stealc | d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8

General

Target

d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe
Size

2.1MB
MD5

8674f4aea115533acc14f9f4d9c7ecf3
SHA1

2832bb5c39a923f6360cdcc32fb6ef2d4ad41166
SHA256

d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8
SHA512

a1defe4d06aa48b460381f170cee938b7061aab6daf5b185590d17bb3bece97c6cf3b95bd34acaad92e6bc53da7905ee896617252c90653639e16b1671f4d336
SSDEEP

24576:Ub4m+sws1qLVNMIlJl6DRKbAlcNRfCKVUfMxVVtes12FxwojKr98YGeGG9iO:UZXOjt6DuAwCKVUkxVVChjHZQs

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354

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

resource	yara_rule
behavioral2/memory/4960-1-0x0000000004140000-0x0000000004250000-memory.dmp	family_vidar_v7
behavioral2/memory/3592-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3592-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3592-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3592-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3592-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3592-24-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3592-25-0x0000000000400000-0x0000000000648000-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

pid	Process
3592	kat7956.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4960 set thread context of 3592	4960	d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe	78

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat7956.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3592	kat7956.tmp
3592	kat7956.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 3592	4960	d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe	78
PID 4960 wrote to memory of 3592	4960	d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe	78
PID 4960 wrote to memory of 3592	4960	d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe	78
PID 4960 wrote to memory of 3592	4960	d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe	78
PID 4960 wrote to memory of 3592	4960	d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe	78
PID 4960 wrote to memory of 3592	4960	d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe	78
PID 4960 wrote to memory of 3592	4960	d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe	78
PID 4960 wrote to memory of 3592	4960	d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe	78

C:\Users\Admin\AppData\Local\Temp\d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe
"C:\Users\Admin\AppData\Local\Temp\d94a750e1910e66d7b5dab9cccbb270388cfc9ec5a74bebbec4ed33303ae62c8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Users\Admin\AppData\Local\Temp\kat7956.tmp
  C:\Users\Admin\AppData\Local\Temp\kat7956.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3592

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\kat7956.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3592-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3592-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3592-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3592-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3592-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3592-16-0x0000000019360000-0x00000000195BF000-memory.dmp

Filesize
2.4MB

Download
memory/3592-24-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3592-25-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4960-0-0x00000000025B0000-0x00000000025B1000-memory.dmp

Filesize
4KB

Download
memory/4960-1-0x0000000004140000-0x0000000004250000-memory.dmp

Filesize
1.1MB

Download
memory/4960-9-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads