299169bc7a4687aa3fd1f1fbaa951b8a75229840ce61a06677234b5bda46817a

Analysis

max time kernel
132s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
08/05/2024, 03:42

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General

Target

2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe
Size

71KB
MD5

04b8127757b255a0ddd8c439136249e2
SHA1

f55213963df1a849291d52767a652148a6f07e0b
SHA256

299169bc7a4687aa3fd1f1fbaa951b8a75229840ce61a06677234b5bda46817a
SHA512

ac162a538746d479bf6e35e682ce2eb51ec57e529329ddf23ac4a67fbffd81f715d73c954577ccf480f1a1db14da84cd95999c6a0d8a31d1570d8131221db496
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT3m:ZRpAyazIliazT2

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3252	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"	2024-05-08_04b8127757b255a0ddd8c439136249e2_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	2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3652	2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe
Token: SeDebugPrivilege	3252	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 3252	3652	2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe	84
PID 3652 wrote to memory of 3252	3652	2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe	84
PID 3652 wrote to memory of 3252	3652	2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3652
- 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:3252

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
392KB

MD5
caa490350e7ff566510d42e95635e332

SHA1
038edc03163f57a59cc28cdb7bcd5f347bc7937d

SHA256
3fad9a63769e27d3c4bf60e822075dd55aeebac24cef9924211b5790f0d08582

SHA512
28367f2cffa8b7652c577eb7692efa0e813802735d9298e0b2d715e2489ce8a93980ed295dff3fcaad836e4e6eebff8eb6dcef9d714f3858d4a2a51857ced940

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C:\Users\Admin\AppData\Local\Temp\QQz80ALtML4YJcR.exe

Filesize
71KB

MD5
a7050faaf6bfa2e400a6fe243835a0bf

SHA1
61817d403cfb51f26e205971452f6bc0442e8051

SHA256
244662c63a513a942fb7c366c549ecf9ed2f60bb82d55ee95d19b4e6ba315371

SHA512
b99ce9881a66e8d0ffefa774598885794a029ec77fc99dbb774455d13a9f0c489b7db0febe70ba38d9628ed6889f239eee5f51e0e74d4dc2b1cf5d6321ceb053

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads