4ea18354a47b2fec3bb65e50a638a7b685770e57511c67347b7df3a4c2cde806

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/04/2024, 06:35

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General

Target

2024-04-25_b9445bacc993a4c2c27d1b247a0dd24a_bkransomware.exe
Size

71KB
MD5

b9445bacc993a4c2c27d1b247a0dd24a
SHA1

e5ba1636b5308d70b2a415ad3578f9aee5d1e29d
SHA256

4ea18354a47b2fec3bb65e50a638a7b685770e57511c67347b7df3a4c2cde806
SHA512

77f3e8dc06004cb1e9298c6ef78bd68a9e845c0388615ebed1078b9d2dd76820427529722f3ec5c25d1b06c138fe0aa7ebaaf5fdc4bb11f24e17f4002bb48acb
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT0Z:ZhpAyazIlyazT2

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2672	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"	2024-04-25_b9445bacc993a4c2c27d1b247a0dd24a_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	2024-04-25_b9445bacc993a4c2c27d1b247a0dd24a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	2024-04-25_b9445bacc993a4c2c27d1b247a0dd24a_bkransomware.exe
Token: SeDebugPrivilege	2672	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2672	1968	2024-04-25_b9445bacc993a4c2c27d1b247a0dd24a_bkransomware.exe	28
PID 1968 wrote to memory of 2672	1968	2024-04-25_b9445bacc993a4c2c27d1b247a0dd24a_bkransomware.exe	28
PID 1968 wrote to memory of 2672	1968	2024-04-25_b9445bacc993a4c2c27d1b247a0dd24a_bkransomware.exe	28
PID 1968 wrote to memory of 2672	1968	2024-04-25_b9445bacc993a4c2c27d1b247a0dd24a_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-25_b9445bacc993a4c2c27d1b247a0dd24a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_b9445bacc993a4c2c27d1b247a0dd24a_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968
- 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:2672

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\Temp\P7F5D7CfFXcYmzT.exe

Filesize
642B

MD5
de7abb3ccb013afea1d37a76316d3b3b

SHA1
6563ea198322196137d85093e15756546d4bfb74

SHA256
14cc972585466677f9368f397e92a8abcdee8df080385ec239bcdc5510c76d2c

SHA512
287bdde6e5e764b1b4230a40f22bf394215684c50243a16f342b2be1dff10a257424beda48eff031c6bd87478f82bd9e4d4881a9ae3b9c0a6ef022265760d09e

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C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads