stealc | db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b

General

Target

db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe
Size

2.0MB
MD5

f3f40d913882efc1a8081e3cb3328f01
SHA1

ca42a340e3a8fa9fb99b2ca563f6b6140d8ac07f
SHA256

db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b
SHA512

85639b3fdfd6199b8f686ca7815c5b0c65954fb772c5131d7d79954984c8920ff6f67420e8d2c71ec24ae4af709658ee1ef3ddee36a10ad89a09daa6178c39cc
SSDEEP

49152:s4K3x1vUqJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18qtIuoITsdZ

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

resource	yara_rule
behavioral1/memory/228-1-0x0000000004170000-0x00000000042B9000-memory.dmp	family_vidar_v7
behavioral1/memory/4024-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/4024-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/4024-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/4024-14-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/4024-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/4024-32-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/4024-33-0x0000000000400000-0x0000000000646000-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

pid	Process
4024	katF126.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 228 set thread context of 4024	228	db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.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	katF126.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4024	katF126.tmp
4024	katF126.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 228 wrote to memory of 4024	228	db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe	90
PID 228 wrote to memory of 4024	228	db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe	90
PID 228 wrote to memory of 4024	228	db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe	90
PID 228 wrote to memory of 4024	228	db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe	90
PID 228 wrote to memory of 4024	228	db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe	90
PID 228 wrote to memory of 4024	228	db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe	90
PID 228 wrote to memory of 4024	228	db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe	90
PID 228 wrote to memory of 4024	228	db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe	90

C:\Users\Admin\AppData\Local\Temp\db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe
"C:\Users\Admin\AppData\Local\Temp\db9f0d9b7a81e96052c1f2761070ee0b5c853999c3e5f8ee3e6e04e05ade226b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:228
- C:\Users\Admin\AppData\Local\Temp\katF126.tmp
  C:\Users\Admin\AppData\Local\Temp\katF126.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4024

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=1036 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:4924

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\katF126.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/228-0-0x00000000023A0000-0x00000000023A1000-memory.dmp

Filesize
4KB

Download
memory/228-1-0x0000000004170000-0x00000000042B9000-memory.dmp

Filesize
1.3MB

Download
memory/228-9-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/4024-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4024-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4024-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4024-14-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4024-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4024-17-0x000000001DC30000-0x000000001DE8F000-memory.dmp

Filesize
2.4MB

Download
memory/4024-32-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4024-33-0x0000000000400000-0x0000000000646000-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