b761e7a37e711077a86ccf320c305d6e0461806fc794abc824df3f7d35dbd876

Analysis

max time kernel
93s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 10:39

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General

Target

2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe
Size

214KB
MD5

bd5d6bde1d3f7d864ee0966637f61574
SHA1

34f5f894a03a3c10dbf37354dee86dc9be78bc54
SHA256

b761e7a37e711077a86ccf320c305d6e0461806fc794abc824df3f7d35dbd876
SHA512

80dcc08a0680ebe12e79fdf413a1ec5614cb95db067fd4edfef6453d772d35b88c9b9ccf77223ae0abe19594d33cb03e4c9c652b6edc238f7d15fbcba3eb7181
SSDEEP

6144:hZMazApAuXw74K4heHmfMLQhE2QvHU1cBDM:hS0/uXwWeGfMLQe2QvHZDM

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
5072	2vccnAxCw6JS0EB.exe
3764	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"	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_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	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4660	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe
Token: SeDebugPrivilege	3764	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4660 wrote to memory of 5072	4660	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	81
PID 4660 wrote to memory of 5072	4660	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	81
PID 4660 wrote to memory of 3764	4660	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	83
PID 4660 wrote to memory of 3764	4660	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	83
PID 4660 wrote to memory of 3764	4660	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4660
- C:\Users\Admin\AppData\Local\Temp\2vccnAxCw6JS0EB.exe
  C:\Users\Admin\AppData\Local\Temp\2vccnAxCw6JS0EB.exe
  2⤵
  - Executes dropped EXE
  PID:5072
- 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:3764

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

Replay Monitor

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Downloads

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

Filesize
394KB

MD5
2d84b277bd1431505b0c49e7fbe45613

SHA1
10a2213dbbfe0a54ea342ef2e9381a368fe3573e

SHA256
92e9d41e8f2d2d456fdbf9210c2065fbd4c075935affee8e3efc7535a98bdc1c

SHA512
141715a6a4220716b6139e8a2539a84b1560d1327da6e8dcb83a1a40a6eeecafdd6ff5d114963f510fe1e55f36793f179e116601309731eedc3333a5e6d10d3e

Download Submit
C:\Users\Admin\AppData\Local\Temp\2vccnAxCw6JS0EB.exe

Filesize
214KB

MD5
647cd110b783d26c87dc623d458c2e49

SHA1
5f01857da222a9efb6aa9fe5b7205fb8f4bded49

SHA256
406ff00728ad79aec126db968faeb8b9e8416346636b5c1f9c3afe35c6cb736b

SHA512
03e363ae5f31d49810c9f5987785935bb63e6f9b55bf342fbd56d607ead7070443c9f91807f3e646726b5041f89b72e74f926033134c38c9ca5f20944e679399

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/5072-10-0x0000000000650000-0x0000000000678000-memory.dmp

Filesize
160KB

Download
memory/5072-16-0x00007FFE30350000-0x00007FFE30E11000-memory.dmp

Filesize
10.8MB

Download
memory/5072-8-0x00007FFE30353000-0x00007FFE30355000-memory.dmp

Filesize
8KB

Download
memory/5072-33-0x00007FFE30350000-0x00007FFE30E11000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads