647e76c1886e506afee41c40a57610608ea5f4b0b90297885a397711711885a4

General

Target

2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe
Size

321KB
MD5

1ba40881ebca925560490936326b6646
SHA1

d3bddb2c789e41dcd1177e51029ac1c1d96ce149
SHA256

647e76c1886e506afee41c40a57610608ea5f4b0b90297885a397711711885a4
SHA512

0de5cdd3ea6651eef5a32c928013d7bf7e56a2f8cb841ec688c07c515beb6a48f6e05d9ecf042a765bcd114595406a1d7398108177b0a7a21ace0cb338f1b443
SSDEEP

6144:hZMazEalAbpeqw2bquN2W67jeWnBitjt2TwA0mgRoitrPna4Y:hS0NKbpTw2bUbZnEvC0HRlPa4Y

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
2252	5sYYZg7BKSr2b0S.exe
2396	CTS.exe
1440	Process not Found

Loads dropped DLL 1 IoCs

pid	Process
2240	2024-08-22_1ba40881ebca925560490936326b6646_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"	2024-08-22_1ba40881ebca925560490936326b6646_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	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2240	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe
Token: SeDebugPrivilege	2396	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2252	2240	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe	30
PID 2240 wrote to memory of 2252	2240	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe	30
PID 2240 wrote to memory of 2252	2240	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe	30
PID 2240 wrote to memory of 2252	2240	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe	30
PID 2240 wrote to memory of 2396	2240	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe	31
PID 2240 wrote to memory of 2396	2240	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe	31
PID 2240 wrote to memory of 2396	2240	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe	31
PID 2240 wrote to memory of 2396	2240	2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-22_1ba40881ebca925560490936326b6646_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\5sYYZg7BKSr2b0S.exe
  C:\Users\Admin\AppData\Local\Temp\5sYYZg7BKSr2b0S.exe
  2⤵
  - Executes dropped EXE
  PID:2252
- 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:2396

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
\Users\Admin\AppData\Local\Temp\5sYYZg7BKSr2b0S.exe

Filesize
250KB

MD5
9386c7ffb682c69eadb492071138f495

SHA1
cd4cda7c97645a9ce694f9543b989e5fb898bbe7

SHA256
a4c297fc0b96651ebb71b15398025f80d1f6f592330792ba3eb01d9cd56f9f99

SHA512
9b7c2ee269d6f6f33f8656d9e3958036b441246304dce499e9ada4c7dc844a8d4b42deafc5e1d25dc50d069393f0ce9cdc5765a7ca7b3393511d1defba4f7d21

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads