8453191bee4c8e7dc19a57ff35e0e84f7920452e6232114816de3eb5e67c0f1b

General

Target

2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe
Size

262KB
MD5

07b12e38b1412cbee148b19d2c542aa9
SHA1

12bb6a3d5f5f90fbd64e19b3a10a48a0898bf7bb
SHA256

8453191bee4c8e7dc19a57ff35e0e84f7920452e6232114816de3eb5e67c0f1b
SHA512

eef36365fbac5d6c6dd358e11c89dae038a2ac84b764cd2cd8600245a022990757edcdad4912b29baf7a1476618f52924ee4355601b90f17da7dec18dbc02461
SSDEEP

6144:xZ8az9oSlSejnlZ5DljaXWFSfl2HfjB/C9JZav9QbMBON:xC0CSlVjnBDlKWFg2/jhCm9hON

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

DaHsqwmwdx7lYxe.exeCTS.exe

pid process

540 DaHsqwmwdx7lYxe.exe
3272 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

pid	process
540	DaHsqwmwdx7lYxe.exe
3272	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-24_07b12e38b1412cbee148b19d2c542aa9_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

Processes:

2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 3452 2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe
Token: SeDebugPrivilege 3272 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	3452	2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe
Token: SeDebugPrivilege	3272	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe

description	pid	process	target process
PID 3452 wrote to memory of 540	3452	2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe	DaHsqwmwdx7lYxe.exe
PID 3452 wrote to memory of 540	3452	2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe	DaHsqwmwdx7lYxe.exe
PID 3452 wrote to memory of 540	3452	2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe	DaHsqwmwdx7lYxe.exe
PID 3452 wrote to memory of 3272	3452	2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe	CTS.exe
PID 3452 wrote to memory of 3272	3452	2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe	CTS.exe
PID 3452 wrote to memory of 3272	3452	2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_07b12e38b1412cbee148b19d2c542aa9_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Users\Admin\AppData\Local\Temp\DaHsqwmwdx7lYxe.exe
  C:\Users\Admin\AppData\Local\Temp\DaHsqwmwdx7lYxe.exe
  2⤵
  - Executes dropped EXE
  PID:540
- 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:3272

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1416 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:2900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

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
789KB

MD5
dbfaafcb4088866f498b86103cc929ca

SHA1
f51ddb68aa88622d608a2115abdc1d3685285575

SHA256
fcefd35df89608fb562065346f6143ed9ddbd2512a273e00f160c6af8ab898c7

SHA512
1ad28bb865db1b836f3f4eabf51d5f2e07f2f0dc424498eb5ff9b3ae597a85a03b05fd27700a48ac22cd19d7dbc26005e7ed5a37a62b4906fc1f23522047896e

Download Submit
C:\Users\Admin\AppData\Local\Temp\DaHsqwmwdx7lYxe.exe

Filesize
191KB

MD5
94a363cd532d88ac33997c25657a19b5

SHA1
a98f1a8361d0183651c0ef457b9ac4339e429bea

SHA256
13b98844b2fa4a39a4d8ebb414fc79450d5ab4f0c8f5141ac06d40b2a0431ea4

SHA512
3b1c87a67f63e4276453ec1e322f0c13896dd0524ef35f4e4037a481ce354feaa98440f85b784c0b90a900c59ef115654f687457180ea433ea0100427f5c26f5

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads