de981b663459889b86a75310b62da0031e819e7e4d3a13d1461343461ee6f1ac

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
05/06/2024, 16:28

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General

Target

2024-06-05_f7a09e801e2475caefdec432caa2a1eb_bkransomware.exe
Size

96KB
MD5

f7a09e801e2475caefdec432caa2a1eb
SHA1

d442aa68e9a10e46b517ab43635605032d4d19a2
SHA256

de981b663459889b86a75310b62da0031e819e7e4d3a13d1461343461ee6f1ac
SHA512

49669d712a2c1d7d469a33e598b8ac1859cdadf1e556bbf83e636f058fabd9a5dc8a25b7957ced194750b8d42f0efa3ad15bd6e4186051d675568877173dcb20
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT0xzcERQprTtyaF:ZhpAyazIlyazT2QEORpz

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2492	uizd0FvghjLKTch.exe
5020	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"	2024-06-05_f7a09e801e2475caefdec432caa2a1eb_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	2024-06-05_f7a09e801e2475caefdec432caa2a1eb_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4220	2024-06-05_f7a09e801e2475caefdec432caa2a1eb_bkransomware.exe
Token: SeDebugPrivilege	5020	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4220 wrote to memory of 2492	4220	2024-06-05_f7a09e801e2475caefdec432caa2a1eb_bkransomware.exe	82
PID 4220 wrote to memory of 2492	4220	2024-06-05_f7a09e801e2475caefdec432caa2a1eb_bkransomware.exe	82
PID 4220 wrote to memory of 5020	4220	2024-06-05_f7a09e801e2475caefdec432caa2a1eb_bkransomware.exe	84
PID 4220 wrote to memory of 5020	4220	2024-06-05_f7a09e801e2475caefdec432caa2a1eb_bkransomware.exe	84
PID 4220 wrote to memory of 5020	4220	2024-06-05_f7a09e801e2475caefdec432caa2a1eb_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-06-05_f7a09e801e2475caefdec432caa2a1eb_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_f7a09e801e2475caefdec432caa2a1eb_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4220
- C:\Users\Admin\AppData\Local\Temp\uizd0FvghjLKTch.exe
  C:\Users\Admin\AppData\Local\Temp\uizd0FvghjLKTch.exe
  2⤵
  - Executes dropped EXE
  PID:2492
- 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:5020

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
394KB

MD5
106fd4b0af320305d1a8af956f291d72

SHA1
1f734d2e4e712ea4aef84d3e0c541b7833f89da9

SHA256
8d7984b74cdad363ab91d0e92df3e3b80646ba57f28af7fa5fe2ff7d29541ef1

SHA512
e880114d22e3291ed1ccd0824b250e2e08f1e64accd2ee6da5607c49acd8cae8164bac92cf88158b041549abc73dd2381ab794c3c86b71816c381ea04ccaec61

Download Submit
C:\Users\Admin\AppData\Local\Temp\uizd0FvghjLKTch.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/2492-10-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads