31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24

Analysis

max time kernel
185s
max time network
183s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2022 03:41

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General

Target

31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe
Size

796KB
MD5

0c6dc740cf013cc3c64cae7703bcf1ab
SHA1

4fc5ebe0161e5549f4e81d3776f6f8af26b5da2a
SHA256

31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24
SHA512

6e902d02b34985eb8c04fe56c92a9ddcd7157f5fd51f232bab0c6779652eb855c9b3c9a39ca313185a74e70cf53d800b53b9f49c88d6103effc326d21e74bafc
SSDEEP

12288:rbpHYUKy5U1bo9t8DMRSW9vbciUiLuAvOxMt11i27Qitj7HANUTNk:r5sJo6YrFUiyAak11Ltjs

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4536	svchest425075242507520.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1128-132-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral2/memory/1128-133-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral2/files/0x0006000000022e64-136.dat	upx
behavioral2/files/0x0006000000022e64-137.dat	upx
behavioral2/memory/4536-138-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral2/memory/4536-140-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral2/memory/1128-141-0x0000000000400000-0x0000000000597000-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	31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe"	31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1128	31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe
4536	svchest425075242507520.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	\??\c:\Windows\BJ.exe	31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe
File opened for modification	\??\c:\Windows\BJ.exe	31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe
File created	\??\c:\Windows\svchest425075242507520.exe	31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe
File opened for modification	\??\c:\Windows\svchest425075242507520.exe	31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1128 wrote to memory of 4536	1128	31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe	79
PID 1128 wrote to memory of 4536	1128	31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe	79
PID 1128 wrote to memory of 4536	1128	31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe	79

C:\Users\Admin\AppData\Local\Temp\31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe
"C:\Users\Admin\AppData\Local\Temp\31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24.exe"
1⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1128
- \??\c:\Windows\svchest425075242507520.exe
  c:\Windows\svchest425075242507520.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:4536

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\svchest425075242507520.exe

Filesize
796KB

MD5
0c6dc740cf013cc3c64cae7703bcf1ab

SHA1
4fc5ebe0161e5549f4e81d3776f6f8af26b5da2a

SHA256
31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24

SHA512
6e902d02b34985eb8c04fe56c92a9ddcd7157f5fd51f232bab0c6779652eb855c9b3c9a39ca313185a74e70cf53d800b53b9f49c88d6103effc326d21e74bafc

Download Submit
\??\c:\Windows\svchest425075242507520.exe

Filesize
796KB

MD5
0c6dc740cf013cc3c64cae7703bcf1ab

SHA1
4fc5ebe0161e5549f4e81d3776f6f8af26b5da2a

SHA256
31b803ccce04972adb6a173954aa8ab5fbb82f0699acc0ce40117c82b4c2bd24

SHA512
6e902d02b34985eb8c04fe56c92a9ddcd7157f5fd51f232bab0c6779652eb855c9b3c9a39ca313185a74e70cf53d800b53b9f49c88d6103effc326d21e74bafc

Download Submit
memory/1128-132-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1128-133-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1128-141-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/4536-135-0x0000000000000000-mapping.dmp

Download
memory/4536-138-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/4536-140-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download