824b105f9759660673334a4972aafa5c1da141972cebbb2eba1d543737a984c3

Analysis

max time kernel
137s
max time network
170s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/06/2024, 22:27

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General

Target

2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe
Size

71KB
MD5

ca67324f74fd9598267e995779dacf28
SHA1

0d2a8aad15de4ad9348d600b0f5587beabf6edee
SHA256

824b105f9759660673334a4972aafa5c1da141972cebbb2eba1d543737a984c3
SHA512

a0d72fec04254b577e322c4d6c0ea2bc22452270d24bfd104052387f7007de827046d660e25d9e47e761e49954fc60c6cc1dc6e6cc844ad0306aa26932995a34
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT0:ZhpAyazIlyazT0

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3300	CTS.exe

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

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5076	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe
Token: SeDebugPrivilege	3300	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5076 wrote to memory of 3300	5076	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe	91
PID 5076 wrote to memory of 3300	5076	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe	91
PID 5076 wrote to memory of 3300	5076	2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-28_ca67324f74fd9598267e995779dacf28_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5076
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  PID:3300

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=4340 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
1⤵
PID:1556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
789KB

MD5
ac0c58689787f1c379dbde58dd0a51de

SHA1
ec0a3e469977d7e469a800313bbe67aa94362617

SHA256
bf11d351fe85585fe664bdeecda86e2a96e5a5b28ca45e9a65a13dd80e25de5e

SHA512
825d516bb09bf26de6886ecb58c16baa375dea1174b62aab902bf3050835aecd878dc5e5dd56763abbbdd702e669fb3e12bc5abe35d7ca7d624829734092d791

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C:\Users\Admin\AppData\Local\Temp\TLgxWa1vTZWR7j0.exe

Filesize
71KB

MD5
a0dd5632be16e73c6343378dab77e6cb

SHA1
c9de63c132cd253efe45fcb6ae7265adb4275d23

SHA256
2719d6179666a4b1c077d873e18c9e05ed9dcef726a5cb3281fd2277f6b8bac3

SHA512
b2fbb55929a9bde596ee3d2f4b96e79f767c7ce5eef461206d353a59bd72fdd575660e98483e0a402a5c5667339bf67762f38b2261e1b287b50cdfdabc3ba7a2

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C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads