stealc | 6ba9d7cfc6378cdeeb2006a0cf9014c9a10bb3f1d480bebc435de97307868d7c

Resubmissions

18-06-2024 17:22

240618-vxq7jasfpg 10

18-06-2024 17:19

240618-vvtjwasfjh 10

Analysis

max time kernel
149s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18-06-2024 17:19

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General

Target

files/Setup.exe
Size

446KB
MD5

485008b43f0edceba0e0d3ca04bc1c1a
SHA1

55ae8f105af415bb763d1b87f6572f078052877c
SHA256

12c22ba646232d5d5087d0300d5cfd46fed424f26143a02dc866f1bfceab3c10
SHA512

402652786daae635c7405f5fa0924d768cbde2086f9f57b10f00f921dec98e37168f5c3a6baa5593ba9a478f3971d32747c517ffd485d25634c924e6b08815b1
SSDEEP

12288:vK5+DMJA3TAz4plk9iZOOti81N5y1qMIg+GV5Zul3M:y5+DMJA3TAz4plk9ijK1qlGV7ulM

Score

10^/10

stealc vidar persistence privilege_escalation stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral7/memory/2820-25-0x00000000006F0000-0x0000000000E3C000-memory.dmp	family_vidar_v7
behavioral7/memory/2820-32-0x00000000006F0000-0x0000000000E3C000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Suspicious use of SetThreadContext 1 IoCs

Processes:

Setup.exe

description pid process target process

PID 2932 set thread context of 1944 2932 Setup.exe netsh.exe
Loads dropped DLL 7 IoCs

Processes:

netsh.exedcom.au3WerFault.exe

pid process

1944 netsh.exe
2820 dcom.au3
2720 WerFault.exe
2720 WerFault.exe
2720 WerFault.exe
2720 WerFault.exe
2720 WerFault.exe

description	pid	process	target process
PID 2932 set thread context of 1944	2932	Setup.exe	netsh.exe

pid	process
1944	netsh.exe
2820	dcom.au3
2720	WerFault.exe
2720	WerFault.exe
2720	WerFault.exe
2720	WerFault.exe
2720	WerFault.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

Processes:

netsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2720 2820 WerFault.exe dcom.au3
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Setup.exenetsh.exe

pid process

2932 Setup.exe
2932 Setup.exe
1944 netsh.exe
1944 netsh.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

Setup.exenetsh.exe

pid process

2932 Setup.exe
1944 netsh.exe

pid	pid_target	process	target process
2720	2820	WerFault.exe	dcom.au3

pid	process
2932	Setup.exe
2932	Setup.exe
1944	netsh.exe
1944	netsh.exe

pid	process
2932	Setup.exe
1944	netsh.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Setup.exenetsh.exedcom.au3

description	pid	process	target process
PID 2932 wrote to memory of 1944	2932	Setup.exe	netsh.exe
PID 2932 wrote to memory of 1944	2932	Setup.exe	netsh.exe
PID 2932 wrote to memory of 1944	2932	Setup.exe	netsh.exe
PID 2932 wrote to memory of 1944	2932	Setup.exe	netsh.exe
PID 2932 wrote to memory of 1944	2932	Setup.exe	netsh.exe
PID 1944 wrote to memory of 2820	1944	netsh.exe	dcom.au3
PID 1944 wrote to memory of 2820	1944	netsh.exe	dcom.au3
PID 1944 wrote to memory of 2820	1944	netsh.exe	dcom.au3
PID 1944 wrote to memory of 2820	1944	netsh.exe	dcom.au3
PID 1944 wrote to memory of 2820	1944	netsh.exe	dcom.au3
PID 1944 wrote to memory of 2820	1944	netsh.exe	dcom.au3
PID 2820 wrote to memory of 2720	2820	dcom.au3	WerFault.exe
PID 2820 wrote to memory of 2720	2820	dcom.au3	WerFault.exe
PID 2820 wrote to memory of 2720	2820	dcom.au3	WerFault.exe
PID 2820 wrote to memory of 2720	2820	dcom.au3	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\files\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\files\Setup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2932

C:\Windows\SysWOW64\netsh.exe
C:\Windows\SysWOW64\netsh.exe
2⤵
- Loads dropped DLL
- Event Triggered Execution: Netsh Helper DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1944

C:\Users\Admin\AppData\Local\Temp\dcom.au3
C:\Users\Admin\AppData\Local\Temp\dcom.au3
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 148
4⤵
- Loads dropped DLL
- Program crash
PID:2720

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\96cc5e6e
Filesize
6.8MB

MD5
aa6bece1bc10def704a1ad965f3ab1c9

SHA1
71cfe49c855a3f04919efd73a72e23e0e6e5f66a

SHA256
7a4409ec058316a75aab661e10b6b3b1b305811a28e052cb1cbfb289beb21566

SHA512
98b4c08092d9518565dba4aa418343db9b0b0b131e2b5736ccc94dc4ee680aaf9d8db0e6162760becf8a658bd613429717a4e5daeccb37b251e2482bab6fe06f

Download Submit
\Users\Admin\AppData\Local\Temp\dcom.au3
Filesize
872KB

MD5
c56b5f0201a3b3de53e561fe76912bfd

SHA1
2a4062e10a5de813f5688221dbeb3f3ff33eb417

SHA256
237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

SHA512
195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

Download Submit
memory/1944-13-0x0000000077260000-0x0000000077409000-memory.dmp

Filesize
1.7MB

Download
memory/1944-23-0x00000000745C0000-0x0000000074734000-memory.dmp

Filesize
1.5MB

Download
memory/1944-16-0x00000000745C0000-0x0000000074734000-memory.dmp

Filesize
1.5MB

Download
memory/1944-15-0x00000000745C0000-0x0000000074734000-memory.dmp

Filesize
1.5MB

Download
memory/1944-11-0x00000000745C0000-0x0000000074734000-memory.dmp

Filesize
1.5MB

Download
memory/2820-21-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-22-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-25-0x00000000006F0000-0x0000000000E3C000-memory.dmp

Filesize
7.3MB

Download
memory/2820-32-0x00000000006F0000-0x0000000000E3C000-memory.dmp

Filesize
7.3MB

Download
memory/2932-9-0x00000000745C0000-0x0000000074734000-memory.dmp

Filesize
1.5MB

Download
memory/2932-8-0x00000000745C0000-0x0000000074734000-memory.dmp

Filesize
1.5MB

Download
memory/2932-7-0x00000000745D2000-0x00000000745D4000-memory.dmp

Filesize
8KB

Download
memory/2932-0-0x00000000745C0000-0x0000000074734000-memory.dmp

Filesize
1.5MB

Download
memory/2932-1-0x0000000077260000-0x0000000077409000-memory.dmp

Filesize
1.7MB

Download

Resubmissions

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads