2e3121665cdbfce38397dd3bac37f9f39bc1855bd7001dd8079ef464c1ce49fc

Analysis

max time kernel
92s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2024 04:21

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General

Target

2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe
Size

96KB
MD5

1359d2fdab871eafae407b3b7f9c5514
SHA1

7bd60c4c3f302e150f96a05cc9f57e0d1e2015be
SHA256

2e3121665cdbfce38397dd3bac37f9f39bc1855bd7001dd8079ef464c1ce49fc
SHA512

2d368ebb29d54c4e05e184eb8f2e447762cf49210c2b8cb5ce48bdda20cae8f00f54b376eb95c644760abc2991de41bdcce098acea2186e0abe73dac3dd6df54
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTWE7dVzhjq9gJO:ZhpAyazIlyazTzdVzhjq9gQ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4552	Fslw6c13Jip2md6.exe
5012	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"	2024-07-01_1359d2fdab871eafae407b3b7f9c5514_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	2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1608	2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe
Token: SeDebugPrivilege	5012	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 4552	1608	2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe	81
PID 1608 wrote to memory of 4552	1608	2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe	81
PID 1608 wrote to memory of 5012	1608	2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe	83
PID 1608 wrote to memory of 5012	1608	2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe	83
PID 1608 wrote to memory of 5012	1608	2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Users\Admin\AppData\Local\Temp\Fslw6c13Jip2md6.exe
  C:\Users\Admin\AppData\Local\Temp\Fslw6c13Jip2md6.exe
  2⤵
  - Executes dropped EXE
  PID:4552
- 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:5012

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
d00a48e16ce1ad8045e4f4070e3d71f4

SHA1
e2013776325fa25cb7a35f6ec03ccf3bdefbd7f4

SHA256
b28ec8d3bc052eef6fe2d593554a35b05a549ed7d4ded32d718fa12c696098f1

SHA512
cf18e6bd2c7e545d8daaab63058910ee43867b915a22ca0dd403321a4b155c6b2bee9a7de442be19a3218c4cba154c365cfeabcdf1af64956763c63730857d69

Download Submit
C:\Users\Admin\AppData\Local\Temp\Fslw6c13Jip2md6.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/4552-10-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads