b761e7a37e711077a86ccf320c305d6e0461806fc794abc824df3f7d35dbd876

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-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
2972	CTS.exe
2144	iX2L9ejkfs3P1PN.exe

Loads dropped DLL 1 IoCs

pid	Process
1612	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.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	1612	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe
Token: SeDebugPrivilege	2972	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 2144	1612	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	28
PID 1612 wrote to memory of 2144	1612	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	28
PID 1612 wrote to memory of 2144	1612	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	28
PID 1612 wrote to memory of 2144	1612	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	28
PID 1612 wrote to memory of 2972	1612	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	29
PID 1612 wrote to memory of 2972	1612	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	29
PID 1612 wrote to memory of 2972	1612	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	29
PID 1612 wrote to memory of 2972	1612	2024-06-10_bd5d6bde1d3f7d864ee0966637f61574_bkransomware.exe	29

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⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1612
- C:\Users\Admin\AppData\Local\Temp\iX2L9ejkfs3P1PN.exe
  C:\Users\Admin\AppData\Local\Temp\iX2L9ejkfs3P1PN.exe
  2⤵
  - Executes dropped EXE
  PID:2144
- 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:2972

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:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
\Users\Admin\AppData\Local\Temp\iX2L9ejkfs3P1PN.exe

Filesize
143KB

MD5
38f108cddb6619fba80f8382d5227ece

SHA1
12fd277bf756f22cfae3043900e4aff8b9f05ed9

SHA256
8296fe257b8c34398e3f291764454ec3cd9cbe06d60989b632ef4ba6c73ae5dc

SHA512
3db732c23f10122c78cffc6b6a5b11836ade1a23f5c6f9a192f2be2fa99c5bd7afb7a9e29c5d518a888cdd2091f9ac41b244214be226152830e96f5ec2cca424

Download Submit
memory/2144-12-0x000007FEF55C3000-0x000007FEF55C4000-memory.dmp

Filesize
4KB

Download
memory/2144-14-0x0000000000B10000-0x0000000000B38000-memory.dmp

Filesize
160KB

Download
memory/2144-15-0x000007FEF55C0000-0x000007FEF5FAC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads