7f781b930315bdfcbd1832feec7e2896fb1986498157d253895e5bd285d87373

Analysis

max time kernel
14s
max time network
19s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
22/07/2024, 15:53

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General

Target

2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
Size

172KB
MD5

cbc833251bc03a569b83b78e268acd97
SHA1

3e140a2f507bd8609fdd576075e29de792114ee4
SHA256

7f781b930315bdfcbd1832feec7e2896fb1986498157d253895e5bd285d87373
SHA512

319e733aa718bcf46cb59e85a46d318a596b3763dcaf7c32581acfe8c513a2451fb579edb9c55474a9bad3d09c8c8a22f2e919dcc1135c288cd7299dace71b56
SSDEEP

3072:ZhpAyazIlyazTCKncoIhVA9xce4CLJaPQal7tn3P+Za4:hZMazbnhw+9xj1aYmWd

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
1760	BlQXP4Z2bQM0uYe.exe
2444	CTS.exe
1352	Process not Found

Loads dropped DLL 2 IoCs

pid	Process
1972	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
2704	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"	2024-07-22_cbc833251bc03a569b83b78e268acd97_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	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1972	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
Token: SeDebugPrivilege	2444	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 1760	1972	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	29
PID 1972 wrote to memory of 1760	1972	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	29
PID 1972 wrote to memory of 1760	1972	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	29
PID 1972 wrote to memory of 1760	1972	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	29
PID 1972 wrote to memory of 2444	1972	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	31
PID 1972 wrote to memory of 2444	1972	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	31
PID 1972 wrote to memory of 2444	1972	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	31
PID 1972 wrote to memory of 2444	1972	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-22_cbc833251bc03a569b83b78e268acd97_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:1972
- C:\Users\Admin\AppData\Local\Temp\BlQXP4Z2bQM0uYe.exe
  C:\Users\Admin\AppData\Local\Temp\BlQXP4Z2bQM0uYe.exe
  2⤵
  - Executes dropped EXE
  PID:1760
- 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:2444

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\Temp\BlQXP4Z2bQM0uYe.exe

Filesize
172KB

MD5
b25d8a851e60950fdf945f3ce6dc4fdf

SHA1
c62172f40dbf3cc9cff45cbd9a8f7df4fe66c4a0

SHA256
758d866d297cd8c5e0975b6da78777ae620d9432aca291b5c78793bc1748e1cc

SHA512
c66bf9d75b0e7d6fea7c267aa5f09884e7b4746bc2704b8ff476f349f54d51ad51c4e4efb49e4d3c168caee108c6d4bb871aef3d35287595c6235def563b730d

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
\Users\Admin\AppData\Local\Temp\BlQXP4Z2bQM0uYe.exe

Filesize
100KB

MD5
db697c943fcb215f757f9c22c907c568

SHA1
c57d891472f5ede8b1ee5d9bd6f5ad8fc8e9e5d7

SHA256
07c96337729e3c4c986e8f5660a97cb475c4c04842606be2654b37892af57de9

SHA512
bfa5c34d8c78015ccf96a2ef1c6d8f82157eb88680139bdbb51c55e3cd2a7c41bf364a364fd62b180b202cdf4f3d7d31c3710b8709c1d25a639bb00dfc97b646

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads