stealc | 6d7226154b8ed4534ed8e0a97e3c2863d094cc85be6a4bd23be5975865a5085a

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
15-05-2024 01:00

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General

Target

e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe
Size

3.0MB
MD5

097a014e9066d6a4dd30e057e18eb511
SHA1

2baa37cdc9b69e4083fdf468240cbacb1f2851ae
SHA256

e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2
SHA512

3409f75f0d073146410ebf31f487626e0c5fc01abb962f56b673256e72981f3e4f5c063e6690feeff1b2937bd14b453c38823242c9dee9e607fe63888d9ad627
SSDEEP

49152:HzcK4Uk57r6mnw8fqFEIawGt2jlobG+FVSA7tffhpZ4F/3:HzvMWmnZSVawGtjHFVS8ffDZ4J

Score

10^/10

stealc vidar zgrat rat spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 12 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/1092-20-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-22-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-25-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-29-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-30-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-47-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-48-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-64-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-65-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-76-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-77-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-78-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7

Detect ZGRat V1 1 IoCs

Processes:

resource yara_rule

behavioral2/memory/112-1-0x00000000009C0000-0x0000000000CC2000-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
Downloads MZ/PE file
.NET Reactor proctector 1 IoCs
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

Processes:

resource yara_rule

behavioral2/memory/112-1-0x00000000009C0000-0x0000000000CC2000-memory.dmp net_reactor
Loads dropped DLL 1 IoCs

Processes:

e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe

pid process

112 e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Suspicious use of SetThreadContext 1 IoCs

Processes:

e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe

description pid process target process

PID 112 set thread context of 1092 112 e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe MsBuild.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1700 112 WerFault.exe e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

MsBuild.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString MsBuild.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4564 timeout.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

MsBuild.exe

pid process

1092 MsBuild.exe
1092 MsBuild.exe
1092 MsBuild.exe
1092 MsBuild.exe

resource	yara_rule
behavioral2/memory/112-1-0x00000000009C0000-0x0000000000CC2000-memory.dmp	family_zgrat_v1

resource	yara_rule
behavioral2/memory/112-1-0x00000000009C0000-0x0000000000CC2000-memory.dmp	net_reactor

pid	process
112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe

description	pid	process	target process
PID 112 set thread context of 1092	112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe	MsBuild.exe

pid	pid_target	process	target process
1700	112	WerFault.exe	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MsBuild.exe

pid	process
4564	timeout.exe

pid	process
1092	MsBuild.exe
1092	MsBuild.exe
1092	MsBuild.exe
1092	MsBuild.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exeMsBuild.execmd.exe

description	pid	process	target process
PID 112 wrote to memory of 1092	112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe	MsBuild.exe
PID 112 wrote to memory of 1092	112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe	MsBuild.exe
PID 112 wrote to memory of 1092	112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe	MsBuild.exe
PID 112 wrote to memory of 1092	112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe	MsBuild.exe
PID 112 wrote to memory of 1092	112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe	MsBuild.exe
PID 112 wrote to memory of 1092	112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe	MsBuild.exe
PID 112 wrote to memory of 1092	112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe	MsBuild.exe
PID 112 wrote to memory of 1092	112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe	MsBuild.exe
PID 112 wrote to memory of 1092	112	e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe	MsBuild.exe
PID 1092 wrote to memory of 2316	1092	MsBuild.exe	cmd.exe
PID 1092 wrote to memory of 2316	1092	MsBuild.exe	cmd.exe
PID 1092 wrote to memory of 2316	1092	MsBuild.exe	cmd.exe
PID 2316 wrote to memory of 4564	2316	cmd.exe	timeout.exe
PID 2316 wrote to memory of 4564	2316	cmd.exe	timeout.exe
PID 2316 wrote to memory of 4564	2316	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe
"C:\Users\Admin\AppData\Local\Temp\e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:112

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
2⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1092

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe" & rd /s /q "C:\ProgramData\IDHDGIEHJJJJ" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:2316

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:4564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 112 -s 940
2⤵
- Program crash
PID:1700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 112 -ip 112
1⤵
PID:4840

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Protect544cd51a.dll
Filesize
742KB

MD5
544cd51a596619b78e9b54b70088307d

SHA1
4769ddd2dbc1dc44b758964ed0bd231b85880b65

SHA256
dfce2d4d06de6452998b3c5b2dc33eaa6db2bd37810d04e3d02dc931887cfddd

SHA512
f56d8b81022bb132d40aa78596da39b5c212d13b84b5c7d2c576bbf403924f1d22e750de3b09d1be30aea359f1b72c5043b19685fc9bf06d8040bfee16b17719

Download Submit
memory/112-18-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-1-0x00000000009C0000-0x0000000000CC2000-memory.dmp

Filesize
3.0MB

Download
memory/112-19-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-4-0x0000000005680000-0x0000000005812000-memory.dmp

Filesize
1.6MB

Download
memory/112-24-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-10-0x0000000005540000-0x0000000005550000-memory.dmp

Filesize
64KB

Download
memory/112-11-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-12-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-13-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-14-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-15-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-16-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-17-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-0-0x0000000074E1E000-0x0000000074E1F000-memory.dmp

Filesize
4KB

Download
memory/112-3-0x0000000074E10000-0x00000000755C0000-memory.dmp

Filesize
7.7MB

Download
memory/112-2-0x0000000005550000-0x00000000055EC000-memory.dmp

Filesize
624KB

Download
memory/1092-33-0x000000001B720000-0x000000001B97F000-memory.dmp

Filesize
2.4MB

Download
memory/1092-20-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-25-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-29-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-30-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-22-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-47-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-65-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-64-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-48-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-76-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-77-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1092-78-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download