b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa

Analysis

max time kernel
254s
max time network
336s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
02/12/2022, 22:08

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General

Target

b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe
Size

880KB
MD5

0d0a886f079ac5842429d6ba99e8d679
SHA1

d939420492c9534c39c08cfac9f17d4569cf2f06
SHA256

b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa
SHA512

aa24b173682a47c4657ba89a372014250ecb864569f3c2f9a3657076b7a6d47e2c818090ac1f740d0bc5c4a8f9cc73d8a8de9dc1ef01516f77bb4c98530e39f6
SSDEEP

12288:rbpHYUKy5U1bo9t8DMRSW9vbciUiLuAvOxMt11i27Qitjt:r5sJo6YrFUiyAak11Ltjt

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
864	svchest000.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/692-55-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/692-57-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/files/0x000a0000000122f5-59.dat	upx
behavioral1/memory/864-63-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/692-64-0x0000000000400000-0x0000000000597000-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	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe"	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
692	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe
864	svchest000.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Windows\svchest000.exe	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe
File opened for modification	\??\c:\Windows\BJ.exe	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe
File created	\??\c:\Windows\BJ.exe	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe
File created	\??\c:\Windows\svchest000.exe	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 692 wrote to memory of 864	692	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe	28
PID 692 wrote to memory of 864	692	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe	28
PID 692 wrote to memory of 864	692	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe	28
PID 692 wrote to memory of 864	692	b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe	28

C:\Users\Admin\AppData\Local\Temp\b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe
"C:\Users\Admin\AppData\Local\Temp\b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa.exe"
1⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:692
- \??\c:\Windows\svchest000.exe
  c:\Windows\svchest000.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:864

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
880KB

MD5
0d0a886f079ac5842429d6ba99e8d679

SHA1
d939420492c9534c39c08cfac9f17d4569cf2f06

SHA256
b2d491e804069d84824be749037cfdcd8f5306d8f847efb04ac8d1c407d573fa

SHA512
aa24b173682a47c4657ba89a372014250ecb864569f3c2f9a3657076b7a6d47e2c818090ac1f740d0bc5c4a8f9cc73d8a8de9dc1ef01516f77bb4c98530e39f6

Download Submit
memory/692-54-0x00000000763D1000-0x00000000763D3000-memory.dmp

Filesize
8KB

Download
memory/692-55-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/692-57-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/692-64-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/692-65-0x0000000002A30000-0x0000000002BC7000-memory.dmp

Filesize
1.6MB

Download
memory/864-63-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download