b58eec6e5aabc701404d5b5556c86fff5cc103c69eeda00061e838c4f122288f

Analysis

max time kernel
1s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04-02-2024 08:33

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General

Target

tmp.exe
Size

421KB
MD5

10a331a12ca40f3293dfadfcecb8d071
SHA1

ada41586d1366cf76c9a652a219a0e0562cc41af
SHA256

b58eec6e5aabc701404d5b5556c86fff5cc103c69eeda00061e838c4f122288f
SHA512

1a5b8e77ddbab97bb4c848adbcd7dbfb9ca84307d1844dba9572fcea48a2cbb091a3fc52663b87568416adf18a1338adc07aab0bd5f1ab36a03c8ff8a035d399
SSDEEP

12288:jh1Fk70TnvjcL8o0S86aZ+ldnqA1W0PeF7H:5k70TrcJX32ih1Re7H

Score

7^/10

Malware Config

Signatures

.NET Reactor proctector 2 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

Processes:

resource	yara_rule
behavioral2/memory/4656-0-0x0000000002510000-0x0000000002564000-memory.dmp	net_reactor
behavioral2/memory/4656-5-0x0000000005130000-0x0000000005182000-memory.dmp	net_reactor

Suspicious use of SetThreadContext 1 IoCs

Processes:

tmp.exe

description pid process target process

PID 4656 set thread context of 3356 4656 tmp.exe RegAsm.exe

description	pid	process	target process
PID 4656 set thread context of 3356	4656	tmp.exe	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

tmp.exe

description	pid	process	target process
PID 4656 wrote to memory of 3356	4656	tmp.exe	RegAsm.exe
PID 4656 wrote to memory of 3356	4656	tmp.exe	RegAsm.exe
PID 4656 wrote to memory of 3356	4656	tmp.exe	RegAsm.exe
PID 4656 wrote to memory of 3356	4656	tmp.exe	RegAsm.exe
PID 4656 wrote to memory of 3356	4656	tmp.exe	RegAsm.exe
PID 4656 wrote to memory of 3356	4656	tmp.exe	RegAsm.exe
PID 4656 wrote to memory of 3356	4656	tmp.exe	RegAsm.exe
PID 4656 wrote to memory of 3356	4656	tmp.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4656

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:3356

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe"
3⤵
PID:2296

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe
Filesize
4KB

MD5
a5ce3aba68bdb438e98b1d0c70a3d95c

SHA1
013f5aa9057bf0b3c0c24824de9d075434501354

SHA256
9b860be98a046ea97a7f67b006e0b1bc9ab7731dd2a0f3a9fd3d710f6c43278a

SHA512
7446f1256873b51a59b9d2d3498cef5a41dbce55864c2a5fb8cb7d25f7d6e6d8ea249d551a45b75d99b1ad0d6fb4b5e4544e5ca77bcd627717d6598b5f566a79

Download Submit
memory/2296-44-0x00007FF913660000-0x00007FF914121000-memory.dmp

Filesize
10.8MB

Download
memory/2296-42-0x00007FF913660000-0x00007FF914121000-memory.dmp

Filesize
10.8MB

Download
memory/2296-40-0x0000000000790000-0x0000000000798000-memory.dmp

Filesize
32KB

Download
memory/3356-25-0x0000000007970000-0x00000000079C0000-memory.dmp

Filesize
320KB

Download
memory/3356-21-0x0000000005930000-0x0000000005996000-memory.dmp

Filesize
408KB

Download
memory/3356-9-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3356-41-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/3356-27-0x0000000008530000-0x0000000008A5C000-memory.dmp

Filesize
5.2MB

Download
memory/3356-14-0x00000000055B0000-0x00000000055C2000-memory.dmp

Filesize
72KB

Download
memory/3356-17-0x00000000056E0000-0x00000000057EA000-memory.dmp

Filesize
1.0MB

Download
memory/3356-19-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/3356-20-0x0000000005650000-0x000000000569C000-memory.dmp

Filesize
304KB

Download
memory/3356-18-0x0000000005610000-0x000000000564C000-memory.dmp

Filesize
240KB

Download
memory/3356-16-0x00000000016E0000-0x00000000016F0000-memory.dmp

Filesize
64KB

Download
memory/3356-13-0x0000000005B30000-0x0000000006148000-memory.dmp

Filesize
6.1MB

Download
memory/3356-26-0x0000000007E30000-0x0000000007FF2000-memory.dmp

Filesize
1.8MB

Download
memory/3356-24-0x00000000068F0000-0x000000000690E000-memory.dmp

Filesize
120KB

Download
memory/3356-22-0x00000000064D0000-0x0000000006546000-memory.dmp

Filesize
472KB

Download
memory/3356-23-0x00000000065F0000-0x0000000006682000-memory.dmp

Filesize
584KB

Download
memory/4656-6-0x0000000002240000-0x0000000002250000-memory.dmp

Filesize
64KB

Download
memory/4656-1-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/4656-12-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/4656-15-0x0000000002740000-0x0000000004740000-memory.dmp

Filesize
32.0MB

Download
memory/4656-5-0x0000000005130000-0x0000000005182000-memory.dmp

Filesize
328KB

Download
memory/4656-4-0x0000000004B80000-0x0000000005124000-memory.dmp

Filesize
5.6MB

Download
memory/4656-0-0x0000000002510000-0x0000000002564000-memory.dmp

Filesize
336KB

Download
memory/4656-2-0x0000000002240000-0x0000000002250000-memory.dmp

Filesize
64KB

Download
memory/4656-43-0x0000000002740000-0x0000000004740000-memory.dmp

Filesize
32.0MB

Download
memory/4656-3-0x0000000002240000-0x0000000002250000-memory.dmp

Filesize
64KB

Download