fcdee2cf79eaf19e606c077ea5f5b3244976f8d595a5650da18448fa05a78e02

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/04/2024, 04:20

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General

Target

2024-04-25_86a2089f6fe1947051453c55fdc3e99c_bkransomware.exe
Size

71KB
MD5

86a2089f6fe1947051453c55fdc3e99c
SHA1

129ffd88c09da22faf46e572936e402f9c7ee22c
SHA256

fcdee2cf79eaf19e606c077ea5f5b3244976f8d595a5650da18448fa05a78e02
SHA512

9fefdea9157186d25315ea0a2f22c7ef691bddf3a04b6e71102c07175e82f4d0436c848e98d03eb77002a2c72d1a026306fbb62aaa80db60a23b3820f1b4a0cb
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTp:ZhpAyazIlyazTp

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1272	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_86a2089f6fe1947051453c55fdc3e99c_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_86a2089f6fe1947051453c55fdc3e99c_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2040	2024-04-25_86a2089f6fe1947051453c55fdc3e99c_bkransomware.exe
Token: SeDebugPrivilege	1272	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 1272	2040	2024-04-25_86a2089f6fe1947051453c55fdc3e99c_bkransomware.exe	28
PID 2040 wrote to memory of 1272	2040	2024-04-25_86a2089f6fe1947051453c55fdc3e99c_bkransomware.exe	28
PID 2040 wrote to memory of 1272	2040	2024-04-25_86a2089f6fe1947051453c55fdc3e99c_bkransomware.exe	28
PID 2040 wrote to memory of 1272	2040	2024-04-25_86a2089f6fe1947051453c55fdc3e99c_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-25_86a2089f6fe1947051453c55fdc3e99c_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_86a2089f6fe1947051453c55fdc3e99c_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2040
- 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:1272

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\06ib7AgGkmcjb7C.exe

Filesize
71KB

MD5
2825207d82127e51e54a20d7830c6eaa

SHA1
4c4dddf67fce2cf273eb2b27f0e84f8f093494c3

SHA256
ad04b3df2e988b353db3e059598a25806e03c414c6ff7a0b597c82e7ed6c69d6

SHA512
e87cbabaab1111199557118619e01a97310f217806c74556cb958efc4a8afba1dee951316285d13009282fd35d6646d8b6319d556fc1e07a990ff923379923ec

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