stealc | c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7

General

Target

c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe
Size

2.2MB
MD5

e9f8de7ba9919a548512ba03cf0184dc
SHA1

a734eb7a05249c9694a9dfa625a16ee0225e9247
SHA256

c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7
SHA512

061cc8cae2edb9d2057fba7d8cbc564cba13ab5ca4c38355bab6a3dcf2f1ccd0bc3ad01489f58307418dd95db19f77559e6b3824944cb5314751c87868731d7b
SSDEEP

49152:lAgY7fvVtbBaxmcqMTBemDKQl+bH4JbjzzEBETT29YMST:llY7nTMBTBemDKQl+bYxzIBA6uMST

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

Detect Vidar Stealer 8 IoCs

stealer

resource	yara_rule
behavioral1/memory/4092-2-0x00000000040E0000-0x00000000041F0000-memory.dmp	family_vidar_v7
behavioral1/memory/1044-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1044-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1044-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1044-22-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1044-23-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1044-40-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1044-41-0x0000000000400000-0x0000000000648000-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
1044	katEA50.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 4092 set thread context of 1044	4092	c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe	88

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	katEA50.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katEA50.tmp

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1044	katEA50.tmp
1044	katEA50.tmp
1044	katEA50.tmp
1044	katEA50.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4092 wrote to memory of 1044	4092	c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe	88
PID 4092 wrote to memory of 1044	4092	c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe	88
PID 4092 wrote to memory of 1044	4092	c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe	88
PID 4092 wrote to memory of 1044	4092	c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe	88
PID 4092 wrote to memory of 1044	4092	c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe	88
PID 4092 wrote to memory of 1044	4092	c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe	88
PID 4092 wrote to memory of 1044	4092	c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe	88
PID 4092 wrote to memory of 1044	4092	c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe	88

C:\Users\Admin\AppData\Local\Temp\c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe
"C:\Users\Admin\AppData\Local\Temp\c7beac79c751fc70be149f09ec43965cb9c28aa87ba2f069bf99d29fc07a68f7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4092
- C:\Users\Admin\AppData\Local\Temp\katEA50.tmp
  C:\Users\Admin\AppData\Local\Temp\katEA50.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:1044

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=4332,i,15721081447618313297,6839074028983272033,262144 --variations-seed-version --mojo-platform-channel-handle=3976 /prefetch:8
1⤵
PID:2844

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\katEA50.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1044-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1044-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1044-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1044-22-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1044-23-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1044-25-0x0000000020120000-0x000000002037F000-memory.dmp

Filesize
2.4MB

Download
memory/1044-40-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1044-41-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4092-0-0x00000000022A0000-0x00000000022A1000-memory.dmp

Filesize
4KB

Download
memory/4092-2-0x00000000040E0000-0x00000000041F0000-memory.dmp

Filesize
1.1MB

Download
memory/4092-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download

Analysis

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