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
MD5

e755b7599fc8b631b954d2d80a3246cb
SHA1

0f557b0b356fc7b5462d252cccd19f93b2cc696a
SHA256

4b8e43a1cee980394eb2845ea6657b376746b84b52bbd3d2ea062cbdfb292d5d
SHA512

426bec87d3c521b99d34813d9953aa7eaebbbebc155056e3fe53f893c8fca7a9ee1c4657c192472c82323470388f1238a994ac6fb54ad3d7f2e42355229e2a7c
SSDEEP

3072:AWrLpduTeRflPTgZv6NV5GqZdPAxusJt6fgMvXM0jJ5Y7eyFNeVmlUOL18c:AUL4YpTV4mAxh6fDyFxL18c

Score

7^/10

Malware Config

Signatures

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

C4Loader.exe

description pid process target process

PID 1184 set thread context of 964 1184 C4Loader.exe vbc.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1648 1184 WerFault.exe C4Loader.exe

description	pid	process	target process
PID 1184 set thread context of 964	1184	C4Loader.exe	vbc.exe

pid	pid_target	process	target process
1648	1184	WerFault.exe	C4Loader.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

C4Loader.exe

description	pid	process	target process
PID 1184 wrote to memory of 964	1184	C4Loader.exe	vbc.exe
PID 1184 wrote to memory of 964	1184	C4Loader.exe	vbc.exe
PID 1184 wrote to memory of 964	1184	C4Loader.exe	vbc.exe
PID 1184 wrote to memory of 964	1184	C4Loader.exe	vbc.exe
PID 1184 wrote to memory of 964	1184	C4Loader.exe	vbc.exe
PID 1184 wrote to memory of 964	1184	C4Loader.exe	vbc.exe
PID 1184 wrote to memory of 1648	1184	C4Loader.exe	WerFault.exe
PID 1184 wrote to memory of 1648	1184	C4Loader.exe	WerFault.exe
PID 1184 wrote to memory of 1648	1184	C4Loader.exe	WerFault.exe
PID 1184 wrote to memory of 1648	1184	C4Loader.exe	WerFault.exe

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

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

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

Filesize
20KB

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

Filesize
20KB

Download
memory/964-62-0x0000000000401159-mapping.dmp

Download
memory/1648-63-0x0000000000000000-mapping.dmp

Download