stealc | ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6

General

Target

ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe
Size

2.0MB
MD5

88a5170147422c7d87114005ce2518a4
SHA1

f812c206247978f25d15737b384f5f0e18143253
SHA256

ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6
SHA512

aeb60cf8be8564c2ee635752d7478e715cb42d75d1ffdd99bfe47cf0d0d2fb665bcfbb4d25fee29f1c30fc1cc78f3c58b0ee59f11039c5bd8fb3b0215582d85c
SSDEEP

49152:s4K3x1vUmJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18mtIuoITsdZ

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Signatures

Detect Vidar Stealer 8 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/1140-1-0x0000000004050000-0x0000000004199000-memory.dmp	family_vidar_v7
behavioral2/memory/776-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/776-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/776-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/776-14-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/776-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/776-32-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/776-33-0x0000000000400000-0x0000000000646000-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:

kat78AA.tmp

pid process

776 kat78AA.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
776	kat78AA.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe

description	pid	process	target process
PID 1140 set thread context of 776	1140	ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe	kat78AA.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:

kat78AA.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat78AA.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat78AA.tmp

pid process

776 kat78AA.tmp
776 kat78AA.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat78AA.tmp

pid	process
776	kat78AA.tmp
776	kat78AA.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe

description	pid	process	target process
PID 1140 wrote to memory of 776	1140	ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe	kat78AA.tmp
PID 1140 wrote to memory of 776	1140	ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe	kat78AA.tmp
PID 1140 wrote to memory of 776	1140	ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe	kat78AA.tmp
PID 1140 wrote to memory of 776	1140	ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe	kat78AA.tmp
PID 1140 wrote to memory of 776	1140	ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe	kat78AA.tmp
PID 1140 wrote to memory of 776	1140	ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe	kat78AA.tmp
PID 1140 wrote to memory of 776	1140	ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe	kat78AA.tmp
PID 1140 wrote to memory of 776	1140	ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe	kat78AA.tmp

C:\Users\Admin\AppData\Local\Temp\ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe
"C:\Users\Admin\AppData\Local\Temp\ede59b8cb07cb63e7c79b9d05a8e32f50835e9c7b9aa1a8a5f9a6800041ebac6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1140

C:\Users\Admin\AppData\Local\Temp\kat78AA.tmp
C:\Users\Admin\AppData\Local\Temp\kat78AA.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:776

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\kat78AA.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/776-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/776-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/776-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/776-14-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/776-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/776-17-0x000000001B800000-0x000000001BA5F000-memory.dmp

Filesize
2.4MB

Download
memory/776-32-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/776-33-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1140-0-0x0000000002470000-0x0000000002471000-memory.dmp

Filesize
4KB

Download
memory/1140-1-0x0000000004050000-0x0000000004199000-memory.dmp

Filesize
1.3MB

Download
memory/1140-9-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads