9dba025eae42a0332374d1f2e6c28dd3db6140ee2e30eacb1f45c1e6952d6b5e

Analysis

max time kernel
129s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04/05/2024, 02:28

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General

Target

2024-05-04_793c19d1b1924506d07f20a7f5221d9b_bkransomware.exe
Size

71KB
MD5

793c19d1b1924506d07f20a7f5221d9b
SHA1

a40b74ddac18599e3fbe01abee0d4439e24c6dd4
SHA256

9dba025eae42a0332374d1f2e6c28dd3db6140ee2e30eacb1f45c1e6952d6b5e
SHA512

2d934cc17375d4da37ed4ce11e69420b0eaf34598ce20cb879836468f736eae392a6ec9b112a3bbb3a6c8594e85484cc8c2958a8306528912d1f3f84f5260b2e
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTu:ZhpAyazIlyazTu

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4332	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"	2024-05-04_793c19d1b1924506d07f20a7f5221d9b_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	2024-05-04_793c19d1b1924506d07f20a7f5221d9b_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	2024-05-04_793c19d1b1924506d07f20a7f5221d9b_bkransomware.exe
Token: SeDebugPrivilege	4332	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 4332	4948	2024-05-04_793c19d1b1924506d07f20a7f5221d9b_bkransomware.exe	83
PID 4948 wrote to memory of 4332	4948	2024-05-04_793c19d1b1924506d07f20a7f5221d9b_bkransomware.exe	83
PID 4948 wrote to memory of 4332	4948	2024-05-04_793c19d1b1924506d07f20a7f5221d9b_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-04_793c19d1b1924506d07f20a7f5221d9b_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_793c19d1b1924506d07f20a7f5221d9b_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4948
- 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:4332

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
393KB

MD5
d75b78847a619b59258e3f55811cebc2

SHA1
7d901433a286d1b812982a5fbb769b31231d5765

SHA256
af3b2875e08fde0e08328540b3c3590e564ef160a5fdedf0d2910beb103f0d3b

SHA512
38c8433b97b1d6acd62872c51ca96dfc6205c388e16b826f6703ac188102d21336626d5069b036c3d1f1d81d5c4e3a6b861e46057d8989c659ee3551831c33b0

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C:\Users\Admin\AppData\Local\Temp\QP59tV5aLkPoF5l.exe

Filesize
71KB

MD5
f179d3af0639021e2da7ea725af0e13c

SHA1
4501f7b3f37b16ce4b1da3900d67ddce9eff38ad

SHA256
8f6788b066238017da55eaca463bcef5e07dad2b3a875eaaf71f71bac20c6721

SHA512
461c8087450d3cd41393072e57063b16fe3af1cb0f115f44058891cb0d62671840b055c3d9120fb2af98237903ec97973acc9c9bca9690a6b9d2a1d73d5933df

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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