846332f0278d229e17f6dc1daee7d46bd3107ed9a750439c17483fe6645cd9c8

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
09-07-2024 13:29

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General

Target

2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe
Size

395KB
MD5

a71894b58d7cbcf18d9907437b2d48e5
SHA1

2c5b0ec3543ba6efe6e9db9ba5fbfc9349140a41
SHA256

846332f0278d229e17f6dc1daee7d46bd3107ed9a750439c17483fe6645cd9c8
SHA512

157fb8cde65ff9cbe08d7b54eb31d297c0cca9313af8f6040c224add0a7b6b4b8d23e9dec50159ca00212591290e5d8f1d82cabbcdf376fd7b5b652c450622d9
SSDEEP

12288:hS0Qdvsc39h7JcmO4zEdoYiaqvtKaoHl6pw:DQxsc3/JcfdoY0vgaMkw

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2384	xTDgpHHb2ocLO8y.exe
2676	CTS.exe

Loads dropped DLL 1 IoCs

pid	Process
3016	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.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"	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_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	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3016	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe
Token: SeDebugPrivilege	2676	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 2384	3016	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	30
PID 3016 wrote to memory of 2384	3016	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	30
PID 3016 wrote to memory of 2384	3016	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	30
PID 3016 wrote to memory of 2384	3016	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	30
PID 3016 wrote to memory of 2676	3016	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	31
PID 3016 wrote to memory of 2676	3016	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	31
PID 3016 wrote to memory of 2676	3016	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	31
PID 3016 wrote to memory of 2676	3016	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Users\Admin\AppData\Local\Temp\xTDgpHHb2ocLO8y.exe
  C:\Users\Admin\AppData\Local\Temp\xTDgpHHb2ocLO8y.exe
  2⤵
  - Executes dropped EXE
  PID:2384
- 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:2676

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\Temp\xTDgpHHb2ocLO8y.exe

Filesize
395KB

MD5
6a42431853656d34e2c67a550a397bef

SHA1
a153f6cc5c55dda0ca67dd5db4831e2774fe1837

SHA256
c2b387b337ba7453537984bbe22ac0821d0be43cf902bde729a1a7c03db0e1a8

SHA512
d3bfc3eeb32a4b9e390bb2049711b25ccb85e253b21c4fefe634a9357fe05c3b1775e63ea9352ce1ccb99e1573cec1fff7629323c3ca83aedf043ae562cb2959

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
\Users\Admin\AppData\Local\Temp\xTDgpHHb2ocLO8y.exe

Filesize
324KB

MD5
7187ae605f4dce14bb23ea2623956335

SHA1
f7c1df33b875c98f41dcde24117d89d42d25b7ce

SHA256
9e2631c19b243c28b0980607ced2540e9447b1166572483475547c1a9dd4ac0e

SHA512
f64522e2fb6bb61884fe53c34e79b355efb9ec33c02b2cd67d729af7d763e7b3873a5c7ce6ac7bb4567e6bcf8c70cadbc66f511e8bb151ab05096a832032bc8f

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads