stealc | 48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4

General

Target

48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe
Size

432KB
MD5

7fff271b63f7af3a9a59f068a6f8955f
SHA1

67c0082192328a5c003efe6fd87e38802b95570d
SHA256

48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4
SHA512

55c0a315476321ea11f9696fd3642cc3bd560ce5321d3c0c0f2b6913fce11ee3d4472fef0c8ff9bdd0972ea549d5d5932a92124351cd4f3fce5524d7eb8a2346
SSDEEP

6144:K5/FIlRSG9VJogxAJmVku6fpAgb+K0iudeI9Iaf3PMFViAnHo:w/FIbxAkV1gb7ZuwIaafP0Ho

Score

10^/10

stealc vidar 03cea2609023d13f145ac6c5dc897112 stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

Version

9.3

Botnet

03cea2609023d13f145ac6c5dc897112

C2

https://steamcommunity.com/profiles/76561199680449169

https://t.me/r1g1o

Attributes

profile_id_v2
03cea2609023d13f145ac6c5dc897112
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36 OPR/101.0.0.0

Signatures

Detect Vidar Stealer 4 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/4280-1-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/552-2-0x0000000000940000-0x00000000009A2FAE-memory.dmp	family_vidar_v7
behavioral2/memory/4280-4-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/4280-6-0x0000000000400000-0x0000000000643000-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

Detects Windows executables referencing non-Windows User-Agents 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4280-1-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/552-2-0x0000000000940000-0x00000000009A2FAE-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4280-4-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4280-6-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4280-1-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral2/memory/552-2-0x0000000000940000-0x00000000009A2FAE-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral2/memory/4280-4-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral2/memory/4280-6-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Detects executables containing potential Windows Defender anti-emulation checks 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4280-1-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
behavioral2/memory/552-2-0x0000000000940000-0x00000000009A2FAE-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
behavioral2/memory/4280-4-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
behavioral2/memory/4280-6-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation

Suspicious use of SetThreadContext 1 IoCs

Processes:

48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe

description	pid	process	target process
PID 552 set thread context of 4280	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4272 4280 WerFault.exe RegAsm.exe

pid	pid_target	process	target process
4272	4280	WerFault.exe	RegAsm.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe

description	pid	process	target process
PID 552 wrote to memory of 1500	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 1500	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 1500	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4852	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4852	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4852	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4592	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4592	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4592	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4280	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4280	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4280	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4280	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4280	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4280	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4280	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4280	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe
PID 552 wrote to memory of 4280	552	48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe
"C:\Users\Admin\AppData\Local\Temp\48a6d2eb28127d8bc1623400f0b33ea5f51a7473ce3369a14e8b4a5f0d02bca4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:552

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:1500

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:4852

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:4592

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:4280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4280 -s 2176
3⤵
- Program crash
PID:4272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4280 -ip 4280
1⤵
PID:3256

Network

MITRE ATT&CK Matrix

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Downloads

memory/552-0-0x000000000099E000-0x00000000009A0000-memory.dmp

Filesize
8KB

Download
memory/552-2-0x0000000000940000-0x00000000009A2FAE-memory.dmp

Filesize
395KB

Download
memory/4280-1-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4280-4-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4280-6-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads