b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d

Analysis

max time kernel
150s
max time network
52s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
19/10/2022, 16:26

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General

Target

b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe
Size

894KB
MD5

a19907ab418d87e34fb6c9c4ebacc140
SHA1

7aadbda62e90270ffd323f30026e69cbe755c967
SHA256

b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d
SHA512

6bb14ecc530d5198f6c55cfa7caf42e6ee204613c5cd22945daec76253c09f65136dea6327af902291b119de0d2d5337da0b7dc37a7ee028a1b3941b825b3f7d
SSDEEP

12288:rbpHYUKy5U1bo9t8DMRSW9vbciUiLuAvOxMt11i27QitjF:r5sJo6YrFUiyAak11LtjF

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
820	svchest000.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1380-55-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/files/0x000a0000000122f3-58.dat	upx
behavioral1/memory/820-60-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/820-62-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/1380-63-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/1380-65-0x0000000000400000-0x0000000000597000-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	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe"	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1380	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe
820	svchest000.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Windows\svchest000.exe	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe
File created	\??\c:\Windows\BJ.exe	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe
File opened for modification	\??\c:\Windows\BJ.exe	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe
File created	\??\c:\Windows\svchest000.exe	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 820	1380	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe	27
PID 1380 wrote to memory of 820	1380	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe	27
PID 1380 wrote to memory of 820	1380	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe	27
PID 1380 wrote to memory of 820	1380	b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe	27

C:\Users\Admin\AppData\Local\Temp\b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe
"C:\Users\Admin\AppData\Local\Temp\b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d.exe"
1⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1380
- \??\c:\Windows\svchest000.exe
  c:\Windows\svchest000.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:820

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
894KB

MD5
a19907ab418d87e34fb6c9c4ebacc140

SHA1
7aadbda62e90270ffd323f30026e69cbe755c967

SHA256
b72b5d5a9b946c660fa47f97defb0f28306d06c80a2dde6b1fad1c8e46daa01d

SHA512
6bb14ecc530d5198f6c55cfa7caf42e6ee204613c5cd22945daec76253c09f65136dea6327af902291b119de0d2d5337da0b7dc37a7ee028a1b3941b825b3f7d

Download Submit
memory/820-60-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/820-62-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1380-54-0x00000000757A1000-0x00000000757A3000-memory.dmp

Filesize
8KB

Download
memory/1380-55-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1380-63-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1380-64-0x00000000028D0000-0x0000000002A67000-memory.dmp

Filesize
1.6MB

Download
memory/1380-65-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1380-66-0x00000000028D0000-0x0000000002A67000-memory.dmp

Filesize
1.6MB

Download