5b9a210ee33d08fae97034cd4bc7f3e7a680af3cd6d60e9d319e5088d6e742be

Analysis

max time kernel
55s
max time network
49s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30-04-2024 03:26

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General

Target

2024-04-30_88584f484d4822dba788e8af41a82c7a_bkransomware.exe
Size

96KB
MD5

88584f484d4822dba788e8af41a82c7a
SHA1

e7d6c54fe7016604fbdc111f739a403111ebe520
SHA256

5b9a210ee33d08fae97034cd4bc7f3e7a680af3cd6d60e9d319e5088d6e742be
SHA512

c42c7ec97f368d0238b7ec530f73189b5f7e6aa02e3641832fc644dcb4f5e0adf26a4d909fa3ddb3d9b5cd94a135407f079d29b4778aba166c1044fcf8d13837
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTIWiTCBMWnBTpIm:ZhpAyazIlyazTIBWBMWgm

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1728	NCFaHIapc3G8G7G.exe
760	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"	2024-04-30_88584f484d4822dba788e8af41a82c7a_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	2024-04-30_88584f484d4822dba788e8af41a82c7a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3620	2024-04-30_88584f484d4822dba788e8af41a82c7a_bkransomware.exe
Token: SeDebugPrivilege	760	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3620 wrote to memory of 1728	3620	2024-04-30_88584f484d4822dba788e8af41a82c7a_bkransomware.exe	83
PID 3620 wrote to memory of 1728	3620	2024-04-30_88584f484d4822dba788e8af41a82c7a_bkransomware.exe	83
PID 3620 wrote to memory of 760	3620	2024-04-30_88584f484d4822dba788e8af41a82c7a_bkransomware.exe	85
PID 3620 wrote to memory of 760	3620	2024-04-30_88584f484d4822dba788e8af41a82c7a_bkransomware.exe	85
PID 3620 wrote to memory of 760	3620	2024-04-30_88584f484d4822dba788e8af41a82c7a_bkransomware.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-30_88584f484d4822dba788e8af41a82c7a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_88584f484d4822dba788e8af41a82c7a_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3620
- C:\Users\Admin\AppData\Local\Temp\NCFaHIapc3G8G7G.exe
  C:\Users\Admin\AppData\Local\Temp\NCFaHIapc3G8G7G.exe
  2⤵
  - Executes dropped EXE
  PID:1728
- 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:760

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
380KB

MD5
bac80a9c00fd4399d85acfd52b3339f3

SHA1
d96dcb17270c9bf5d80909be7055c1014bbb9bae

SHA256
92954dca42f182b56dad53d10201c31cb684f0c791b2a48a134037b870b28bd4

SHA512
d8b486860a80fe369890e757eb40184fdb5622dad2f913d49b63a72aa34c1a5e1a7b28c85105c945ba5199ade273b508318fb3c9eb52a2a15d25dbb6ea8d2e2a

Download Submit
C:\Users\Admin\AppData\Local\Temp\NCFaHIapc3G8G7G.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/1728-13-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads