2f8c12023bea2e6a6c768b91730b74992d7ee91c97be754e4e8e5b46d665e672

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 03:27

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General

Target
2024-06-13_1bedb14e3cc2e851cfeaec1f90d4d6f1_bkransomware.exe
Size 71KB
Sample240613-dztxrssfna
SHA256 2f8c12023bea2e6a6c768b91730b74992d7ee91c97be754e4e8e5b46d665e672
MD5 1bedb14e3cc2e851cfeaec1f90d4d6f1
SHA1 5f3b7e0988ae6ba5e68b8f6024e1d5118d3e71df
SHA512 80a5ed74f898fba45428fa37bf76c1b3f06b5a27a593e95fef8cc11371dc5df8d013a8f5feb599c5d14b73bb272180843d7b0596e01c6a43817959d0a79642fb
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT1:ZhpAyazIlyazT1
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
388	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"	2024-06-13_1bedb14e3cc2e851cfeaec1f90d4d6f1_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	2024-06-13_1bedb14e3cc2e851cfeaec1f90d4d6f1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1592	2024-06-13_1bedb14e3cc2e851cfeaec1f90d4d6f1_bkransomware.exe
Token: SeDebugPrivilege	388	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1592 wrote to memory of 388	1592	2024-06-13_1bedb14e3cc2e851cfeaec1f90d4d6f1_bkransomware.exe	82
PID 1592 wrote to memory of 388	1592	2024-06-13_1bedb14e3cc2e851cfeaec1f90d4d6f1_bkransomware.exe	82
PID 1592 wrote to memory of 388	1592	2024-06-13_1bedb14e3cc2e851cfeaec1f90d4d6f1_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-13_1bedb14e3cc2e851cfeaec1f90d4d6f1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_1bedb14e3cc2e851cfeaec1f90d4d6f1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1592
- 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:388

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

excel.exe_Rules.xml

Path C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Size 395KB
SHA256 821ba1d17499e507f0a2c8cdcc72aca20bdd186568d526811acb476ede88d923
MD5 fe44bb08fb71b463997074de93db263f
SHA1 307a6860805acf5553eebb4f888474dfbb81c342
SHA512 daac28adc62dc61fc5b334c4398525f72f21c3d570b830a86a0235810f0ff86c48313706f7f35327ba612992e96c8f89334bb3e27cf9a1c3e63195fa55eac9e1
SSDEEP 6144:hZMazcT1PMQXzWJLfw2Q0MZ6H68xSZ0Gg+ezhqTJAImeRTZ5lSMdcWqboEXz4yvr:hS0cxHsJeZL7gYTJZZ5lpsTz4Ir
MD5 SHA1 SHA512 SSDEEP

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l9t52iSQB28KNRq.exe

Path C:\Users\Admin\AppData\Local\Temp\l9t52iSQB28KNRq.exe
Size 71KB
SHA256 8f030c44a3a47297a491762bb9328a65cf3679aa3b50aa1d1d6b5f9fa7185256
MD5 662787070cdda924485bbe50d155c729
SHA1 6816445bdd061dbc1f0483c7c566a2018f90c2f7
SHA512 c613a2815dcd7d6ab71064dab681e1057c2763a3b78e9ac5ce504a3e7f344b67c8519606b50ebd3a7064e5e3f15b6ff8386220b01db9f0ddc86b7aed6925c7e9
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT4:ZhpAyazIlyazT4
MD5 SHA1 SHA512 SSDEEP

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CTS.exe

Path C:\Windows\CTS.exe
Size 71KB
SHA256 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
MD5 66df4ffab62e674af2e75b163563fc0b
SHA1 dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA512 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT:ZhpAyazIlyazT
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads