4493d23c124ecf3a88041b1695f2c4b8ed2d7d014aca1d0521b682edc8aab665

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
22/07/2024, 12:48

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General

Target

2024-07-22_1602836209ee1e5f2131482a9c343180_bkransomware.exe
Size

288KB
MD5

1602836209ee1e5f2131482a9c343180
SHA1

3e729a8a064347a7903c7e957a2dd92a87e65fba
SHA256

4493d23c124ecf3a88041b1695f2c4b8ed2d7d014aca1d0521b682edc8aab665
SHA512

f18efa875ae571eba125b9860897a5dc9e3f0037a8a002d70608057803b9d0edc0596fc5eff5ccdeb9e1e1c374def74fe26cf9dc77e6d24577058e292c1dd8fa
SSDEEP

6144:hZMazIfMg+5GdoS+RhiXp31Ksy89jkb/thcRNpm3wz2CawY:hS0L1vRa1u8eQRPm3wScY

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4424	QAzFiYJepkcuCLi.exe
3168	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"	2024-07-22_1602836209ee1e5f2131482a9c343180_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	2024-07-22_1602836209ee1e5f2131482a9c343180_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3272	2024-07-22_1602836209ee1e5f2131482a9c343180_bkransomware.exe
Token: SeDebugPrivilege	3168	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3272 wrote to memory of 4424	3272	2024-07-22_1602836209ee1e5f2131482a9c343180_bkransomware.exe	84
PID 3272 wrote to memory of 4424	3272	2024-07-22_1602836209ee1e5f2131482a9c343180_bkransomware.exe	84
PID 3272 wrote to memory of 3168	3272	2024-07-22_1602836209ee1e5f2131482a9c343180_bkransomware.exe	85
PID 3272 wrote to memory of 3168	3272	2024-07-22_1602836209ee1e5f2131482a9c343180_bkransomware.exe	85
PID 3272 wrote to memory of 3168	3272	2024-07-22_1602836209ee1e5f2131482a9c343180_bkransomware.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-07-22_1602836209ee1e5f2131482a9c343180_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-22_1602836209ee1e5f2131482a9c343180_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3272
- C:\Users\Admin\AppData\Local\Temp\QAzFiYJepkcuCLi.exe
  C:\Users\Admin\AppData\Local\Temp\QAzFiYJepkcuCLi.exe
  2⤵
  - Executes dropped EXE
  PID:4424
- 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:3168

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
392KB

MD5
678c0a215781c43fb4ff42969daaa4b4

SHA1
2679b57c378cf98eb1518d8ae849ef4f5082df82

SHA256
0496b22421d1a51183b8b8923b67a8d79590b622b851432fcd62f5ff21f932ae

SHA512
5999db4bb6df88f5bb6df9c068dcd61e325077d1aac4203692509e9962b001d3a7318fca8c3418319b6d445a4271c0808e2312743e3ecac39dcdc2cc0f4741ac

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

Filesize
217KB

MD5
f8a38fd27da720881c0af1ac99b8c1ad

SHA1
2ed31938119e2ebdeb0f5539c985e9965aef72d7

SHA256
b2e32b3fa44b3a9a8fdfa906627355f6f48b4821929f9bce5ded2d07894361d4

SHA512
aafa05bc5bd68687b998fe4d9a619caecc65d14f317af7a05ac0ecab7e231891e8719029245dc84eddce20bdd4c0cc6f4ffafdf8200227746b28cc6628564495

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads