blakcsee_stealer | a72a8533726ff9676614b47cc0301177e9b68769b97ca86e2fc214788767390e

Analysis

max time kernel
898s
max time network
559s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
08/08/2026, 13:47

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General

Target
vsdbg.dll
Size 3.3MB
Sample260808-q3vppaxgrc
SHA256 a72a8533726ff9676614b47cc0301177e9b68769b97ca86e2fc214788767390e
MD5 70238f34192770b683ac450ccd11b434
SHA1 c9b1efc848580b2079adcd3e0d23423117194005
SHA512 eab801d9ed92913338d7e00ed140a91bd3d66212743da3a90d2f6d3f30f15949c22fe09b65308a99aea592b440f6b145f5e9cfba453b1f6ac674d545d85be4ad
SSDEEP 98304:z3Yspbo8fIMr6xz+uTQVwc7fJBFVFO30ER2MiP3wSiUsrYg9Frv4vXNrYQ031Cy:z31Hsxz+uUiUDnHMWwSiUsrYCoXK1
TLSH
T17EF5BF85B3C4AAD9C506DE3A9714F231C1B2B9234FB7E0CA5E97C70A4AB6D514F39B40
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery blakcsee_stealer stealer

Malware Config

Signatures

Family: BlakcSeeStealer
BlakcSeeStealer is a Windows stealer written in C++.
stealer blakcsee_stealer

Looks up external IP address via web service 1 TTPs 5 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

discovery

Internet Connection Discovery

T1016.001

flow	ioc
1	ipapi.co
2	api.ipify.org
4	ipapi.co
1	api.ipify.org
1	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1536 set thread context of 3700	1536	rundll32.exe	80

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

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	ServiceModelReg.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ServiceModelReg.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 3700	1536	rundll32.exe	80
PID 1536 wrote to memory of 3700	1536	rundll32.exe	80
PID 1536 wrote to memory of 3700	1536	rundll32.exe	80
PID 1536 wrote to memory of 3700	1536	rundll32.exe	80
PID 1536 wrote to memory of 3700	1536	rundll32.exe	80
PID 1536 wrote to memory of 3700	1536	rundll32.exe	80
PID 1536 wrote to memory of 3700	1536	rundll32.exe	80
PID 1536 wrote to memory of 3700	1536	rundll32.exe	80
PID 3700 wrote to memory of 3804	3700	ServiceModelReg.exe	81
PID 3700 wrote to memory of 3804	3700	ServiceModelReg.exe	81
PID 3700 wrote to memory of 836	3700	ServiceModelReg.exe	83
PID 3700 wrote to memory of 836	3700	ServiceModelReg.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\vsdbg.dll,#1
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ServiceModelReg.exe
  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ServiceModelReg.exe"
  2⤵
  - Checks processor information in registry
  - Suspicious use of WriteProcessMemory
  PID:3700
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    3⤵
    PID:3804
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    3⤵
    PID:836

C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
1⤵
PID:4708

C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
1⤵
PID:920

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

CURRENT

Path C:\Users\Admin\AppData\Local\Temp\GB_85.203.46.62_2026-08-08 14_49_53_4921b7cf-b8b0-42fb-8935-c449d23a49f0\decrypt_browser\Admin\Google Chrome\Default\Local Storage\leveldb\CURRENT
Size 16B
SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
MD5 46295cac801e5d4857d09837238a6394
SHA1 44e0fa1b517dbf802b18faf0785eeea6ac51594b
SHA512 8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23
MD5 SHA1 SHA512

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MANIFEST-000001

Path C:\Users\Admin\AppData\Local\Temp\GB_85.203.46.62_2026-08-08 14_49_53_4921b7cf-b8b0-42fb-8935-c449d23a49f0\decrypt_browser\Admin\Google Chrome\Default\Local Storage\leveldb\MANIFEST-000001
Size 41B
SHA256 f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4
MD5 5af87dfd673ba2115e2fcf5cfdb727ab
SHA1 d5b5bbf396dc291274584ef71f444f420b6056f1
SHA512 de34583a7dbafe4dd0dc0601e8f6906b9bc6a00c56c9323561204f77abbc0dc9007c480ffe4092ff2f194d54616caf50aecbd4a1e9583cae0c76ad6dd7c2375b
MD5 SHA1 SHA512

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memory/3700-9-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-8-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-15-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-14-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-13-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-12-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-11-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-10-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-0-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-16-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-6-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-3-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-5-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-2-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-17-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-4-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-1-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-116-0x0000000140000000-0x00000001400DA000-memory.dmp

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memory/3700-117-0x0000000140000000-0x00000001400DA000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads