49910f201192767d7ed72e0259a9e0b23b8ccdffbed1c5c9a37ea1e7c6c02f0d

Analysis

max time kernel
130s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2024, 08:45

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General

Target

2024-06-27_6b9d83178cef14770cb0be706e417fed_bkransomware.exe
Size

214KB
MD5

6b9d83178cef14770cb0be706e417fed
SHA1

708348843b6c3b55982027a5efe6f263b193e59f
SHA256

49910f201192767d7ed72e0259a9e0b23b8ccdffbed1c5c9a37ea1e7c6c02f0d
SHA512

de495da3c1966796199934cfee9abadc12496e84f46aa5e6f813bd0dae5795eebf820b8fb873b52f714514cd3b590e7896cf346a60278416274a79029c32ef4d
SSDEEP

3072:ZhpAyazIlyazTv12M3SJDRjp2wIVAOtP6YWR665Ksyf5KmjO8sfHsmX6:hZMazrvyRO16YH6D6D8fMmq

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
984	eqXBElGKGJCsM2j.exe
3048	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"	2024-06-27_6b9d83178cef14770cb0be706e417fed_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	2024-06-27_6b9d83178cef14770cb0be706e417fed_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4472	2024-06-27_6b9d83178cef14770cb0be706e417fed_bkransomware.exe
Token: SeDebugPrivilege	3048	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4472 wrote to memory of 984	4472	2024-06-27_6b9d83178cef14770cb0be706e417fed_bkransomware.exe	82
PID 4472 wrote to memory of 984	4472	2024-06-27_6b9d83178cef14770cb0be706e417fed_bkransomware.exe	82
PID 4472 wrote to memory of 3048	4472	2024-06-27_6b9d83178cef14770cb0be706e417fed_bkransomware.exe	84
PID 4472 wrote to memory of 3048	4472	2024-06-27_6b9d83178cef14770cb0be706e417fed_bkransomware.exe	84
PID 4472 wrote to memory of 3048	4472	2024-06-27_6b9d83178cef14770cb0be706e417fed_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-06-27_6b9d83178cef14770cb0be706e417fed_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-27_6b9d83178cef14770cb0be706e417fed_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4472
- C:\Users\Admin\AppData\Local\Temp\eqXBElGKGJCsM2j.exe
  C:\Users\Admin\AppData\Local\Temp\eqXBElGKGJCsM2j.exe
  2⤵
  - Executes dropped EXE
  PID:984
- 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:3048

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
d84a6ff4f809b28dcfda1b91603f9f16

SHA1
44fb6ebbe0bef3f222dd5acb9dc8405a6e7e9415

SHA256
857566cbc01df01b8ef1806a9ede35290edc38f02707f9268a3b5d2a73e7eab9

SHA512
d1ede79f74b6e0e66c6d83fe7858eb2b638cdcd620c63ad1c9688c09598e4dbab51a0ed9c2b451085f097659292f7a32293c579c65c0bdd9387fe1b45ce7dcb5

Download Submit
C:\Users\Admin\AppData\Local\Temp\eqXBElGKGJCsM2j.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/984-12-0x0000000000850000-0x0000000000878000-memory.dmp

Filesize
160KB

Download
memory/984-14-0x00007FFB3CCB3000-0x00007FFB3CCB5000-memory.dmp

Filesize
8KB

Download
memory/984-23-0x00007FFB3CCB0000-0x00007FFB3D771000-memory.dmp

Filesize
10.8MB

Download
memory/984-33-0x00007FFB3CCB0000-0x00007FFB3D771000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads