24691a41f843d176ce18fafe53783a3b4e4f3417b4ea3c45ca17cad40c1d299d

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24-04-2024 22:31

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General

Target

2024-04-24_999fa60faf4f736b234bc71f74a5bb61_bkransomware.exe
Size

71KB
MD5

999fa60faf4f736b234bc71f74a5bb61
SHA1

ba86aca4f80422b083ff41db78ad21d2e4bf92a4
SHA256

24691a41f843d176ce18fafe53783a3b4e4f3417b4ea3c45ca17cad40c1d299d
SHA512

8def6ee9aa4ed3552a17849b69a0bc964ba315d1c632b5a6180798576fbedd057e2588e58e282685825093158a13737d9e3a7f0612806ee8fe0a952e9eab633f
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTU:ZhpAyazIlyazTU

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3132	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"	2024-04-24_999fa60faf4f736b234bc71f74a5bb61_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-04-24_999fa60faf4f736b234bc71f74a5bb61_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	184	2024-04-24_999fa60faf4f736b234bc71f74a5bb61_bkransomware.exe
Token: SeDebugPrivilege	3132	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 184 wrote to memory of 3132	184	2024-04-24_999fa60faf4f736b234bc71f74a5bb61_bkransomware.exe	91
PID 184 wrote to memory of 3132	184	2024-04-24_999fa60faf4f736b234bc71f74a5bb61_bkransomware.exe	91
PID 184 wrote to memory of 3132	184	2024-04-24_999fa60faf4f736b234bc71f74a5bb61_bkransomware.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-24_999fa60faf4f736b234bc71f74a5bb61_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_999fa60faf4f736b234bc71f74a5bb61_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:184
- 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:3132

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\msoia.exe_Rules.xml

Filesize
71KB

MD5
51a72c33511a705dd047ecbdf6386b77

SHA1
77432db15a35b166c897661afcfc4ceb4d0db4bc

SHA256
143b0d125cd3bda3f1e9dbc114fce1b50b526073868caec3f8690beb768bfea8

SHA512
801b303da199386713210f931acc512ab1872b720d3890e33715678720aa42a71618a9158aaae40ec646e197ebbbc3b875092083a1c69a758ee060afee3b69f5

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C:\Users\Admin\AppData\Local\Temp\KFzFLt9CMjFgaL7.exe

Filesize
71KB

MD5
221b96d5785cd166ecc61ae7aea816d7

SHA1
9e92924e1d1e0c8bfe05531f30eaba6267268057

SHA256
94de277f8c9a74bcb3d8dabaac8c262a2fc0189063a942a0ae50f4a72b3caee7

SHA512
6809936eb6afb2ba0b357d5bff47f73d803c3e13caeb4b21375679866390098805cdccb025f368f2beb6ff90903f1aa36f74269fa2c4ae5b1363aea43f665730

Download Submit
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

Replay Monitor

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Downloads