1974b7d3ee131e6fec3d8d83b4bccd6edf998862824ea716756e50b308ba350b

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-06-2024 18:40

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General

Target

2024-06-24_99bd3c077a924e3430b560427b0da40e_bkransomware.exe
Size

71KB
MD5

99bd3c077a924e3430b560427b0da40e
SHA1

d08c016c0575846c214f0caaf14da707fb9c0a8e
SHA256

1974b7d3ee131e6fec3d8d83b4bccd6edf998862824ea716756e50b308ba350b
SHA512

34b1c192ea91b38e58b8a109b03dfb043f947ccda2fa2c5c194c8559a1785414cd92d52db1233403fdc3fc6a16dc5f0cab848f9863d68ecf0e63e8e00f5371f2
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT4:ZhpAyazIlyazT4

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2832	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"	2024-06-24_99bd3c077a924e3430b560427b0da40e_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	2024-06-24_99bd3c077a924e3430b560427b0da40e_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1792	2024-06-24_99bd3c077a924e3430b560427b0da40e_bkransomware.exe
Token: SeDebugPrivilege	2832	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 2832	1792	2024-06-24_99bd3c077a924e3430b560427b0da40e_bkransomware.exe	80
PID 1792 wrote to memory of 2832	1792	2024-06-24_99bd3c077a924e3430b560427b0da40e_bkransomware.exe	80
PID 1792 wrote to memory of 2832	1792	2024-06-24_99bd3c077a924e3430b560427b0da40e_bkransomware.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-06-24_99bd3c077a924e3430b560427b0da40e_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-24_99bd3c077a924e3430b560427b0da40e_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1792
- 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:2832

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
b7324136b375303ac2a253947312cbda

SHA1
df16b14d75af7feec02d05fc47a07145660aa7e4

SHA256
49bd91966b59e7f9c2dcaf92be6258f865e0c1f75a57b7e1233199dfdc88d9ec

SHA512
788b82ae109ba4c16e8d4b9ad5b8e0cd25d0c46a7fa83a0d7a1f5ff57c3f7d44e803539914cbdc8cf9e45b934cd0c58283b4857b4191c7139a68907ba5ae6bf6

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C:\Users\Admin\AppData\Local\Temp\tTqY2DSE3RHWYyX.exe

Filesize
71KB

MD5
95877c4f1fea8621df46a657f8248b92

SHA1
5146433d4d9f8b2a6a8c94795717b7a112949195

SHA256
17bc1bf4096bcf222a02a6b9871c5c731c8f9c70681bbc24ab9ff6ec9c42a51d

SHA512
fa9229887545d74037e8c9ad4e63510e37929ed956245d4896f97e58fc47f23cc024302586ac584f48f9d122e1f9946b64629664cab62f190a884ec2811c6f0d

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

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Downloads