2b349842584fac2df9e833e6a90f5f098432027529ccf4884969df9ab1734bc9

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 12:54

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General

Target

2024-05-10_cc21521bfca2a6379f829be4a5a10868_bkransomware.exe
Size

71KB
MD5

cc21521bfca2a6379f829be4a5a10868
SHA1

45ab731815dd37c3215c22fc43f365c86b9abdef
SHA256

2b349842584fac2df9e833e6a90f5f098432027529ccf4884969df9ab1734bc9
SHA512

5b1b7a3aee3caaa9079efdc868223ad9b05bb9716910f125738a5c0d1ab89e4f358ec94c0e574a08011f73464078a15660493fbb0f2306e691ff60162e295d8f
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT9:ZhpAyazIlyazT9

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3672	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"	2024-05-10_cc21521bfca2a6379f829be4a5a10868_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	2024-05-10_cc21521bfca2a6379f829be4a5a10868_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3192	2024-05-10_cc21521bfca2a6379f829be4a5a10868_bkransomware.exe
Token: SeDebugPrivilege	3672	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3192 wrote to memory of 3672	3192	2024-05-10_cc21521bfca2a6379f829be4a5a10868_bkransomware.exe	82
PID 3192 wrote to memory of 3672	3192	2024-05-10_cc21521bfca2a6379f829be4a5a10868_bkransomware.exe	82
PID 3192 wrote to memory of 3672	3192	2024-05-10_cc21521bfca2a6379f829be4a5a10868_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-10_cc21521bfca2a6379f829be4a5a10868_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_cc21521bfca2a6379f829be4a5a10868_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3192
- 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:3672

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
392KB

MD5
3dcb710bb6675b18964e7c2ccc40e62a

SHA1
88e53fbe57541f9c18cd554d36b6fc791a8cfa99

SHA256
91122b39d4e74e938a39b9fe7ce39a96c8053321e067bf41ba4f649b81b93b0c

SHA512
9ed35e74b20ca13c1f3170f3e5faa457b0cafa86ebad48152e18e91b4d8eea1cbcc9185d8df9d388f63153e4cb163406e0212221dafd03ca7d974a714c5800d5

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

Filesize
71KB

MD5
6b06857e5c710617906a5f3348440b52

SHA1
1ee728cf6b175db0a43a79c99f14c53d88bed434

SHA256
66408bfe13a0ddb7ff0b8c90c3b61cb307688fae1479363a7715b2e0cd4beb05

SHA512
fde7453222dad7df5230fd4c6e7f649eb51c1fc5ecfd84df4c422317decef5730608b8d351036834760e49507d41e581cc975b0755586d8490220d57d13d7e0d

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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