ac3eef8abb727da5dfeb3e43259f10122bebdee40916dd16badbbcebda1eb30a

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
29/04/2024, 05:06

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General

Target

2024-04-29_b8d03d1d107a581c7d62e6a07c8b4e20_bkransomware.exe
Size

71KB
MD5

b8d03d1d107a581c7d62e6a07c8b4e20
SHA1

27087cc2e8c8661960b64e930a638ceda5ef0ca1
SHA256

ac3eef8abb727da5dfeb3e43259f10122bebdee40916dd16badbbcebda1eb30a
SHA512

4e5e41e70fd9619ee2a0289608b20697261de2a9e3ab3dede367488cd6999a80b28d92ee17768b736f0730b87d43e7b56a31905f4d5c3c97672292f644ab4391
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT5U:ZhpAyazIlyazTO

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2004	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"	2024-04-29_b8d03d1d107a581c7d62e6a07c8b4e20_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	2024-04-29_b8d03d1d107a581c7d62e6a07c8b4e20_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2656	2024-04-29_b8d03d1d107a581c7d62e6a07c8b4e20_bkransomware.exe
Token: SeDebugPrivilege	2004	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 2004	2656	2024-04-29_b8d03d1d107a581c7d62e6a07c8b4e20_bkransomware.exe	28
PID 2656 wrote to memory of 2004	2656	2024-04-29_b8d03d1d107a581c7d62e6a07c8b4e20_bkransomware.exe	28
PID 2656 wrote to memory of 2004	2656	2024-04-29_b8d03d1d107a581c7d62e6a07c8b4e20_bkransomware.exe	28
PID 2656 wrote to memory of 2004	2656	2024-04-29_b8d03d1d107a581c7d62e6a07c8b4e20_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-29_b8d03d1d107a581c7d62e6a07c8b4e20_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_b8d03d1d107a581c7d62e6a07c8b4e20_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2656
- 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:2004

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\Temp\66Yn71sb30cZoUw.exe

Filesize
71KB

MD5
29df9a7498f15b2ecfab3aabf9679de0

SHA1
728adee8fe043ab9ab191a294ac844fea15e841d

SHA256
69f6f23d68ed01ffbbcb9a32d0f9084edd5b32a99bf412ec1859bd730854e614

SHA512
7c308c2dd466458bb4c0802a798e78dd0ff11e089d0c0306f097becfe6a43036543d170cb65b58d7dacaef9386fb8a8f6dd81ec287b0d84a73fbff75dd66a547

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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