4238727b4f3bcbd586819ea37cafa2f0058e196ff8fc0fca04bb1f21295a97bb

Analysis

max time kernel
150s
max time network
154s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/08/2026, 11:11

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General

Target
2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe
Size 1.4MB
Sample260831-nascraszev
SHA256 4238727b4f3bcbd586819ea37cafa2f0058e196ff8fc0fca04bb1f21295a97bb
MD5 5604981eae66f7456ba6c3a05fab78f4
SHA1 ceadd540a9b2fc16afe12330ac2bc4abfd7bf644
SHA512 a64dbf64eabeac39a47b95ba7f2054ac5ce3efeec693acb834aa2b55086727cba8eb4b7744917c0e63b283654b63aa63b8c93ebff40511c89e6f48c53d352577
SSDEEP 24576:00ebMki9Dn1Ej6CoTybNDpBcGXKzmkrMfhT/sxHJYAuUsaiBEGkb0YNp3/SsY5:xWMki9D1Ej6+BkG6jIfhT/sxVu5d5kbe
TLSH
T15065121772E661FCE11AC078435BA1B77B377CC61A227CBF12E499702E9AE516F18B10
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

defense_evasion execution persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1452	2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe
4228	2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4046655672-1449839301-2197395821-1000\Software\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Users\\Admin\\AppData\\Local\\RuntimeBroker\\2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe\""	2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4046655672-1449839301-2197395821-1000\Software\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Users\\Admin\\AppData\\Local\\RuntimeBroker\\2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe\""	2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
6112	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1332	timeout.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 6112	1924	2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe	89
PID 6112 wrote to memory of 1332	6112	cmd.exe	91
PID 6112 wrote to memory of 4228	6112	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /C timeout /T 2 /NOBREAK >nul & start "" "C:\Users\Admin\AppData\Local\RuntimeBroker\2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:6112
- - C:\Windows\system32\timeout.exe
    timeout /T 2 /NOBREAK
    3⤵
    - Delays execution with timeout.exe
    PID:1332
- - C:\Users\Admin\AppData\Local\RuntimeBroker\2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe
    "C:\Users\Admin\AppData\Local\RuntimeBroker\2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe"
    3⤵
    - Executes dropped EXE
    PID:4228

C:\Users\Admin\AppData\Local\RuntimeBroker\2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe
"C:\Users\Admin\AppData\Local\RuntimeBroker\2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe"
1⤵
- Executes dropped EXE
- Adds Run key to start application
PID:1452

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe

Path C:\Users\Admin\AppData\Local\RuntimeBroker\2026-08-30_5604981eae66f7456ba6c3a05fab78f4_akira_cobalt-strike.exe
Size 1.4MB
SHA256 4238727b4f3bcbd586819ea37cafa2f0058e196ff8fc0fca04bb1f21295a97bb
MD5 5604981eae66f7456ba6c3a05fab78f4
SHA1 ceadd540a9b2fc16afe12330ac2bc4abfd7bf644
SHA512 a64dbf64eabeac39a47b95ba7f2054ac5ce3efeec693acb834aa2b55086727cba8eb4b7744917c0e63b283654b63aa63b8c93ebff40511c89e6f48c53d352577
SSDEEP 24576:00ebMki9Dn1Ej6CoTybNDpBcGXKzmkrMfhT/sxHJYAuUsaiBEGkb0YNp3/SsY5:xWMki9D1Ej6+BkG6jIfhT/sxVu5d5kbe
TLSH
T15065121772E661FCE11AC078435BA1B77B377CC61A227CBF12E499702E9AE516F18B10
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1452-37-0x00007FF72DAD0000-0x00007FF72DC37000-memory.dmp

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memory/1452-50-0x00007FF72DAD0000-0x00007FF72DC37000-memory.dmp

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memory/1924-2-0x0000000140000000-0x0000000140127000-memory.dmp

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memory/1924-11-0x00007FF6C6A20000-0x00007FF6C6B87000-memory.dmp

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memory/4228-36-0x00007FF72DAD0000-0x00007FF72DC37000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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