stealc | 0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf

General

Target

0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe
Size

349KB
MD5

b9773393891d9cc471cd58cac09052dd
SHA1

784a14954c7abca7d7e2e92c60b93557238426f4
SHA256

0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf
SHA512

72a669e736ecfc5422a07542e15cad7d82b9ae41591f4c375e31fa4dc2d70f620b44ff19b5b6d0928aac3cf244a3143af433d47eeaa3c5c6b9968cf71d1e6848
SSDEEP

6144:Dqv0Ib3JJzx1MfjF+N33l3+YBVYjZ7eZH9PJWweK/ojy8Kkc2ivFt+0P:Gb3TEbF+13NPYd6B9lcdFBsPP

Score

10^/10

stealc vidar zgrat ad7dbf02afc50b46afd33ddc12f41082 rat stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

Version

9.4

Botnet

ad7dbf02afc50b46afd33ddc12f41082

C2

https://steamcommunity.com/profiles/76561199680449169

https://t.me/r1g1o

Attributes

profile_id_v2
ad7dbf02afc50b46afd33ddc12f41082
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 3 IoCs

stealer

resource	yara_rule
behavioral2/memory/3744-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-5-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7

Detect ZGRat V1 1 IoCs

resource	yara_rule
behavioral2/memory/4680-1-0x0000000000AE0000-0x0000000000B3C000-memory.dmp	family_zgrat_v1

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat

Detects Windows executables referencing non-Windows User-Agents 3 IoCs

resource	yara_rule
behavioral2/memory/3744-10-0x0000000000400000-0x0000000000646000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/3744-8-0x0000000000400000-0x0000000000646000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/3744-5-0x0000000000400000-0x0000000000646000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 3 IoCs

resource	yara_rule
behavioral2/memory/3744-10-0x0000000000400000-0x0000000000646000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral2/memory/3744-8-0x0000000000400000-0x0000000000646000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral2/memory/3744-5-0x0000000000400000-0x0000000000646000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Detects executables containing potential Windows Defender anti-emulation checks 3 IoCs

resource	yara_rule
behavioral2/memory/3744-10-0x0000000000400000-0x0000000000646000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
behavioral2/memory/3744-8-0x0000000000400000-0x0000000000646000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
behavioral2/memory/3744-5-0x0000000000400000-0x0000000000646000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4680 set thread context of 3744	4680	0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe	84

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2876	3744	WerFault.exe	84

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4680 wrote to memory of 3744	4680	0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe	84
PID 4680 wrote to memory of 3744	4680	0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe	84
PID 4680 wrote to memory of 3744	4680	0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe	84
PID 4680 wrote to memory of 3744	4680	0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe	84
PID 4680 wrote to memory of 3744	4680	0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe	84
PID 4680 wrote to memory of 3744	4680	0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe	84
PID 4680 wrote to memory of 3744	4680	0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe	84
PID 4680 wrote to memory of 3744	4680	0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe	84
PID 4680 wrote to memory of 3744	4680	0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe	84

C:\Users\Admin\AppData\Local\Temp\0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe
"C:\Users\Admin\AppData\Local\Temp\0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4680
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:3744
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 2356
    3⤵
    - Program crash
    PID:2876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3744 -ip 3744
1⤵
PID:1984

Network

MITRE ATT&CK Matrix

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Downloads

memory/3744-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3744-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3744-5-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4680-0-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/4680-1-0x0000000000AE0000-0x0000000000B3C000-memory.dmp

Filesize
368KB

Download
memory/4680-2-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/4680-12-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/4680-18-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads