87efb13349cb020a8cbb0d041f6318124014afa065011e4d924f1c04ec59b972

Analysis

max time kernel
141s
max time network
134s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-12-2023 08:39

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General

Target

12900ad825a26dce65c5b96dcbc9af84.exe
Size

202KB
MD5

12900ad825a26dce65c5b96dcbc9af84
SHA1

2496d5d3266b4ff041b243712ab87ed94de9ccf8
SHA256

87efb13349cb020a8cbb0d041f6318124014afa065011e4d924f1c04ec59b972
SHA512

9ba7a137888740356c4ca3c564d1359f71e48212179ed2ca8a70da769e38ecbaff89cb61c0e447f4014114991cbbe697be5eba933bf61dd1365ac79b50af60de
SSDEEP

6144:gHCTecfxmJ5TINDYwUi+pLTAxxNMIehlwxLECJ:cGxG5To8wUi4cxJehlegCJ

Score

7^/10

bootkit persistence upx

Malware Config

Signatures

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1436-0-0x0000000000400000-0x0000000000477000-memory.dmp	upx
behavioral1/memory/1436-17-0x0000000000400000-0x0000000000477000-memory.dmp	upx
behavioral1/memory/1436-23-0x0000000000400000-0x0000000000477000-memory.dmp	upx
behavioral1/memory/1436-26-0x0000000000400000-0x0000000000477000-memory.dmp	upx
behavioral1/memory/1436-29-0x0000000000400000-0x0000000000477000-memory.dmp	upx

Enumerates connected drives 3 TTPs 21 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)	\??\q:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\w:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\x:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\g:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\j:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\n:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\m:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\p:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\t:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\y:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\e:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\i:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\l:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\o:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\v:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\s:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\u:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\z:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\h:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\k:	12900ad825a26dce65c5b96dcbc9af84.exe
File opened (read-only)	\??\r:	12900ad825a26dce65c5b96dcbc9af84.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	12900ad825a26dce65c5b96dcbc9af84.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\SAItest.txt	12900ad825a26dce65c5b96dcbc9af84.exe

C:\Users\Admin\AppData\Local\Temp\12900ad825a26dce65c5b96dcbc9af84.exe
"C:\Users\Admin\AppData\Local\Temp\12900ad825a26dce65c5b96dcbc9af84.exe"
1⤵
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
PID:1436

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

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Downloads

memory/1436-0-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/1436-17-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/1436-23-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/1436-26-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/1436-29-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads