a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38

Analysis

max time kernel
152s
max time network
51s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
07/11/2022, 05:41

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General

Target

a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe
Size

585KB
MD5

20431fc7cdc2c3a3861e429c79eeb8fd
SHA1

b524121a14e6b174de3de872d2133fc8997ea437
SHA256

a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38
SHA512

bdf1a9b080309b2255f5d78f26be51c8e6b790980fc5e5193465e13b58545bfe586481a518f83829a5be1e2127b4b3204bb69d70fa6894edad9f9737aa718428
SSDEEP

12288:rbpHYUKy5U1bo9t8DMRSW9vbciUiLuAvOxMt11i27QitjW:r5sJo6YrFUiyAak11LtjW

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
112	svchest000.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1308-55-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/files/0x000a000000013482-58.dat	upx
behavioral1/memory/112-62-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/1308-63-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/1308-65-0x0000000000400000-0x0000000000597000-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	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe"	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1308	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe
112	svchest000.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Windows\BJ.exe	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe
File created	\??\c:\Windows\BJ.exe	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe
File created	\??\c:\Windows\svchest000.exe	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe
File opened for modification	\??\c:\Windows\svchest000.exe	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1308 wrote to memory of 112	1308	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe	27
PID 1308 wrote to memory of 112	1308	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe	27
PID 1308 wrote to memory of 112	1308	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe	27
PID 1308 wrote to memory of 112	1308	a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe	27

C:\Users\Admin\AppData\Local\Temp\a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe
"C:\Users\Admin\AppData\Local\Temp\a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe"
1⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1308
- \??\c:\Windows\svchest000.exe
  c:\Windows\svchest000.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:112

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
585KB

MD5
20431fc7cdc2c3a3861e429c79eeb8fd

SHA1
b524121a14e6b174de3de872d2133fc8997ea437

SHA256
a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38

SHA512
bdf1a9b080309b2255f5d78f26be51c8e6b790980fc5e5193465e13b58545bfe586481a518f83829a5be1e2127b4b3204bb69d70fa6894edad9f9737aa718428

Download Submit
memory/112-62-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1308-54-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

Filesize
8KB

Download
memory/1308-55-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1308-63-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1308-64-0x00000000028D0000-0x0000000002A67000-memory.dmp

Filesize
1.6MB

Download
memory/1308-65-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download