stealc | 01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6

General

Target

01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe
Size

2.0MB
MD5

d7786417bebdc3947675cd7d3899040a
SHA1

50580f213d6972b331a764024f3657d7dd8152cb
SHA256

01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6
SHA512

e9228d11417272a4720312192fb34dc6ae31ab2d844202a972122cc6e46663f7b97953f79e67d0cb7e64a8d84eab05672f0edf28548defc8aa1cdf31020edd6a
SSDEEP

49152:eqtdPVosJEEz/+VHA58ljrIY+96lJS9bZ:e6d9fJNc7jvedZ

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/ta904ek

https://steamcommunity.com/profiles/76561199695752269

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 9 IoCs

stealer

resource	yara_rule
behavioral1/memory/3968-1-0x0000000004170000-0x00000000042BC000-memory.dmp	family_vidar_v7
behavioral1/memory/3440-4-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/3440-8-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/3440-10-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/3440-13-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/3440-14-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/3440-15-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/3440-32-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/3440-33-0x0000000000400000-0x0000000000649000-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
3440	katE927.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 3968 set thread context of 3440	3968	01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe	90

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	katE927.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3440	katE927.tmp
3440	katE927.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 3440	3968	01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe	90
PID 3968 wrote to memory of 3440	3968	01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe	90
PID 3968 wrote to memory of 3440	3968	01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe	90
PID 3968 wrote to memory of 3440	3968	01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe	90
PID 3968 wrote to memory of 3440	3968	01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe	90
PID 3968 wrote to memory of 3440	3968	01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe	90
PID 3968 wrote to memory of 3440	3968	01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe	90
PID 3968 wrote to memory of 3440	3968	01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe	90

C:\Users\Admin\AppData\Local\Temp\01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe
"C:\Users\Admin\AppData\Local\Temp\01c33d0515f30d322d6ae611043e13ebb4b6fc1b9a31bb9ed0e3bc93adf6b4b6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Users\Admin\AppData\Local\Temp\katE927.tmp
  C:\Users\Admin\AppData\Local\Temp\katE927.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3440

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 --mojo-platform-channel-handle=4832 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:916

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\katE927.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3440-10-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/3440-4-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/3440-8-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/3440-13-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/3440-14-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/3440-15-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/3440-17-0x000000001B770000-0x000000001B9CF000-memory.dmp

Filesize
2.4MB

Download
memory/3440-32-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/3440-33-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/3968-1-0x0000000004170000-0x00000000042BC000-memory.dmp

Filesize
1.3MB

Download
memory/3968-9-0x0000000000400000-0x0000000000614000-memory.dmp

Filesize
2.1MB

Download
memory/3968-0-0x00000000025C0000-0x00000000025C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads