6369bfcf59a962f01d90141bee77c448179ce3cf3625757ca38f4cecbed05cbe

Analysis

max time kernel
62s
max time network
52s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 10:52

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General

Target

2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe
Size

72KB
MD5

2e60fb10e1a3d700d4ae4541bd6c2be7
SHA1

eb775cd404c28f0a1ab59f467d490dca52e61e6d
SHA256

6369bfcf59a962f01d90141bee77c448179ce3cf3625757ca38f4cecbed05cbe
SHA512

2c0bc7b6f29225ec91c84d8a4c42880c19ad1987a2cfd6263bda1695bfc2394354f931e79a08a2b65080de27777c39e340e380f1d30a4c4e7283aed115e952b6
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTS:ZhpAyazIlyazTS

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

3940 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

pid	process
3940	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_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

Processes:

2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 3232 2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe
Token: SeDebugPrivilege 3940 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	3232	2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe
Token: SeDebugPrivilege	3940	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe

description	pid	process	target process
PID 3232 wrote to memory of 3940	3232	2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe	CTS.exe
PID 3232 wrote to memory of 3940	3232	2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe	CTS.exe
PID 3232 wrote to memory of 3940	3232	2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_2e60fb10e1a3d700d4ae4541bd6c2be7_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3232

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:3940

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
8eee7235734df3b79f13a55c4e2047ce

SHA1
642f0097d1e184cf4a691f49e0ffdb02934e3427

SHA256
a8573af2eefcedc1f8dcb2d040c7ebcaa6ea1fb9642639718dd078071476c6b9

SHA512
7f565e8d1d402f67ef9d0f0b527a0c4cd037a3846cb3d42f8dc3fa50497fa5a4c201903cfc95d191cae07567db8d85009229f2fe32dbea67158d397d8b390628

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C:\Users\Admin\AppData\Local\Temp\Cc99tXpQR9932af.exe

Filesize
72KB

MD5
545d245fdaf90bd753fb602f9ea0a767

SHA1
4355e473e51b651dadc493c1f463f408a7f777ba

SHA256
98e03f7c8dc205c80ff78e5f236bebd420990c87ab82832eaa06052387ff2d06

SHA512
e93c9f8afe48e374f2f89992f110743a0d3f368c73f0acd9d62fd17351dc32f7985a6d4aa8e9b56632fa08cd22f189737be0fa2ce114e8d47d0b53562ef4e78f

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C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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