stealc | c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a

General

Target

c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe
Size

354KB
MD5

5e26f758424a931e10f47df3a5bd657b
SHA1

ff652da66f4c6e517f71a6bd12b7d13a4433950e
SHA256

c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a
SHA512

1f7135903e57df3ff110eaee0700b64ea3d2ce865cbdeb3344c44d8d1fde34058e268f441bd74fc25c0a153c90019d8b1dce783372adb27276eeccac25176292
SSDEEP

6144:MnCfsH8qHTe98nOBgYxMG+HW0ArXht8z+T15dJ4aYaOinN4Xq0UYc0ermz:MnmsH8swLxMGcQrRKz01lHOA4Xq0xVea

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 3 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/4128-1-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/4128-4-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/4128-6-0x0000000000400000-0x0000000000643000-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 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4128-1-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4128-4-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4128-6-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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

Processes:

resource	yara_rule
behavioral2/memory/4128-1-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral2/memory/4128-4-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral2/memory/4128-6-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

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

Processes:

resource	yara_rule
behavioral2/memory/4128-1-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
behavioral2/memory/4128-4-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
behavioral2/memory/4128-6-0x0000000000400000-0x0000000000643000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation

Suspicious use of SetThreadContext 1 IoCs

Processes:

c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe

description	pid	process	target process
PID 4756 set thread context of 4128	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2848 4128 WerFault.exe RegAsm.exe

pid	pid_target	process	target process
2848	4128	WerFault.exe	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe

description	pid	process	target process
PID 4756 wrote to memory of 4004	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4004	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4004	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4128	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4128	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4128	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4128	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4128	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4128	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4128	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4128	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe
PID 4756 wrote to memory of 4128	4756	c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe
"C:\Users\Admin\AppData\Local\Temp\c1a01b10b2b9dad03d7e7e37e8e2f3b5028ac1a3f13f7bf574671c661a4e719a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4756

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:4004

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:4128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4128 -s 2208
3⤵
- Program crash
PID:2848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4128 -ip 4128
1⤵
PID:4732

Network

MITRE ATT&CK Matrix

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Downloads

memory/4128-1-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4128-4-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4128-6-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4756-0-0x0000000000D36000-0x0000000000D38000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads