c73f85ab26096509295e7575b6c16df40d6cc519b68e59e4cb7bf7e977a3fab2

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
29/04/2024, 20:51

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe
Size

626KB
MD5

99cfd60f0092b6b29c94acac70a956d9
SHA1

46551b99e54bea6f03dbbad8cd7ac22bff546776
SHA256

c73f85ab26096509295e7575b6c16df40d6cc519b68e59e4cb7bf7e977a3fab2
SHA512

e9080476b2f3d9bdae4fcfb477c4e79646d2ad588e11fa7dd39333bc7934975c52c09698e9cfa6aa1bd5315374de6bff8ff1c2f91937c20464cdf2472d971055
SSDEEP

12288:hS0AiwEPFuLO1TbUnGLwv7eTPYXYwChJwqtxsrSDC2Qf8/8M:DA8PFuaUnR7eTQYwyCHeff8M

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2332	CTS.exe
1904	tamG2l6x08CjC4t.exe

Loads dropped DLL 1 IoCs

pid	Process
1724	2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.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_99cfd60f0092b6b29c94acac70a956d9_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_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1724	2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe
Token: SeDebugPrivilege	2332	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 1904	1724	2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe	28
PID 1724 wrote to memory of 1904	1724	2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe	28
PID 1724 wrote to memory of 1904	1724	2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe	28
PID 1724 wrote to memory of 1904	1724	2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe	28
PID 1724 wrote to memory of 2332	1724	2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe	29
PID 1724 wrote to memory of 2332	1724	2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe	29
PID 1724 wrote to memory of 2332	1724	2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe	29
PID 1724 wrote to memory of 2332	1724	2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_99cfd60f0092b6b29c94acac70a956d9_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\tamG2l6x08CjC4t.exe
  C:\Users\Admin\AppData\Local\Temp\tamG2l6x08CjC4t.exe
  2⤵
  - Executes dropped EXE
  PID:1904
- 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:2332

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

Loading Replay Monitor...

Downloads

C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
\Users\Admin\AppData\Local\Temp\tamG2l6x08CjC4t.exe

Filesize
555KB

MD5
5f7f0277775bafd14afd0d5ad4309662

SHA1
04a09740e164817ceef2e3137e59c348c64ef26b

SHA256
4c06ef6e0f98a3df60f7cbc69c3413713a1a06848259cfe4ce62bc9066e83c29

SHA512
4f8c387fedcd905f5d9f2e2c0b6b91415b1c05ceab1153ed76817f61968747bd490660a16bb0c7ebbd2abc3950a7880b4db1eb8e2109f9822df0845dc0ead485

Download Submit
memory/1904-12-0x00000000009E0000-0x0000000000A6E000-memory.dmp

Filesize
568KB

Download
memory/1904-14-0x000007FEF5FA0000-0x000007FEF698C000-memory.dmp

Filesize
9.9MB

Download
memory/1904-15-0x000000001B020000-0x000000001B0A0000-memory.dmp

Filesize
512KB

Download
memory/1904-16-0x000007FEF5FA0000-0x000007FEF698C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads