c12d1922c105cda03a6c3bfa703244dee95b59cf84078a634f4c321abcb21c53

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 19:24

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General

Target

2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe
Size

71KB
MD5

1d58a33157321d1623c13c062eaa75c7
SHA1

817f3fece336c1f26014cd69ee62ef516fecd37a
SHA256

c12d1922c105cda03a6c3bfa703244dee95b59cf84078a634f4c321abcb21c53
SHA512

d444e8d4765be23d5306b82d8c25841a2b5cb35aa561d94136c3a858719dca3ddf02eb3789b08453958f046b3c51eb794389ed512d37685832930647ecfbe2bc
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTYw:ZhpAyazIlyazTYw

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

844 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
844	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-21_1d58a33157321d1623c13c062eaa75c7_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:

2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2236 2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe
Token: SeDebugPrivilege 844 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2236	2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe
Token: SeDebugPrivilege	844	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe

description	pid	process	target process
PID 2236 wrote to memory of 844	2236	2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe	CTS.exe
PID 2236 wrote to memory of 844	2236	2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe	CTS.exe
PID 2236 wrote to memory of 844	2236	2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe	CTS.exe
PID 2236 wrote to memory of 844	2236	2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_1d58a33157321d1623c13c062eaa75c7_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236

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:844

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\V5qlWlAZzFCGI3b.exe

Filesize
71KB

MD5
5dc0c05517f4ad9fe1ac3fa3903b7964

SHA1
2939b1b858d786430ff884b8698dced9dd148a10

SHA256
52ee0e75c8a2e0ae850f90bd506acefdf0105a0f2f61a5eb26047eaba84002ca

SHA512
fb44de92e2cb789b414ee4e0fc3b1e773fde2096bce80fabf39a9f24d989e7109ce2b7a58a6199ca704229a40d9b54a1e2473509701a023615232e70daa0ce26

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit