23617bd6da06e5cb76bd5d091c0d31a6213d49f546e5c008171b2ff17546e095

Analysis

max time kernel
93s
max time network
95s
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, 09:30

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General

Target

2024-05-09_7b68eb31d4ae28d7cf8a01d3871f7482_bkransomware.exe
Size

71KB
MD5

7b68eb31d4ae28d7cf8a01d3871f7482
SHA1

8040145e8713da59109dacf069f7a29045ce70d9
SHA256

23617bd6da06e5cb76bd5d091c0d31a6213d49f546e5c008171b2ff17546e095
SHA512

8e69302a3e97df479eb7eebb8ab957acb46af9439e2b7ad8254e6997d9c94d41f7d2551d952275b80ef2507d9846a088a2c430defd51bea418cda6d65fc50e19
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTj:ZRpAyazIliazTj

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4552	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_7b68eb31d4ae28d7cf8a01d3871f7482_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_7b68eb31d4ae28d7cf8a01d3871f7482_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3416	2024-05-09_7b68eb31d4ae28d7cf8a01d3871f7482_bkransomware.exe
Token: SeDebugPrivilege	4552	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3416 wrote to memory of 4552	3416	2024-05-09_7b68eb31d4ae28d7cf8a01d3871f7482_bkransomware.exe	81
PID 3416 wrote to memory of 4552	3416	2024-05-09_7b68eb31d4ae28d7cf8a01d3871f7482_bkransomware.exe	81
PID 3416 wrote to memory of 4552	3416	2024-05-09_7b68eb31d4ae28d7cf8a01d3871f7482_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-09_7b68eb31d4ae28d7cf8a01d3871f7482_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_7b68eb31d4ae28d7cf8a01d3871f7482_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3416
- 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:4552

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\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
31f494b4cd26e3b145c26b3f9f04e1bf

SHA1
bbb91dc05f01e8d906ff837e522700e4ba1ec95e

SHA256
55d4d5c43a6561a5e797281b18440ee9c093bba80c4dd32ba16aa2b2020323c9

SHA512
ec3856e2b75c501cbf6111fda92055a68cd0a9c44b29a2c8af2c006b510ddaa7a82ec4f1612b16bdc81e62b3f036d2bd9dc38b66c2e603fd916704c1fe62c062

Download Submit
C:\Users\Admin\AppData\Local\Temp\6IAJZc597Ef9rmx.exe

Filesize
71KB

MD5
8c134b01732dde1b0a202667227e2348

SHA1
456931d5e03ec654284f56cd9e2f5839411fe497

SHA256
b733f97193cb188fea87fafe7d950764961a92db340c85163088e3eb9ac1dec5

SHA512
1fd2383e5e7672417c3e9aebdb1f5956d70a1d40eda4257797b939e5de087d7291fcbf0c24c8dc13ce0145e52ef97eaf681cd3e1f4558f5971fd5a3e1946446f

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads