bf48dd5c4b6891e881f0f827419767e298781c43a05b3d129cf151db6257fb75

Analysis

max time kernel
91s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
15-06-2024 13:04

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General

Target

2024-06-15_89d4440ada92acf3644baf270f8da12b_bkransomware.exe
Size

144KB
MD5

89d4440ada92acf3644baf270f8da12b
SHA1

ecd497269b2cfb72f413cbc06139a27eaef48315
SHA256

bf48dd5c4b6891e881f0f827419767e298781c43a05b3d129cf151db6257fb75
SHA512

a1972ee79fc9339a1be08c53d644529ac795da7b8b981102b303c4982d7275ff80cb394991311bab00a279efdba56300ff0c49ff58c1815df912cbed085bf453
SSDEEP

3072:ZhpAyazIlyazT/7LWE3/aPA39UqsfHQt1915y:hZMazrZvFtUqsP6Y

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
376	fPk1ztB7SfFV8ZA.exe
3792	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"	2024-06-15_89d4440ada92acf3644baf270f8da12b_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	2024-06-15_89d4440ada92acf3644baf270f8da12b_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2036	2024-06-15_89d4440ada92acf3644baf270f8da12b_bkransomware.exe
Token: SeDebugPrivilege	3792	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 376	2036	2024-06-15_89d4440ada92acf3644baf270f8da12b_bkransomware.exe	84
PID 2036 wrote to memory of 376	2036	2024-06-15_89d4440ada92acf3644baf270f8da12b_bkransomware.exe	84
PID 2036 wrote to memory of 3792	2036	2024-06-15_89d4440ada92acf3644baf270f8da12b_bkransomware.exe	85
PID 2036 wrote to memory of 3792	2036	2024-06-15_89d4440ada92acf3644baf270f8da12b_bkransomware.exe	85
PID 2036 wrote to memory of 3792	2036	2024-06-15_89d4440ada92acf3644baf270f8da12b_bkransomware.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-06-15_89d4440ada92acf3644baf270f8da12b_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_89d4440ada92acf3644baf270f8da12b_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Local\Temp\fPk1ztB7SfFV8ZA.exe
  C:\Users\Admin\AppData\Local\Temp\fPk1ztB7SfFV8ZA.exe
  2⤵
  - Executes dropped EXE
  PID:376
- 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:3792

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\Microsoft\Office\16.0\msoia.exe_Rules.xml

Filesize
71KB

MD5
2779f384159c56afea3812d2f325e2c4

SHA1
a6de05db719ad7d3c33d77fd59a8a3d551def8cc

SHA256
be5ce14faa567d2fad03c65ff0a2d046fc69744d15187c01c445531b2c3bd8c3

SHA512
6c0ff93e9d1d1bce281494540379b397572a20356f82ee914ec03c614c8e147d863d86b428e7276108a01f0085654774088528f1c3e54e1e47feb3f17a84638c

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C:\Users\Admin\AppData\Local\Temp\fPk1ztB7SfFV8ZA.exe

Filesize
73KB

MD5
2ffc9a24492c0a1af4d562f0c7608aa5

SHA1
1fd5ff6136fba36e9ee22598ecd250af3180ee53

SHA256
69828c857d4824b9f850b1e0597d2c134c91114b7a0774c41dffe33b0eb23721

SHA512
03806d162931b1dcf036a51e753ff073a43664491a3cd2e649e55dd77d5e910f7bcf1e217eb0889ef606457b679428640e975ee227de941a200f652417bc6d5d

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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