stealc | 85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313

General

Target

85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe
Size

1.8MB
MD5

5e60fc8215b568c562819366920b2620
SHA1

002ebc98cb986486c4011e048ac30c9afef0dbae
SHA256

85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313
SHA512

eb55a908f7edb677ec3a6e0c6079f4db892597bf076dd138e9a0361ed9085c3b8d1febb31517996ab4242f756fa14363d61b4392f5b89b54ee65c62996ebd784
SSDEEP

24576:FBfuZfeq6s1O6hTdtTF+TxMoxQH1Tj4wtjYZH1DmoYYzi3WH45yv+OueSJhm9e:F7qFnJtTF+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/2028-1-0x0000000004080000-0x00000000041C9000-memory.dmp	family_vidar_v7
behavioral2/memory/3312-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3312-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3312-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3312-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3312-18-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3312-35-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3312-36-0x0000000000400000-0x0000000000646000-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:

kat78F9.tmp

pid process

3312 kat78F9.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
3312	kat78F9.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe

description	pid	process	target process
PID 2028 set thread context of 3312	2028	85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe	kat78F9.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:

kat78F9.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat78F9.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat78F9.tmp

pid process

3312 kat78F9.tmp
3312 kat78F9.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat78F9.tmp

pid	process
3312	kat78F9.tmp
3312	kat78F9.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe

description	pid	process	target process
PID 2028 wrote to memory of 3312	2028	85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe	kat78F9.tmp
PID 2028 wrote to memory of 3312	2028	85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe	kat78F9.tmp
PID 2028 wrote to memory of 3312	2028	85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe	kat78F9.tmp
PID 2028 wrote to memory of 3312	2028	85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe	kat78F9.tmp
PID 2028 wrote to memory of 3312	2028	85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe	kat78F9.tmp
PID 2028 wrote to memory of 3312	2028	85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe	kat78F9.tmp
PID 2028 wrote to memory of 3312	2028	85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe	kat78F9.tmp
PID 2028 wrote to memory of 3312	2028	85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe	kat78F9.tmp

C:\Users\Admin\AppData\Local\Temp\85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe
"C:\Users\Admin\AppData\Local\Temp\85d96fc2a6d7f265f30f426f5cc552b1ef83ace457a289a4efed772232611313.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2028

C:\Users\Admin\AppData\Local\Temp\kat78F9.tmp
C:\Users\Admin\AppData\Local\Temp\kat78F9.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3312

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\kat78F9.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2028-0-0x0000000002430000-0x0000000002431000-memory.dmp

Filesize
4KB

Download
memory/2028-1-0x0000000004080000-0x00000000041C9000-memory.dmp

Filesize
1.3MB

Download
memory/2028-10-0x0000000000400000-0x00000000005D1000-memory.dmp

Filesize
1.8MB

Download
memory/3312-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3312-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3312-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3312-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3312-18-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3312-21-0x0000000019450000-0x00000000196AF000-memory.dmp

Filesize
2.4MB

Download
memory/3312-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3312-36-0x0000000000400000-0x0000000000646000-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