d801b67f8b5ee1fd9a883756bf2515434880b52a6232f59c377ba88fdc42af90

General

Target

2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe
Size

918KB
MD5

e486cc9bd900567fc44273f7d716e9a0
SHA1

7019449445b1a4484aef30704b2f846a2f0c4e01
SHA256

d801b67f8b5ee1fd9a883756bf2515434880b52a6232f59c377ba88fdc42af90
SHA512

ab71c32591950b8dc8ca21a3d73d36bcacd3e56622209da6d4e60d8af53f4eef8b87a7ba078072f7f62f524406e0b87145ce6903ebf106aaa51da93c129741f8
SSDEEP

24576:DCinrKrk8l4PUGArGUWGifscVBcwZvXYPiJFWzbQO6XGM:DC2azkUGArqGCD3CeY/QORM

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
4068	9ypSmzh6x5gtgZl.exe
4784	CTS.exe
1452	9ypSmzh6x5gtgZl.exe

Loads dropped DLL 1 IoCs

pid	Process
1452	9ypSmzh6x5gtgZl.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"	2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	220	2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe
Token: SeDebugPrivilege	4784	CTS.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 220 wrote to memory of 4068	220	2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe	84
PID 220 wrote to memory of 4068	220	2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe	84
PID 220 wrote to memory of 4068	220	2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe	84
PID 220 wrote to memory of 4784	220	2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe	85
PID 220 wrote to memory of 4784	220	2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe	85
PID 220 wrote to memory of 4784	220	2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe	85
PID 4068 wrote to memory of 1452	4068	9ypSmzh6x5gtgZl.exe	86
PID 4068 wrote to memory of 1452	4068	9ypSmzh6x5gtgZl.exe	86
PID 4068 wrote to memory of 1452	4068	9ypSmzh6x5gtgZl.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_e486cc9bd900567fc44273f7d716e9a0_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:220
- C:\Users\Admin\AppData\Local\Temp\9ypSmzh6x5gtgZl.exe
  C:\Users\Admin\AppData\Local\Temp\9ypSmzh6x5gtgZl.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4068
- - C:\Windows\Temp\{8564F32C-E302-4B94-B5B5-427EB2520528}\.cr\9ypSmzh6x5gtgZl.exe
    "C:\Windows\Temp\{8564F32C-E302-4B94-B5B5-427EB2520528}\.cr\9ypSmzh6x5gtgZl.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\9ypSmzh6x5gtgZl.exe" -burn.filehandle.attached=540 -burn.filehandle.self=548
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:1452
- 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:4784

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

Query Registry

1

T1012

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
394KB

MD5
2e345c36bd13fe4c157e7b86fe2cfd20

SHA1
407637ebbbe484181ac9910faa72058f7c4bedc4

SHA256
8efec5c142dad37ce1aea4317c86fd2c8a323ed0f880de44253868ee96f42647

SHA512
b9995eebeff54b5bdaa131b5b7c806084eebe1761975861e9491aecbf19bdd8d51c3b085da233cfd8b5da945c6b1533fc62d991ff6a8b4eebe2988a09f94573e

Download Submit
C:\Users\Admin\AppData\Local\Temp\9ypSmzh6x5gtgZl.exe

Filesize
847KB

MD5
29bf0d271cc659ddd598c564e3e9adb5

SHA1
7f21ce21bc79ca6df7a27b0090cdb75be75302d3

SHA256
550962c4268923bf764797577346b6922493b925b8d17565186bf4b74295193c

SHA512
db2a9874aebf6ed6026ee4e8cde71d124706dc269e072d9cbdd715429e4decb84413289eed3f0fbc2ba80a2a25e4f0376dc08f30e1cd566c1974bc84a1535823

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
C:\Windows\Temp\{805B5A4D-1640-4C6D-A7BE-43B436EB4E72}\.ba\PythonBA.dll

Filesize
650KB

MD5
67c295f6b2a53365885879907f4aca36

SHA1
0c8e4f9e5af43f0f4c9f42b23c9c19a33011c29a

SHA256
560739d8eb7d23641260ac5950e8693d376b1714b6ae1e202e74e7e2216ff961

SHA512
e8eccf168976a86d5a2bd4be4bb05bd8971afa1f2b3fcd460aac7eda431da0b021b96db71be270be433aa4b2347003dc9e69c43a67c0a7422c8b9a21068a8bb9

Download Submit
C:\Windows\Temp\{805B5A4D-1640-4C6D-A7BE-43B436EB4E72}\.ba\SideBar.png

Filesize
50KB

MD5
888eb713a0095756252058c9727e088a

SHA1
c14f69f2bef6bc3e2162b4dd78e9df702d94cdb4

SHA256
79434bd1368f47f08acf6db66638531d386bf15166d78d9bfea4da164c079067

SHA512
7c59f4ada242b19c2299b6789a65a1f34565fed78730c22c904db16a9872fe6a07035c6d46a64ee94501fbcd96de586a8a5303ca22f33da357d455c014820ca0

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads