be6ff88b166ad01b22f39f36a65b40314bc64c8389e01d60cb196f5618398ebb

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 03:55

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General

Target

2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
Size

71KB
MD5

d69d82d641b9fb248b9dd467b36810b1
SHA1

120e4fb566137de4b0354f0cef7ad100218506f2
SHA256

be6ff88b166ad01b22f39f36a65b40314bc64c8389e01d60cb196f5618398ebb
SHA512

74be47b6de5e08ebebcb58751d349e939a66424d3a9ba9057492f45a76d93a693a20953d84fee42b7949c5d61715bcc2f9674889d34d9feef789f6502251f80f
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTA:ZhpAyazIlyazTA

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2796 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
2796	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_d69d82d641b9fb248b9dd467b36810b1_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_d69d82d641b9fb248b9dd467b36810b1_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_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2132 2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
Token: SeDebugPrivilege 2796 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2132	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
Token: SeDebugPrivilege	2796	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe

description	pid	process	target process
PID 2132 wrote to memory of 2796	2132	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe	CTS.exe
PID 2132 wrote to memory of 2796	2132	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe	CTS.exe
PID 2132 wrote to memory of 2796	2132	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe	CTS.exe
PID 2132 wrote to memory of 2796	2132	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2132

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:2796

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\WVA0SHakKVBp0IG.exe
Filesize
71KB

MD5
9f146db79908ce514538a02241f22c53

SHA1
8f8923ff52dd950124df1d774354ec84f8711c86

SHA256
39e0994dde584edb97fc2c1812974df5a415ec8d51e19afd22c73eb5283b2199

SHA512
91d0049e055c1212b01105eb1252138569b4d7c2297ad62fbdf62bf54e790452a6ef7860768d54782ab1cb3a3136d636f20d9da5ab3c659daaa7b4f2ffc7614f

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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