stealc | 862b5233c734d1645ad64a0068d157e61670023f137852924bae189a5e67c5ce

Analysis

max time kernel
128s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
27-03-2023 19:54

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General

Target

stealc_default.exe
Size

80KB
MD5

415b10d78533886b89be01b61bcbbf50
SHA1

775e7ec1dcd91c6a77b866714031874f69110046
SHA256

862b5233c734d1645ad64a0068d157e61670023f137852924bae189a5e67c5ce
SHA512

51c69ea28d2b63db008b8bae2c0389894217d71213b59979411886dc62f461caad2a1947e3341dcaf473d79cd4f0788b4c3d1d1a8b7e96dcdd0a8d08a5d065af
SSDEEP

1536:BMDb4J5iHi/67i7iHrvI5Z96BLyT/h3djRDLsOfYLowbUOIt/:BMYJ5iHi/67keMf96BWV3dBLYu

Score

10^/10

stealc discovery stealer

Malware Config

Extracted

Family

stealc

http://normanhoffman.top/410b5129171f10ea.php

Signatures

Detects Stealc stealer 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/2020-54-0x0000000000D40000-0x0000000000F68000-memory.dmp	family_stealc
behavioral1/memory/2020-55-0x0000000000D40000-0x0000000000F68000-memory.dmp	family_stealc

Stealc
Stealc is an infostealer written in C++.
stealer stealc
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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
636	2020	WerFault.exe	27

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	stealc_default.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	stealc_default.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2020	stealc_default.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 636	2020	stealc_default.exe	30
PID 2020 wrote to memory of 636	2020	stealc_default.exe	30
PID 2020 wrote to memory of 636	2020	stealc_default.exe	30
PID 2020 wrote to memory of 636	2020	stealc_default.exe	30

C:\Users\Admin\AppData\Local\Temp\stealc_default.exe
"C:\Users\Admin\AppData\Local\Temp\stealc_default.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2020 -s 716
  2⤵
  - Program crash
  PID:636

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2020-54-0x0000000000D40000-0x0000000000F68000-memory.dmp

Filesize
2.2MB

Download
memory/2020-55-0x0000000000D40000-0x0000000000F68000-memory.dmp

Filesize
2.2MB

Download