391e080880375fe93108469b21d9312d244bdd86b5f8276793117dfcbcf2245c

Analysis

max time kernel
140s
max time network
120s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
20-06-2024 11:36

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General

Target

PSWin.exe
Size

311KB
MD5

474a12b1eaffdb28820e92b61d4e291a
SHA1

90d971e74428f2f412523e938b91a5be4ea614c5
SHA256

23b3d0ea99bf847f6cd0e4bbcb56ed920eafd215845b80b01a4040b7b964b7de
SHA512

06e33fd812da116c30163851c3b9b018f6a298056abd62d7f4009ac908d1882a3a7bc5baef8c78c71ac90759195f7c9695c896a3cce7f202a50f1a1f2279a92f
SSDEEP

6144:1j7WCpKP03mIZLQPFHt5uq2rsyfbXIGK6ybfp7VwNwf:1WeKP5vJt5wfbXIGKjpP

Score

7^/10

bootkit persistence upx

Malware Config

Signatures

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral7/memory/1700-0-0x0000000000400000-0x000000000051E000-memory.dmp	upx
behavioral7/memory/1700-3-0x0000000000400000-0x000000000051E000-memory.dmp	upx
behavioral7/memory/1700-4-0x0000000000400000-0x000000000051E000-memory.dmp	upx

Enumerates connected drives 3 TTPs 20 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\T:	PSWin.exe
File opened (read-only)	\??\W:	PSWin.exe
File opened (read-only)	\??\X:	PSWin.exe
File opened (read-only)	\??\K:	PSWin.exe
File opened (read-only)	\??\M:	PSWin.exe
File opened (read-only)	\??\O:	PSWin.exe
File opened (read-only)	\??\P:	PSWin.exe
File opened (read-only)	\??\F:	PSWin.exe
File opened (read-only)	\??\I:	PSWin.exe
File opened (read-only)	\??\S:	PSWin.exe
File opened (read-only)	\??\U:	PSWin.exe
File opened (read-only)	\??\V:	PSWin.exe
File opened (read-only)	\??\E:	PSWin.exe
File opened (read-only)	\??\H:	PSWin.exe
File opened (read-only)	\??\L:	PSWin.exe
File opened (read-only)	\??\Q:	PSWin.exe
File opened (read-only)	\??\G:	PSWin.exe
File opened (read-only)	\??\J:	PSWin.exe
File opened (read-only)	\??\N:	PSWin.exe
File opened (read-only)	\??\R:	PSWin.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	PSWin.exe

C:\Users\Admin\AppData\Local\Temp\PSWin.exe
"C:\Users\Admin\AppData\Local\Temp\PSWin.exe"
1⤵
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
PID:1700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1700-0-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/1700-1-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1700-3-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/1700-4-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/1700-5-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads