7f781b930315bdfcbd1832feec7e2896fb1986498157d253895e5bd285d87373

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
22/07/2024, 15:53

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General

Target

2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
Size

172KB
MD5

cbc833251bc03a569b83b78e268acd97
SHA1

3e140a2f507bd8609fdd576075e29de792114ee4
SHA256

7f781b930315bdfcbd1832feec7e2896fb1986498157d253895e5bd285d87373
SHA512

319e733aa718bcf46cb59e85a46d318a596b3763dcaf7c32581acfe8c513a2451fb579edb9c55474a9bad3d09c8c8a22f2e919dcc1135c288cd7299dace71b56
SSDEEP

3072:ZhpAyazIlyazTCKncoIhVA9xce4CLJaPQal7tn3P+Za4:hZMazbnhw+9xj1aYmWd

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3384	v3JaF7WMAnM4zRe.exe
4028	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"	2024-07-22_cbc833251bc03a569b83b78e268acd97_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	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4812	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
Token: SeDebugPrivilege	4028	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4812 wrote to memory of 3384	4812	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	85
PID 4812 wrote to memory of 3384	4812	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	85
PID 4812 wrote to memory of 4028	4812	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	86
PID 4812 wrote to memory of 4028	4812	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	86
PID 4812 wrote to memory of 4028	4812	2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Users\Admin\AppData\Local\Temp\v3JaF7WMAnM4zRe.exe
  C:\Users\Admin\AppData\Local\Temp\v3JaF7WMAnM4zRe.exe
  2⤵
  - Executes dropped EXE
  PID:3384
- 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:4028

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
bf0c94c03f05dd4a5ecd6b1036d1d485

SHA1
360ecc46bdcf1a77ff700c136ba08202b641b3a9

SHA256
80c41e5cd4e3ebfd5a57d83df46ef7888a247a96d9614012259bb85676c9ddf5

SHA512
3ea483b4a524b2c90ccacf26937ac7e887e3b193e51d7074d1485a3d06349b97eb98428deb150c4acda49122b96412ba016d1299487c720e1ae0617173ee0383

Download Submit
C:\Users\Admin\AppData\Local\Temp\v3JaF7WMAnM4zRe.exe

Filesize
172KB

MD5
ec3c19c19e10be852469cff5ef0a3e56

SHA1
f8a39b0796b95718bd6490dca0d22cdb92912ad3

SHA256
bde4f02689d15b1a714a1b93cebe3af25d8039b6535bb5d5adbcec94e1e1f193

SHA512
86b8e218f2106dcfaeb58082a70092613f43d2ffb1d8b9cb61436d9de60b1230e3448155469858b1c12ee55a5ec034e9d9502e34665c28898c00d4756bdc057f

Download Submit
C:\Users\Admin\AppData\Local\Temp\v3JaF7WMAnM4zRe.exe

Filesize
100KB

MD5
db697c943fcb215f757f9c22c907c568

SHA1
c57d891472f5ede8b1ee5d9bd6f5ad8fc8e9e5d7

SHA256
07c96337729e3c4c986e8f5660a97cb475c4c04842606be2654b37892af57de9

SHA512
bfa5c34d8c78015ccf96a2ef1c6d8f82157eb88680139bdbb51c55e3cd2a7c41bf364a364fd62b180b202cdf4f3d7d31c3710b8709c1d25a639bb00dfc97b646

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads