567004f268c541a8d5c089114b521a62888cd904b86b3afbdbb6a10621af4d5b

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
19/06/2024, 15:49

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General

Target

2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe
Size

131KB
MD5

678ab1704dc84773ad0fb6d38ac3b856
SHA1

ad5f30cfa9c271bcd824d6d5ca12eaf411ddef4e
SHA256

567004f268c541a8d5c089114b521a62888cd904b86b3afbdbb6a10621af4d5b
SHA512

c158bbe2a3a5495b8836888ef9f116339756a052b7609e492074898fe403e28a755318ada0d0e156f4cebf29c378b317b10b916695bc2ed5f3df67a31d2bcd5b
SSDEEP

3072:ZhpAyazIlyazT1397ZmWGTkyeZKzGjByoz76ky:hZMazZ397AnTkXZKCjQoyL

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4328	FEdy8bUDsBoXFxa.exe
4092	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"	2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_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	2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	236	2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe
Token: SeDebugPrivilege	4092	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 236 wrote to memory of 4328	236	2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe	80
PID 236 wrote to memory of 4328	236	2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe	80
PID 236 wrote to memory of 4328	236	2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe	80
PID 236 wrote to memory of 4092	236	2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe	81
PID 236 wrote to memory of 4092	236	2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe	81
PID 236 wrote to memory of 4092	236	2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-19_678ab1704dc84773ad0fb6d38ac3b856_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:236
- C:\Users\Admin\AppData\Local\Temp\FEdy8bUDsBoXFxa.exe
  C:\Users\Admin\AppData\Local\Temp\FEdy8bUDsBoXFxa.exe
  2⤵
  - Executes dropped EXE
  PID:4328
- 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:4092

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
394KB

MD5
912ec31d84067d333358a0fcbae1981f

SHA1
a812ac970d183bc33a18b496d91c2bcb654d17c9

SHA256
a26d655efb058d39de8fdd64ea17271625ed9d4d3ae23f074eb844d65ec263dc

SHA512
14a4869f3104c9c3d6badb39b0169112362f1c38a3ff8991de6a3f7632f2e1d1689184503b582c2df1da6b8dbe1fb8c6a40efb9554e7d6e94ea2531da586f102

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C:\Users\Admin\AppData\Local\Temp\FEdy8bUDsBoXFxa.exe

Filesize
60KB

MD5
ed0fde686788caec4f2cb1ec9c31680c

SHA1
81ae63b87eaa9fa5637835d2122c50953ae19d34

SHA256
e362670f93cdd952335b1a41e5529f184f2022ea4d41817a9781b150b062511c

SHA512
d90d5e74a9be23816a93490ed30c0aae9f7f038a42bd14aa2ce78e95967b4aabd848f006f00ade619c9976755658d45aa0f5b6d5babbbb2d59a6ed3a3a12ac6b

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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

Replay Monitor

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Downloads