stealc | 10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf

General

Target

10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe
Size

1.8MB
MD5

36e21f6f4d61bcb0376ae5450021f04d
SHA1

d63c029b9e5a8b6e32fd399f17125a3a4e08cfcc
SHA256

10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf
SHA512

f5ed203348b9fa4f75f0bf4751a4a1a2302fb5978473744b79d112728883e48e6e745e58ff430d7a34347e523cf1ac1f2e499e3d269e5cdec5729381108f964e
SSDEEP

24576:FBfuZfeq6sJO6hTdtTF+TxMoxQH1Tj4wtjYZH1DmoYYzi3WH45yv+OueSJhm9e:F7qFTJtTF+TxMoxc1TU+j+dAzGwlrh

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 8 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/4860-3-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4860-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4860-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4728-4-0x0000000004080000-0x00000000041C9000-memory.dmp	family_vidar_v7
behavioral2/memory/4860-16-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4860-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4860-34-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4860-35-0x0000000000400000-0x0000000000646000-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
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

kat57D4.tmp

pid process

4860 kat57D4.tmp
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

pid	process
4860	kat57D4.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe

description	pid	process	target process
PID 4728 set thread context of 4860	4728	10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe	kat57D4.tmp

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:

kat57D4.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat57D4.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat57D4.tmp

pid process

4860 kat57D4.tmp
4860 kat57D4.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat57D4.tmp

pid	process
4860	kat57D4.tmp
4860	kat57D4.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe

description	pid	process	target process
PID 4728 wrote to memory of 4860	4728	10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe	kat57D4.tmp
PID 4728 wrote to memory of 4860	4728	10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe	kat57D4.tmp
PID 4728 wrote to memory of 4860	4728	10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe	kat57D4.tmp
PID 4728 wrote to memory of 4860	4728	10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe	kat57D4.tmp
PID 4728 wrote to memory of 4860	4728	10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe	kat57D4.tmp
PID 4728 wrote to memory of 4860	4728	10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe	kat57D4.tmp
PID 4728 wrote to memory of 4860	4728	10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe	kat57D4.tmp
PID 4728 wrote to memory of 4860	4728	10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe	kat57D4.tmp

C:\Users\Admin\AppData\Local\Temp\10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe
"C:\Users\Admin\AppData\Local\Temp\10ba7d7ff71bf707d29b7e14251de759ba6277d6ca1a85113d6b110e8c43efbf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4728

C:\Users\Admin\AppData\Local\Temp\kat57D4.tmp
C:\Users\Admin\AppData\Local\Temp\kat57D4.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4860

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat57D4.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/4728-0-0x0000000000890000-0x0000000000891000-memory.dmp

Filesize
4KB

Download
memory/4728-10-0x0000000000400000-0x00000000005D1000-memory.dmp

Filesize
1.8MB

Download
memory/4728-4-0x0000000004080000-0x00000000041C9000-memory.dmp

Filesize
1.3MB

Download
memory/4860-3-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4860-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4860-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4860-16-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4860-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4860-20-0x0000000019400000-0x000000001965F000-memory.dmp

Filesize
2.4MB

Download
memory/4860-34-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4860-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads