207c4f9e62528d693f096220ad365f5124918efc7994c537c956f9a79bcbadd3

Analysis

max time kernel
93s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
30-01-2024 02:23

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General

Target

file.exe
Size

698KB
MD5

bf2a3e48b0ea897e1cb01f8e2d37a995
SHA1

4e7cd01f8126099d550e126ff1c44b9f60f79b70
SHA256

207c4f9e62528d693f096220ad365f5124918efc7994c537c956f9a79bcbadd3
SHA512

78769b0130eed100e2bb1d0794f371b0fa1286d0c644337bc2d9bbe24f6467fd89aa8acf92ac719cc3c045d57097665fe8f3f567f2d4297a7ee7968bbab58b91
SSDEEP

12288:mh1Fk70TnvjcDopmEUd4+rL4VZvvApKFuzWMfJoacb7hj30Cq7rc4p/2:Ak70TrcDopfE+wUFuzW3NFgdrJx2

Score

7^/10

Malware Config

Signatures

.NET Reactor proctector 4 IoCs

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

resource	yara_rule
behavioral2/memory/3248-0-0x0000000004DC0000-0x0000000004E58000-memory.dmp	net_reactor
behavioral2/memory/3248-6-0x0000000004C90000-0x0000000004D28000-memory.dmp	net_reactor
behavioral2/memory/3248-13-0x0000000002850000-0x0000000004850000-memory.dmp	net_reactor
behavioral2/memory/5112-19-0x0000000002D50000-0x0000000002D82000-memory.dmp	net_reactor

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3248 set thread context of 5112	3248	file.exe	88

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5048	5112	WerFault.exe	88
3168	5112	WerFault.exe	88

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3248 wrote to memory of 4456	3248	file.exe	87
PID 3248 wrote to memory of 4456	3248	file.exe	87
PID 3248 wrote to memory of 4456	3248	file.exe	87
PID 3248 wrote to memory of 5112	3248	file.exe	88
PID 3248 wrote to memory of 5112	3248	file.exe	88
PID 3248 wrote to memory of 5112	3248	file.exe	88
PID 3248 wrote to memory of 5112	3248	file.exe	88
PID 3248 wrote to memory of 5112	3248	file.exe	88
PID 3248 wrote to memory of 5112	3248	file.exe	88
PID 3248 wrote to memory of 5112	3248	file.exe	88
PID 3248 wrote to memory of 5112	3248	file.exe	88
PID 3248 wrote to memory of 5112	3248	file.exe	88

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4456
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:5112
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5112 -s 1208
    3⤵
    - Program crash
    PID:5048
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5112 -s 1168
    3⤵
    - Program crash
    PID:3168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 5112 -ip 5112
1⤵
PID:792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 5112 -ip 5112
1⤵
PID:2284

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/3248-13-0x0000000002850000-0x0000000004850000-memory.dmp

Filesize
32.0MB

Download
memory/3248-0-0x0000000004DC0000-0x0000000004E58000-memory.dmp

Filesize
608KB

Download
memory/3248-2-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download
memory/3248-3-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download
memory/3248-4-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download
memory/3248-5-0x0000000004E60000-0x0000000005404000-memory.dmp

Filesize
5.6MB

Download
memory/3248-6-0x0000000004C90000-0x0000000004D28000-memory.dmp

Filesize
608KB

Download
memory/3248-17-0x0000000075320000-0x0000000075AD0000-memory.dmp

Filesize
7.7MB

Download
memory/3248-1-0x0000000075320000-0x0000000075AD0000-memory.dmp

Filesize
7.7MB

Download
memory/5112-12-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/5112-16-0x0000000002C10000-0x0000000002C50000-memory.dmp

Filesize
256KB

Download
memory/5112-18-0x0000000002D50000-0x0000000002D82000-memory.dmp

Filesize
200KB

Download
memory/5112-21-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/5112-20-0x0000000002D50000-0x0000000002D82000-memory.dmp

Filesize
200KB

Download
memory/5112-19-0x0000000002D50000-0x0000000002D82000-memory.dmp

Filesize
200KB

Download
memory/5112-9-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/5112-15-0x0000000002DC0000-0x0000000002DC1000-memory.dmp

Filesize
4KB

Download
memory/5112-22-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download