32028811d0dba4b982e759538a45bb90febf94fb7e39fbb83a050d0d68b8111c

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
09/07/2024, 16:00

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General

Target
2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe
Size 165KB
Sample240709-tf15qstarg
SHA256 32028811d0dba4b982e759538a45bb90febf94fb7e39fbb83a050d0d68b8111c
MD5 2e01dd7bc9084e64e28373d5fd66bcf1
SHA1 2cab1d07d1e40abc329754b82491b53057a87a08
SHA512 9c8596759a62e6414d99a74c8ebef056865cc38abf1ae1c31eca5a87cecca9158a8f505f966baef4d7a8c68b5b6c9aaba259545db294f516668d6b385ded44d9
SSDEEP 3072:ZhpAyazIlyazT/Wses2a4OO2l1YwOrAkDzuxPNJZJx:hZMazTWsQO1OHSP/9
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3632	pR5No4ywAPxBsdm.exe
2260	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"	2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_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	2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3040	2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe
Token: SeDebugPrivilege	2260	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 3632	3040	2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe	82
PID 3040 wrote to memory of 3632	3040	2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe	82
PID 3040 wrote to memory of 3632	3040	2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe	82
PID 3040 wrote to memory of 2260	3040	2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe	83
PID 3040 wrote to memory of 2260	3040	2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe	83
PID 3040 wrote to memory of 2260	3040	2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-09_2e01dd7bc9084e64e28373d5fd66bcf1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Local\Temp\pR5No4ywAPxBsdm.exe
  C:\Users\Admin\AppData\Local\Temp\pR5No4ywAPxBsdm.exe
  2⤵
  - Executes dropped EXE
  PID:3632
- 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:2260

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 392KB
SHA256 98eb2a01e1eae71879de104fe1837301dccaa47a2ec281975d186d4dc65b0197
MD5 0e6ddcb597b7d0c600a52f57aae8e5f8
SHA1 032972f11bc87f0e412fd672446e6a55d358946d
SHA512 59770cc49bba001cdb2919b5163d2aa00c135b524b06e607a7a99ecc38a60c5ea16890de0940145346f3d8ebf0aaa03ccf0357364eeaa3803635dccc0c0e1a84
SSDEEP 12288:hS0QGQ5gyniTtbvG6GfBRAKWg2KPmHT8lyqo0ERY:DQuyniTtb+6GfvAyjeHTyo0UY
MD5 SHA1 SHA512 SSDEEP

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pR5No4ywAPxBsdm.exe

Path C:\Users\Admin\AppData\Local\Temp\pR5No4ywAPxBsdm.exe
Size 94KB
SHA256 352df104254095ddf925514d99bfb5411c95b5386e90caf06557979f82e16844
MD5 ec5e7403f86990ab23caeeb4955f5ffb
SHA1 c345479d6dc53a102ccb05259c0c858a1ddd7d8e
SHA512 679957452967a3d3f3f1c55a9a510befa2d31e3bdb825a76540e845667f61775f4d18c3b3493133dd671b380907aaae0dd380b95729a448acf48d95ca0fe5206
SSDEEP 1536:WRCgEoP+G7f5G+OISw7ehlGHf5KOdT+m3jM97/TuF0SqfuYFfHYToxs:WRCg9nxGjBlGrdTd3wL2qfuCfHYToq
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