45f5fb09b2bb63520849e5e8547753fff2f3bc35a64b004ce7e4acf860c16fb1

General

Target

2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe
Size

96KB
MD5

424dd3bc4897e581897af8345845f06b
SHA1

297debb68207163b359e6f0c0ff58133ad3b5adb
SHA256

45f5fb09b2bb63520849e5e8547753fff2f3bc35a64b004ce7e4acf860c16fb1
SHA512

93be5198b6594219373112fce088bdddd73c7eb71e057c5e2aebe79dd560a8869e114b54649c557315f90fb3f2cf993effd1ad21e632f85509d29d25993fe8d8
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT6/J93SRHgQvUm7UJNp5g:ZhpAyazIlyazT6R93OHpUmkJg

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1884	D4CTRxncK01X1Jl.exe
1036	CTS.exe

Loads dropped DLL 3 IoCs

pid	Process
1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe
1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe
2688	Process not Found

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"	2024-04-29_424dd3bc4897e581897af8345845f06b_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	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe
Token: SeDebugPrivilege	1036	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 1884	1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe	29
PID 1728 wrote to memory of 1884	1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe	29
PID 1728 wrote to memory of 1884	1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe	29
PID 1728 wrote to memory of 1884	1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe	29
PID 1728 wrote to memory of 1036	1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe	31
PID 1728 wrote to memory of 1036	1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe	31
PID 1728 wrote to memory of 1036	1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe	31
PID 1728 wrote to memory of 1036	1728	2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_424dd3bc4897e581897af8345845f06b_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\D4CTRxncK01X1Jl.exe
  C:\Users\Admin\AppData\Local\Temp\D4CTRxncK01X1Jl.exe
  2⤵
  - Executes dropped EXE
  PID:1884
- 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:1036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\D4CTRxncK01X1Jl.exe

Filesize
96KB

MD5
b6611a0bf01b42b695a3e2aed91da004

SHA1
ff234402cdaf71ee186f43d4dfc45da46e5fa297

SHA256
327fdc89ba011f96e7af6495b5540b17dcc8b1aee8c3dff02aaa82abd838f83f

SHA512
d846e95e53a4e93d5e6f071e2f41ed8c19305a303298fb7707354a31e993f5c22fcc23ba897338e7b41d6992c5aa8326d07e48f475b5ca04d71f03a1a4d373b3

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
\Users\Admin\AppData\Local\Temp\D4CTRxncK01X1Jl.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
memory/1884-15-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads