stealc | 0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07/05/2024, 03:28

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General

Target
file.exe
Size 349KB
Sample240507-d1bsksba77
SHA256 0a8357cb9a1d348d1c4b4ec101f2328fd43f976803bcc360525ced55fbb9aeaf
MD5 b9773393891d9cc471cd58cac09052dd
SHA1 784a14954c7abca7d7e2e92c60b93557238426f4
SHA512 72a669e736ecfc5422a07542e15cad7d82b9ae41591f4c375e31fa4dc2d70f620b44ff19b5b6d0928aac3cf244a3143af433d47eeaa3c5c6b9968cf71d1e6848
SSDEEP 6144:Dqv0Ib3JJzx1MfjF+N33l3+YBVYjZ7eZH9PJWweK/ojy8Kkc2ivFt+0P:Gb3TEbF+13NPYd6B9lcdFBsPP
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc vidar zgrat ad7dbf02afc50b46afd33ddc12f41082 rat stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

Version

Botnet

ad7dbf02afc50b46afd33ddc12f41082

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/1360-5-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1360-11-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1360-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7

Detect ZGRat V1 1 IoCs

resource	yara_rule
behavioral2/memory/220-1-0x0000000000590000-0x00000000005EC000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 220 set thread context of 1360	220	file.exe	86

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3148	1360	WerFault.exe	86

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 220 wrote to memory of 1452	220	file.exe	85
PID 220 wrote to memory of 1452	220	file.exe	85
PID 220 wrote to memory of 1452	220	file.exe	85
PID 220 wrote to memory of 1360	220	file.exe	86
PID 220 wrote to memory of 1360	220	file.exe	86
PID 220 wrote to memory of 1360	220	file.exe	86
PID 220 wrote to memory of 1360	220	file.exe	86
PID 220 wrote to memory of 1360	220	file.exe	86
PID 220 wrote to memory of 1360	220	file.exe	86
PID 220 wrote to memory of 1360	220	file.exe	86
PID 220 wrote to memory of 1360	220	file.exe	86
PID 220 wrote to memory of 1360	220	file.exe	86

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:220
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1452
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1360
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 2124
    3⤵
    - Program crash
    PID:3148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1360 -ip 1360
1⤵
PID:712

Network

MITRE ATT&CK Matrix

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Downloads

memory/220-0-0x000000007464E000-0x000000007464F000-memory.dmp

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memory/220-1-0x0000000000590000-0x00000000005EC000-memory.dmp

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memory/220-4-0x0000000074640000-0x0000000074DF0000-memory.dmp

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memory/220-12-0x0000000074640000-0x0000000074DF0000-memory.dmp

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memory/220-13-0x0000000074640000-0x0000000074DF0000-memory.dmp

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memory/220-17-0x0000000074640000-0x0000000074DF0000-memory.dmp

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memory/1360-5-0x0000000000400000-0x0000000000646000-memory.dmp

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memory/1360-11-0x0000000000400000-0x0000000000646000-memory.dmp

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memory/1360-9-0x0000000000400000-0x0000000000646000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads