be35f5d12f69248e853cf32fc0f33e0a0e1942643bf9de75a453eb8bb1a019bb

Analysis

max time kernel
93s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
08-06-2024 04:20

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General

Target

2024-06-08_5a82e5b86e3b104dfe388ecdba209384_bkransomware.exe
Size

168KB
MD5

5a82e5b86e3b104dfe388ecdba209384
SHA1

9ca1ca8f50dee5e3aa7a03659871e1488c3167bc
SHA256

be35f5d12f69248e853cf32fc0f33e0a0e1942643bf9de75a453eb8bb1a019bb
SHA512

7346718cfd0901db4112918d066de594e22f65dad8ae58a85b56ca89f46cf1165f1f8b9d09f2ae0d0bc7981112a416b86a3d0fe54590da364cec73e226332ed0
SSDEEP

3072:ZhpAyazIlyazTaMQWa0JoMpBL8ezJwCQ9Snl2uEfqIIQ:hZMazy0pBLVzJwfSnl2ukqIIQ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
208	8h2AoImytJzFRlW.exe
4700	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"	2024-06-08_5a82e5b86e3b104dfe388ecdba209384_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	2024-06-08_5a82e5b86e3b104dfe388ecdba209384_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	2024-06-08_5a82e5b86e3b104dfe388ecdba209384_bkransomware.exe
Token: SeDebugPrivilege	4700	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 208	2328	2024-06-08_5a82e5b86e3b104dfe388ecdba209384_bkransomware.exe	82
PID 2328 wrote to memory of 208	2328	2024-06-08_5a82e5b86e3b104dfe388ecdba209384_bkransomware.exe	82
PID 2328 wrote to memory of 4700	2328	2024-06-08_5a82e5b86e3b104dfe388ecdba209384_bkransomware.exe	83
PID 2328 wrote to memory of 4700	2328	2024-06-08_5a82e5b86e3b104dfe388ecdba209384_bkransomware.exe	83
PID 2328 wrote to memory of 4700	2328	2024-06-08_5a82e5b86e3b104dfe388ecdba209384_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-08_5a82e5b86e3b104dfe388ecdba209384_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_5a82e5b86e3b104dfe388ecdba209384_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Users\Admin\AppData\Local\Temp\8h2AoImytJzFRlW.exe
  C:\Users\Admin\AppData\Local\Temp\8h2AoImytJzFRlW.exe
  2⤵
  - Executes dropped EXE
  PID:208
- 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:4700

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
fc04e6a935952dc7f5876ebfdd916511

SHA1
490e062504ea57940d0e817f27af9b08036c9b6a

SHA256
944a4c51f59c59bd7852b84ecdc8b835fdb0b50001b118a287a28f48bd3218fd

SHA512
e6fd8c1c3f0b461f87994cfab0eab1d4fe95c1c7a852626f054c69905242ba51f7bd4687948f2a276200d5ef45cb66537df75546312049421e3c07d25c1052d8

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C:\Users\Admin\AppData\Local\Temp\8h2AoImytJzFRlW.exe

Filesize
97KB

MD5
0655a0af4a2ff9bf591f614ba8f5721f

SHA1
b10d53dccec179109aff61b86ecca65be816f3c4

SHA256
d1a473a0dd813bd3565b810dcb8ff8bc7907478a994c564d55200925894e0d32

SHA512
9051043e6711b1f1b73f4137a8e4c16362c6be5d6c01b15f0430920ce096adf0b9f6a344462aadc5c2847ab5c0d9682df13803351449462dc5dda6059319d45f

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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

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Downloads