3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727

Analysis

max time kernel
151s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 03:40

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General

Target

3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe
Size

1009KB
MD5

07452af09263bbf69257acda94b006c0
SHA1

0aae9833c22481b9fc8ed4dd9c25e003dfae9244
SHA256

3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727
SHA512

ca5d3f848fe132f15be47866627028c17d61eab0dc187da436ca75842443baaf517638116f6a09f2d25725e70aacb051b6c1de7bfcdfdd592ee07e0805e4d1c8
SSDEEP

12288:rbpHYUKy5U1bo9t8DMRSW9vbciUiLuAvOxMt11i27QitjnYiz:r5sJo6YrFUiyAak11LtjnYO

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
976	svchest000.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1812-55-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/files/0x00090000000126f1-58.dat	upx
behavioral1/memory/976-62-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/1812-63-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/1812-65-0x0000000000400000-0x0000000000597000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe"	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1812	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe
976	svchest000.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	\??\c:\Windows\BJ.exe	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe
File opened for modification	\??\c:\Windows\BJ.exe	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe
File created	\??\c:\Windows\svchest000.exe	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe
File opened for modification	\??\c:\Windows\svchest000.exe	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 976	1812	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe	28
PID 1812 wrote to memory of 976	1812	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe	28
PID 1812 wrote to memory of 976	1812	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe	28
PID 1812 wrote to memory of 976	1812	3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe	28

C:\Users\Admin\AppData\Local\Temp\3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe
"C:\Users\Admin\AppData\Local\Temp\3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727.exe"
1⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1812
- \??\c:\Windows\svchest000.exe
  c:\Windows\svchest000.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:976

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\svchest000.exe

Filesize
1009KB

MD5
07452af09263bbf69257acda94b006c0

SHA1
0aae9833c22481b9fc8ed4dd9c25e003dfae9244

SHA256
3a1f7075228720fc6dd90798a897bcbf79b5469ea817b60f2b131c48b8435727

SHA512
ca5d3f848fe132f15be47866627028c17d61eab0dc187da436ca75842443baaf517638116f6a09f2d25725e70aacb051b6c1de7bfcdfdd592ee07e0805e4d1c8

Download Submit
memory/976-62-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1812-54-0x0000000076411000-0x0000000076413000-memory.dmp

Filesize
8KB

Download
memory/1812-55-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1812-63-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1812-64-0x00000000025A0000-0x0000000002737000-memory.dmp

Filesize
1.6MB

Download
memory/1812-65-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download