fc373a6fb1c0b7a545c613c6bb1e20

Download Submit