c8363ec2d88127aac4d5f1f261534e81cd278269bf5747594adf35f3720deb7a

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 23:24

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General

Target

2024-04-28_6b9df332a31aa3d19d68b8b970d8f93a_bkransomware.exe
Size

71KB
MD5

6b9df332a31aa3d19d68b8b970d8f93a
SHA1

f68c7cf00030415ee1294e32933daa377c132ac6
SHA256

c8363ec2d88127aac4d5f1f261534e81cd278269bf5747594adf35f3720deb7a
SHA512

3f25121b97f50f87506fda684ea673ad74146150519a7d24ebade3d0680e3a20582b217e973584f6f93374b9887c6553217f7fb2ddb615e5d2de7becb2a5aeb4
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTEi:ZhpAyazIlyazTL

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3652	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"	2024-04-28_6b9df332a31aa3d19d68b8b970d8f93a_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	2024-04-28_6b9df332a31aa3d19d68b8b970d8f93a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	800	2024-04-28_6b9df332a31aa3d19d68b8b970d8f93a_bkransomware.exe
Token: SeDebugPrivilege	3652	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 800 wrote to memory of 3652	800	2024-04-28_6b9df332a31aa3d19d68b8b970d8f93a_bkransomware.exe	81
PID 800 wrote to memory of 3652	800	2024-04-28_6b9df332a31aa3d19d68b8b970d8f93a_bkransomware.exe	81
PID 800 wrote to memory of 3652	800	2024-04-28_6b9df332a31aa3d19d68b8b970d8f93a_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-04-28_6b9df332a31aa3d19d68b8b970d8f93a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_6b9df332a31aa3d19d68b8b970d8f93a_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:800
- 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:3652

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
1caed68945fcf169f89d00de5074661d

SHA1
d2b2b80113918a26910af8e4edada2537c25842b

SHA256
39c2619bfa47608c40f15be4ac968c86cb8b452167568a81c05fc7ba3b07e402

SHA512
ed32e4b64731551e385dec498858f163b2d881cde796917d6e313e55c342a6c7b3ca3176734ea88be0dfb695449c3aa32403fafe8436822f6dc39e12960d36ff

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C:\Users\Admin\AppData\Local\Temp\JbIUs1A0pshcrQq.exe

Filesize
71KB

MD5
c374a1ec0dff686c8748f58beb398c82

SHA1
e7ed8adebfd57de103fe14c5d8aeb55d64429074

SHA256
c478cc6a72018de7d0363d4a6e72d70c990a742d0e2748a79b575c26be4b63a4

SHA512
7d18a4febb1b0e9398c798b916f1eacd6caf2410c2e6e31ca77dcdb448891124d7ea20ab23eb8093989e3a513e64205da5c010b0fe21f7391de52affcaae08e2

Download Submit
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