4b8e43a1cee980394eb2845ea6657b376746b84b52bbd3d2ea062cbdfb292d5d

Analysis

max time kernel
42s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/11/2022, 08:37

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General

Target
C4Loader.exe
Size 126KB
Sample221107-kh6cssafcl
SHA256 4b8e43a1cee980394eb2845ea6657b376746b84b52bbd3d2ea062cbdfb292d5d
MD5 e755b7599fc8b631b954d2d80a3246cb
SHA1 0f557b0b356fc7b5462d252cccd19f93b2cc696a
SHA512 426bec87d3c521b99d34813d9953aa7eaebbbebc155056e3fe53f893c8fca7a9ee1c4657c192472c82323470388f1238a994ac6fb54ad3d7f2e42355229e2a7c
SSDEEP 3072:AWrLpduTeRflPTgZv6NV5GqZdPAxusJt6fgMvXM0jJ5Y7eyFNeVmlUOL18c:AUL4YpTV4mAxh6fDyFxL18c
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

Malware Config

Signatures

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1184 set thread context of 964	1184	C4Loader.exe	26

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1648	1184	WerFault.exe	25

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 964	1184	C4Loader.exe	26
PID 1184 wrote to memory of 964	1184	C4Loader.exe	26
PID 1184 wrote to memory of 964	1184	C4Loader.exe	26
PID 1184 wrote to memory of 964	1184	C4Loader.exe	26
PID 1184 wrote to memory of 964	1184	C4Loader.exe	26
PID 1184 wrote to memory of 964	1184	C4Loader.exe	26
PID 1184 wrote to memory of 1648	1184	C4Loader.exe	27
PID 1184 wrote to memory of 1648	1184	C4Loader.exe	27
PID 1184 wrote to memory of 1648	1184	C4Loader.exe	27
PID 1184 wrote to memory of 1648	1184	C4Loader.exe	27

C:\Users\Admin\AppData\Local\Temp\C4Loader.exe
"C:\Users\Admin\AppData\Local\Temp\C4Loader.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1184 -s 48
  2⤵
  - Program crash
  PID:1648

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/964-54-0x0000000000400000-0x0000000000405000-memory.dmp

Download

memory/964-56-0x0000000000400000-0x0000000000405000-memory.dmp