d557f404f21e8f51e56b4d5c55ae1f3266673b54862735c93f20317895e8afae

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 22:03

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-09_79eb6b10609220e9d92f3b58a4ecbd9d_bkransomware.exe
Size

74KB
MD5

79eb6b10609220e9d92f3b58a4ecbd9d
SHA1

3aa77f81235b4b29658ac1f583a83efffb65e2cb
SHA256

d557f404f21e8f51e56b4d5c55ae1f3266673b54862735c93f20317895e8afae
SHA512

ebdecb4e283e00ad4ff44b1cf105261847b292761fc12605590720a1a22f73c0aca99aff3b650458355d56816ad22a6b5c24b969c2abbd7f1b8e7de2b556e5ed
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTckqy:ZhpAyazIlyazTj

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4296	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"	2024-05-09_79eb6b10609220e9d92f3b58a4ecbd9d_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	2024-05-09_79eb6b10609220e9d92f3b58a4ecbd9d_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4112	2024-05-09_79eb6b10609220e9d92f3b58a4ecbd9d_bkransomware.exe
Token: SeDebugPrivilege	4296	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4112 wrote to memory of 4296	4112	2024-05-09_79eb6b10609220e9d92f3b58a4ecbd9d_bkransomware.exe	82
PID 4112 wrote to memory of 4296	4112	2024-05-09_79eb6b10609220e9d92f3b58a4ecbd9d_bkransomware.exe	82
PID 4112 wrote to memory of 4296	4112	2024-05-09_79eb6b10609220e9d92f3b58a4ecbd9d_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-09_79eb6b10609220e9d92f3b58a4ecbd9d_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_79eb6b10609220e9d92f3b58a4ecbd9d_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4112
- 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:4296

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

Loading Replay Monitor...

Downloads

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

Filesize
395KB

MD5
31a048d1ed0841713a2249ffea75e654

SHA1
d7f27a8ad38c6e58ad16a06a1a0eb9613978f323

SHA256
cf5aaf706a1c258c255e4e5adf3c0c9aff20957aaf71f02f93226e941dc1ff99

SHA512
9d1596120136805860496e12be1a5b6164a7d3c1193d6eaeb5bc6c6e370076cee0c09867e0e3ff038d67d0c9ea353a620886fd75fb175bb85dfca4014fadd26e

Download Submit
C:\Users\Admin\AppData\Local\Temp\0dmE5Uf1wYbnIK1.exe

Filesize
74KB

MD5
f8a6cacb1c774cc69d4b3571221ad194

SHA1
bfa783990214f337c392b014916343d3d5adbf6f

SHA256
2a401250275e008b62bf5627b18591b0a1bac2ec0d2329a12b8ad6efaf2c579e

SHA512
9a69007f9c0d27b10eff910ff4e08e84421a4fbcab8716a99a8de052b362444308937f957c3d75f8e5152045e1442d521b7d98ccfaa6b2af27e7a1bbe11d6790

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads