stealc | df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23

General

Target

df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe
Size

1.9MB
MD5

92472dc6327f646ccb1f8d87bbee3a05
SHA1

441c2d78ffcec4301df862b2f1ba0b34c8b06eaa
SHA256

df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23
SHA512

91292184c5a9af7509cd34a16bc41e0ed139770fbfdd81fdbf7f0227eeeff2f6622fb7594d527053b1421043c0201029fde856db3fdc5ef69d3dab40790c1cd6
SSDEEP

49152:CdKfTn6vqJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnBtIuoITsdZ

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/3204-1-0x0000000004160000-0x00000000042A9000-memory.dmp	family_vidar_v7
behavioral1/memory/2936-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2936-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2936-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2936-14-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2936-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2936-32-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2936-33-0x0000000000400000-0x0000000000646000-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:

katE38A.tmp

pid process

2936 katE38A.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
2936	katE38A.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe

description	pid	process	target process
PID 3204 set thread context of 2936	3204	df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe	katE38A.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:

katE38A.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString katE38A.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

katE38A.tmp

pid process

2936 katE38A.tmp
2936 katE38A.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katE38A.tmp

pid	process
2936	katE38A.tmp
2936	katE38A.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe

description	pid	process	target process
PID 3204 wrote to memory of 2936	3204	df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe	katE38A.tmp
PID 3204 wrote to memory of 2936	3204	df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe	katE38A.tmp
PID 3204 wrote to memory of 2936	3204	df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe	katE38A.tmp
PID 3204 wrote to memory of 2936	3204	df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe	katE38A.tmp
PID 3204 wrote to memory of 2936	3204	df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe	katE38A.tmp
PID 3204 wrote to memory of 2936	3204	df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe	katE38A.tmp
PID 3204 wrote to memory of 2936	3204	df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe	katE38A.tmp
PID 3204 wrote to memory of 2936	3204	df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe	katE38A.tmp

C:\Users\Admin\AppData\Local\Temp\df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe
"C:\Users\Admin\AppData\Local\Temp\df8d478145385897395685b9b055fd07e9f7aae974a4ee651e637c899f9a3f23.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Users\Admin\AppData\Local\Temp\katE38A.tmp
  C:\Users\Admin\AppData\Local\Temp\katE38A.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2936

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=4028,i,13281073920029625837,8253721632651544158,262144 --variations-seed-version --mojo-platform-channel-handle=3984 /prefetch:8
1⤵
PID:4760

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\katE38A.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2936-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2936-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2936-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2936-14-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2936-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2936-17-0x000000001DC20000-0x000000001DE7F000-memory.dmp

Filesize
2.4MB

Download
memory/2936-32-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2936-33-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3204-0-0x0000000000790000-0x0000000000791000-memory.dmp

Filesize
4KB

Download
memory/3204-1-0x0000000004160000-0x00000000042A9000-memory.dmp

Filesize
1.3MB

Download
memory/3204-9-0x0000000000400000-0x00000000005EC000-memory.dmp

Filesize
1.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads