2cc7cd8a4d11f5533d92c92fbd43e4ca03c44f209328e08fcd66312369c9f091

Analysis

max time kernel
134s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
05/06/2024, 07:37

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General

Target

2024-06-05_b1c82e7b785ca222c0e03d19bca12f6b_bkransomware.exe
Size

76KB
MD5

b1c82e7b785ca222c0e03d19bca12f6b
SHA1

ac79419e5fb8127db54fcf03c8cb2d6ee9914dd1
SHA256

2cc7cd8a4d11f5533d92c92fbd43e4ca03c44f209328e08fcd66312369c9f091
SHA512

91ed6e89a76e63a55922a6f4aa67a54f8f49334b97cb759fe4b83f9abb6a0eda6dca336b70667cf9e91277c9d90c5e67402864b1c60a2003d8aaf04c716a000d
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTAcRwy2:ZhpAyazIlyazTbRwy2

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1152	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"	2024-06-05_b1c82e7b785ca222c0e03d19bca12f6b_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	2024-06-05_b1c82e7b785ca222c0e03d19bca12f6b_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3144	2024-06-05_b1c82e7b785ca222c0e03d19bca12f6b_bkransomware.exe
Token: SeDebugPrivilege	1152	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3144 wrote to memory of 1152	3144	2024-06-05_b1c82e7b785ca222c0e03d19bca12f6b_bkransomware.exe	82
PID 3144 wrote to memory of 1152	3144	2024-06-05_b1c82e7b785ca222c0e03d19bca12f6b_bkransomware.exe	82
PID 3144 wrote to memory of 1152	3144	2024-06-05_b1c82e7b785ca222c0e03d19bca12f6b_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-05_b1c82e7b785ca222c0e03d19bca12f6b_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_b1c82e7b785ca222c0e03d19bca12f6b_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3144
- 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:1152

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

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Downloads

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

Filesize
394KB

MD5
dea3f346f34ea38195f84f8485a76490

SHA1
82cf1f57226994c197ecbbef59564b7438695227

SHA256
9fda1a1d27eede4831ed8b940b9c42f3222ca770c9311db7efa4beb207e2eef4

SHA512
dbd482bdb96ae3166324d3a0d2ad15d2c47ec258b8c8b2ece73964dd84e065195a653daf6f949a0057517736cc7fbcad209432e0514f921b63ea09d001b151cd

Download Submit
C:\Users\Admin\AppData\Local\Temp\QgU8b6W0jd32Tw7.exe

Filesize
76KB

MD5
635b9af2ae31ce32d8706110a80378a6

SHA1
bd6e75fddc2360b5748f1cae9ba25de93e9dd2a2

SHA256
22bbfe8d86da88e7257eb41307fe44d5cef250f7cc2c35b8de87512a3788ffe7

SHA512
f1a84ba58c97bd55b571b076a2591bcbb8f6234b4eeb566194c67c461b73b280128f7f48a4ecb58af49366ddb32136622a550d41a7ab71e36dab6af2a5112d1e

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads