77b29e4163f1b177d410a29eb82889bf26d7f25271c59ae08e930d8be62a7dce

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2024, 10:24

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General

Target

2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_bkransomware.exe
Size

96KB
MD5

21fa9baff8f2dc06bb7c7ceb7dd18f60
SHA1

e6622a7b52832af654877705ce5a4dc36758c07e
SHA256

77b29e4163f1b177d410a29eb82889bf26d7f25271c59ae08e930d8be62a7dce
SHA512

c7833ab71a67a0cab28e14baf66b92f2c1c9b7f3c9865020731d1c270e91693b3b2255fcadef0a39a590eac72e18c340f6654f70f439a59cc83c6477d6b0d241
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTPiaPY2lwDxVXV:ZhpAyazIlyazTPioiHXV

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
448	B09RsqcjHneNU6C.exe
4348	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"	2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_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	2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1804	2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_bkransomware.exe
Token: SeDebugPrivilege	4348	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1804 wrote to memory of 448	1804	2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_bkransomware.exe	82
PID 1804 wrote to memory of 448	1804	2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_bkransomware.exe	82
PID 1804 wrote to memory of 4348	1804	2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_bkransomware.exe	84
PID 1804 wrote to memory of 4348	1804	2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_bkransomware.exe	84
PID 1804 wrote to memory of 4348	1804	2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-27_21fa9baff8f2dc06bb7c7ceb7dd18f60_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1804
- C:\Users\Admin\AppData\Local\Temp\B09RsqcjHneNU6C.exe
  C:\Users\Admin\AppData\Local\Temp\B09RsqcjHneNU6C.exe
  2⤵
  - Executes dropped EXE
  PID:448
- 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:4348

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\excel.exe_Rules.xml

Filesize
394KB

MD5
e81101e771de8282472bdbc7fbd5e8a1

SHA1
d3218f51ac3827e5db6a1b8cde93bfdb29c4c2aa

SHA256
1c278dd7ca5e5680c013b02ea5518a7cfc5e5a5d973211e2275d4a649e9bbbfd

SHA512
4b56baee2a84c8f52bc1fecb1b8459fa4453f396b42413a64caec4c9c1f176868aea0099c573320ff5d85f1c0e47d95c06907990c49f232829c05f1220115c2d

Download Submit
C:\Users\Admin\AppData\Local\Temp\B09RsqcjHneNU6C.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/448-8-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads