stealc | 75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec

General

Target

75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe
Size

2.0MB
MD5

2d015b6026789c6c08faf04897e8f557
SHA1

b2ea96cdf090e6b56a2b964ad5fe7ea9b429607e
SHA256

75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec
SHA512

c31c1e6b23f52ce2b40ee9d4ac574c761426e8ac636b24d872d2cf1a5b33d2fd12da520068bd66dbe3738b20650f67be266442cf12f1e0927214605f419ab586
SSDEEP

49152:s4K3x1vUCJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18CtIuoITsdZ

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
behavioral1/memory/1472-1-0x0000000004000000-0x0000000004149000-memory.dmp	family_vidar_v7
behavioral1/memory/2840-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2840-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2840-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2840-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2840-18-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2840-35-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2840-36-0x0000000000400000-0x0000000000646000-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:

katE213.tmp

pid process

2840 katE213.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
2840	katE213.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe

description	pid	process	target process
PID 1472 set thread context of 2840	1472	75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe	katE213.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:

katE213.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString katE213.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

katE213.tmp

pid process

2840 katE213.tmp
2840 katE213.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katE213.tmp

pid	process
2840	katE213.tmp
2840	katE213.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe

description	pid	process	target process
PID 1472 wrote to memory of 2840	1472	75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe	katE213.tmp
PID 1472 wrote to memory of 2840	1472	75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe	katE213.tmp
PID 1472 wrote to memory of 2840	1472	75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe	katE213.tmp
PID 1472 wrote to memory of 2840	1472	75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe	katE213.tmp
PID 1472 wrote to memory of 2840	1472	75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe	katE213.tmp
PID 1472 wrote to memory of 2840	1472	75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe	katE213.tmp
PID 1472 wrote to memory of 2840	1472	75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe	katE213.tmp
PID 1472 wrote to memory of 2840	1472	75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe	katE213.tmp

C:\Users\Admin\AppData\Local\Temp\75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe
"C:\Users\Admin\AppData\Local\Temp\75d83da857a1980966b206d3714bc2fd820a59a3a70e2553a70f770a394ce3ec.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1472

C:\Users\Admin\AppData\Local\Temp\katE213.tmp
C:\Users\Admin\AppData\Local\Temp\katE213.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2840

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4124,i,5711962389779687290,1245653010537220991,262144 --variations-seed-version --mojo-platform-channel-handle=4040 /prefetch:8
1⤵
PID:4460

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\katE213.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1472-0-0x0000000002370000-0x0000000002371000-memory.dmp

Filesize
4KB

Download
memory/1472-1-0x0000000004000000-0x0000000004149000-memory.dmp

Filesize
1.3MB

Download
memory/1472-9-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/2840-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2840-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2840-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2840-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2840-18-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2840-20-0x000000001B770000-0x000000001B9CF000-memory.dmp

Filesize
2.4MB

Download
memory/2840-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2840-36-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads