83cb9c1d4aa0e0daf7e73c0ff2f789e91d06b009dc966a88db7d70ff11c56b18

Analysis

max time kernel
92s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 10:27

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General

Target
2024-06-03_38cb18fefc88c9cfdf1b3dcdf6f19280_bkransomware.exe
Size 71KB
Sample240603-mg4tpace48
SHA256 83cb9c1d4aa0e0daf7e73c0ff2f789e91d06b009dc966a88db7d70ff11c56b18
MD5 38cb18fefc88c9cfdf1b3dcdf6f19280
SHA1 a93fb206ab96b3a3a4bd2d2d271e065ff8d6df2f
SHA512 52216058a5b5ccb7fa17ff84891f6008d76d9b0a7368f808dc646b0dbfdcc9b7d8a0915b40f3e3bac4f560c39d4c573a63f26f7f73604072768be2e04ff0d80f
SSDEEP 1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTtcJ:ZRpAyazIliazTtcJ
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2924	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"	2024-06-03_38cb18fefc88c9cfdf1b3dcdf6f19280_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	2024-06-03_38cb18fefc88c9cfdf1b3dcdf6f19280_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2124	2024-06-03_38cb18fefc88c9cfdf1b3dcdf6f19280_bkransomware.exe
Token: SeDebugPrivilege	2924	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2924	2124	2024-06-03_38cb18fefc88c9cfdf1b3dcdf6f19280_bkransomware.exe	83
PID 2124 wrote to memory of 2924	2124	2024-06-03_38cb18fefc88c9cfdf1b3dcdf6f19280_bkransomware.exe	83
PID 2124 wrote to memory of 2924	2124	2024-06-03_38cb18fefc88c9cfdf1b3dcdf6f19280_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-03_38cb18fefc88c9cfdf1b3dcdf6f19280_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_38cb18fefc88c9cfdf1b3dcdf6f19280_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2124
- 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:2924

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 394KB
SHA256 968da2f78199020089666a0aff4b779433efa0553419b8cb85417c6fce09edd1
MD5 88cf79c48bb1abc5020e67854d4f8165
SHA1 5a9407478d4bfd22a6f4633ad6b39f6bb0f1d2a0
SHA512 e8d654b586940159f8d3257ad03d6fe4344fffc70257a9bd43c5058305344b97df161d89f94291d08b44d4452c9b4026db0bc59ffa91b3134505007d1203508a
SSDEEP 6144:xZ8aze4rLVaVmKZoHklG/mag41Z/LAZinkcq6d1tjXFCG9BAFeFJ:xC0rIVmcoHkl6/016rHC9+J
MD5 SHA1 SHA512 SSDEEP

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p0Z3mpabEup7x7P.exe

Path C:\Users\Admin\AppData\Local\Temp\p0Z3mpabEup7x7P.exe
Size 71KB
SHA256 7ced266448324a28b40b82213a3f930f412f957e7f10ac611e47bef77f22a541
MD5 08ada24b4fa488939f8d71a86371907b
SHA1 3c9efe7352831274edd2192b85f074642f18eca4
SHA512 c95c94e725d489c848d522cbcbdad84130faf726f110a0564b4fb43daa69ecce4c522ace525c733d319271ae02a1da0c06de693c26ec269dfede6216bd150eb9
SSDEEP 1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT2:ZRpAyazIliazT2
MD5 SHA1 SHA512 SSDEEP

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CTS.exe

Path C:\Windows\CTS.exe
Size 71KB
SHA256 b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
MD5 f9d4ab0a726adc9b5e4b7d7b724912f1
SHA1 3d42ca2098475924f70ee4a831c4f003b4682328
SHA512 22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432
SSDEEP 1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT:ZRpAyazIliazT
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