564bded93fef228fe65c8699df43be1c8187e6a2ab92884d878b284bc76f8b9b

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
03/05/2024, 10:42

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General

Target

2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe
Size

214KB
MD5

3f49917174cabe36df91223337531089
SHA1

1bc873296afcb461566b8a173cc4896f4dafe278
SHA256

564bded93fef228fe65c8699df43be1c8187e6a2ab92884d878b284bc76f8b9b
SHA512

9e1284bf2641db7e570be55a3e6d2eeecdb993107b21b7eb14cc82b8bf426d24fb04ab1be7f404fb348733c924d229e5ec8226767644b67c7890cf36c2935ce0
SSDEEP

3072:ZhpAyazIlyazTp0H+iIlIJ6+8+cYbmmRdhV/IbiVMmQzy94GSu/BcclsL76w:hZMaz10eiIe6+ZCmR5w+2moql/FmH6w

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4808	hczbk2Kp03R6IEV.exe
2888	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3748	2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe
Token: SeDebugPrivilege	2888	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3748 wrote to memory of 4808	3748	2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe	82
PID 3748 wrote to memory of 4808	3748	2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe	82
PID 3748 wrote to memory of 2888	3748	2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe	83
PID 3748 wrote to memory of 2888	3748	2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe	83
PID 3748 wrote to memory of 2888	3748	2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_3f49917174cabe36df91223337531089_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3748
- C:\Users\Admin\AppData\Local\Temp\hczbk2Kp03R6IEV.exe
  C:\Users\Admin\AppData\Local\Temp\hczbk2Kp03R6IEV.exe
  2⤵
  - Executes dropped EXE
  PID:4808
- 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:2888

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
394KB

MD5
698025394c5486ce11f481cd381e057a

SHA1
791bb61b6fa8a9d002cf6a0f9c61faf8f322de0c

SHA256
f525db433fae1101ea03fc26ba0a7ed971faae2944ea04ebee5c010c56fe58a7

SHA512
0f4d7eb65ff85f4aed470658a235ccbc401f8f9925dc352e82cdcc6ec77175c1df5901836dffa738cd0e1a92b7d6c299917e6b508696f94f166d62a62c4dc02e

Download Submit
C:\Users\Admin\AppData\Local\Temp\hczbk2Kp03R6IEV.exe

Filesize
143KB

MD5
c583d768336377e263ed3de978da7c6e

SHA1
2c48977d57dfe983781ae622056588233d7d67ee

SHA256
54836a96884e0e9b30b1ff5b3ece61ce17dd472a4b09137296cd7915ec4a0fac

SHA512
284adabd0b025057d4f43e860b9cb64fd9505439c658cf011b87fcce5b15c6d6ebeae1134373c48401b559bdb465e882798127edb7c0fbbba59f225f85150b93

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/4808-10-0x00000000002A0000-0x00000000002C8000-memory.dmp

Filesize
160KB

Download
memory/4808-11-0x00007FFADBFD3000-0x00007FFADBFD5000-memory.dmp

Filesize
8KB

Download
memory/4808-19-0x00007FFADBFD0000-0x00007FFADCA91000-memory.dmp

Filesize
10.8MB

Download
memory/4808-35-0x00007FFADBFD0000-0x00007FFADCA91000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads