b69630f80922891e8c5e5ade7660528f9c6d9946187c0469bbbbbe1561fb26a1

Analysis

max time kernel
94s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
27-05-2024 23:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_bkransomware.exe
Size

96KB
MD5

a339daf4d1b98f97e09cb2c25b742a2b
SHA1

845a8d7ac6ec4c868515a5ae85dd807c21da5399
SHA256

b69630f80922891e8c5e5ade7660528f9c6d9946187c0469bbbbbe1561fb26a1
SHA512

c15904981f71f86ec2543e5c9284f5cd052c5b735a2ec998fc4c7ab0427dd93c19256ccf0aaaf9ab1ec2c5729624492a2d738a3a71681187d65481ce2835f1bf
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTt6EkARov6smy/4AFBtAW+5:ZhpAyazIlyazTt+6smy/jFBtAn5

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1352	ZbZh3n4HfsjQZ5O.exe
4340	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"	2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_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	2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3640	2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_bkransomware.exe
Token: SeDebugPrivilege	4340	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3640 wrote to memory of 1352	3640	2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_bkransomware.exe	82
PID 3640 wrote to memory of 1352	3640	2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_bkransomware.exe	82
PID 3640 wrote to memory of 4340	3640	2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_bkransomware.exe	84
PID 3640 wrote to memory of 4340	3640	2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_bkransomware.exe	84
PID 3640 wrote to memory of 4340	3640	2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_a339daf4d1b98f97e09cb2c25b742a2b_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3640
- C:\Users\Admin\AppData\Local\Temp\ZbZh3n4HfsjQZ5O.exe
  C:\Users\Admin\AppData\Local\Temp\ZbZh3n4HfsjQZ5O.exe
  2⤵
  - Executes dropped EXE
  PID:1352
- 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:4340

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
394KB

MD5
56d7306bf40d62b6f83fbd3f70b4befb

SHA1
81f268c06eeb83fb665d73298be33332c78415cc

SHA256
4af79d9cebef32b65bbda3f24a5fc0ed553cc272c246cafec9710aae4e36206d

SHA512
68ee5e47b65b79eb81f861b56d0cc5f029ecad5428f75aebd41a11fec26fd5cf0b4dfc22a9cf69a6db4a313584e713c5a1afdbfadee3b6774c80ccd226871f21

Download Submit
C:\Users\Admin\AppData\Local\Temp\ZbZh3n4HfsjQZ5O.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/1352-10-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads