stealc | 8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd

General

Target

8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe
Size

2.0MB
MD5

4c050161ae0f07b7cd127fb97b18856d
SHA1

a756a6091283962c9a64070c6049004e572ae1e3
SHA256

8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd
SHA512

5516a08a65d9c34fec140e0431064f0bf4e8a5d3a8e1f51f4a392d12e4c2ce43a287ed1387849cc12366e1bf3ce5a1d903b684dd0813d677f9dd31d1b7dad97b
SSDEEP

49152:s4K3x1vU6JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex186tIuoITsdZ

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/3364-2-0x00000000040E0000-0x0000000004229000-memory.dmp	family_vidar_v7
behavioral2/memory/4220-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4220-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4220-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4220-14-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4220-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4220-32-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4220-33-0x0000000000400000-0x0000000000646000-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:

katE3D8.tmp

pid process

4220 katE3D8.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
4220	katE3D8.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe

description	pid	process	target process
PID 3364 set thread context of 4220	3364	8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe	katE3D8.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:

katE3D8.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString katE3D8.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

katE3D8.tmp

pid process

4220 katE3D8.tmp
4220 katE3D8.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katE3D8.tmp

pid	process
4220	katE3D8.tmp
4220	katE3D8.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe

description	pid	process	target process
PID 3364 wrote to memory of 4220	3364	8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe	katE3D8.tmp
PID 3364 wrote to memory of 4220	3364	8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe	katE3D8.tmp
PID 3364 wrote to memory of 4220	3364	8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe	katE3D8.tmp
PID 3364 wrote to memory of 4220	3364	8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe	katE3D8.tmp
PID 3364 wrote to memory of 4220	3364	8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe	katE3D8.tmp
PID 3364 wrote to memory of 4220	3364	8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe	katE3D8.tmp
PID 3364 wrote to memory of 4220	3364	8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe	katE3D8.tmp
PID 3364 wrote to memory of 4220	3364	8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe	katE3D8.tmp

C:\Users\Admin\AppData\Local\Temp\8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe
"C:\Users\Admin\AppData\Local\Temp\8dc80a71783ce7e542c002d47d895780f709f7f3cc5023e61a64c1c32854b8bd.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3364
- C:\Users\Admin\AppData\Local\Temp\katE3D8.tmp
  C:\Users\Admin\AppData\Local\Temp\katE3D8.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4220

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=3628,i,13281073920029625837,8253721632651544158,262144 --variations-seed-version --mojo-platform-channel-handle=3888 /prefetch:8
1⤵
PID:1896

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\katE3D8.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3364-0-0x00000000008C0000-0x00000000008C1000-memory.dmp

Filesize
4KB

Download
memory/3364-2-0x00000000040E0000-0x0000000004229000-memory.dmp

Filesize
1.3MB

Download
memory/3364-10-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/4220-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4220-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4220-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4220-14-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4220-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4220-17-0x000000001B790000-0x000000001B9EF000-memory.dmp

Filesize
2.4MB

Download
memory/4220-32-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4220-33-0x0000000000400000-0x0000000000646000-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