80c104fedbf0a9b95dc47907736d0bdcc0676cf5bb5be0dc362dbaa1b8e3263b

Analysis

max time kernel
91s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 22:22

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General

Target
2024-06-02_08ff847cdbd87b0338642ed2955e87b8_bkransomware.exe
Size 71KB
Sample240602-2aba5ahb5y
SHA256 80c104fedbf0a9b95dc47907736d0bdcc0676cf5bb5be0dc362dbaa1b8e3263b
MD5 08ff847cdbd87b0338642ed2955e87b8
SHA1 57cc4330fbe7421cdf7f971e2e2f2f8fff4383c3
SHA512 fc3f02371a4769653bca490e77f897d734248c7588dd491b4a1c060d7e0d3942c58e0eba6adc96d355db7a626117f5d4247d4c8fc868e495dbba7371a28eaf8e
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTr:ZhpAyazIlyazTr
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
864	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"	2024-06-02_08ff847cdbd87b0338642ed2955e87b8_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-06-02_08ff847cdbd87b0338642ed2955e87b8_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3576	2024-06-02_08ff847cdbd87b0338642ed2955e87b8_bkransomware.exe
Token: SeDebugPrivilege	864	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3576 wrote to memory of 864	3576	2024-06-02_08ff847cdbd87b0338642ed2955e87b8_bkransomware.exe	84
PID 3576 wrote to memory of 864	3576	2024-06-02_08ff847cdbd87b0338642ed2955e87b8_bkransomware.exe	84
PID 3576 wrote to memory of 864	3576	2024-06-02_08ff847cdbd87b0338642ed2955e87b8_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-06-02_08ff847cdbd87b0338642ed2955e87b8_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_08ff847cdbd87b0338642ed2955e87b8_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3576
- 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:864

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

excel.exe_Rules.xml

Path C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Size 395KB
SHA256 8846235fead842407ac60363124de9e16bf2fea8ded828f54469afac64479053
MD5 05c971ebac319d9565e00a18d679fb92
SHA1 3cb5626abd8757555a2f58702563040ef60839da
SHA512 3c0d8d9c1ff024cbe01ade291c3aedb28e8a4383845a8ead520307261d9f92098e701ab5c174be73058b842386dbc22c0560a0a2abd868db54b754bf7bfa271f
SSDEEP 12288:hS0QgzRFf0B2Qpt5ACKQMa75enkO/F2wq6F182:DQiHupt5ACUe9O/F2wvj
MD5 SHA1 SHA512 SSDEEP

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SuKRHY7SsxLCQ3F.exe

Path C:\Users\Admin\AppData\Local\Temp\SuKRHY7SsxLCQ3F.exe
Size 71KB
SHA256 7a08a9eccc0ced2dd104c629654dee0cf59c290034a24aa5a8283e28be463e24
MD5 120b4862ea4c434952d365bcc36a3d4d
SHA1 ac2889645345707eb98738fdcbc858131d3d56a4
SHA512 a25eaa1dd5b9663ba321e27e55661b60801cb9ae2a7b6d76f7e500130e0ee75e85b723df64b725ba78c67f55acf3da126eb695d28726c6635d6a0ebd4af294ae
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTM:ZhpAyazIlyazTM
MD5 SHA1 SHA512 SSDEEP

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CTS.exe

Path C:\Windows\CTS.exe
Size 71KB
SHA256 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
MD5 66df4ffab62e674af2e75b163563fc0b
SHA1 dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA512 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT:ZhpAyazIlyazT
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads