a79ca0549f717d580d64a0912beaafde245d98b615d78b5f7958b373b728071c

General

Target

2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe
Size

96KB
MD5

7432e8f49b8287e8a1b216b948235d89
SHA1

136ca9891b4328d637cd38c8c3534859a83fce24
SHA256

a79ca0549f717d580d64a0912beaafde245d98b615d78b5f7958b373b728071c
SHA512

ca16f265044acf21fb0d625ff666f5e1dc29eaf680c6fc673ba8e7ff6f1d0e1232a1d1523c70ec695ec8ee990fabf976515b2a657fdd28e208d6536fd21e6888
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT1pJEKmdxu0OfeHcxQ2f:ZhpAyazIlyazT1op7WmHaQ2f

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2356	jfwe3lzAKkqmdWI.exe
2772	CTS.exe

Loads dropped DLL 3 IoCs

pid	Process
2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe
2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe
2736	Process not Found

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"	2024-07-07_7432e8f49b8287e8a1b216b948235d89_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	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe
Token: SeDebugPrivilege	2772	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2624 wrote to memory of 2356	2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe	30
PID 2624 wrote to memory of 2356	2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe	30
PID 2624 wrote to memory of 2356	2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe	30
PID 2624 wrote to memory of 2356	2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe	30
PID 2624 wrote to memory of 2772	2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe	32
PID 2624 wrote to memory of 2772	2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe	32
PID 2624 wrote to memory of 2772	2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe	32
PID 2624 wrote to memory of 2772	2624	2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe	32

C:\Users\Admin\AppData\Local\Temp\2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-07_7432e8f49b8287e8a1b216b948235d89_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Users\Admin\AppData\Local\Temp\jfwe3lzAKkqmdWI.exe
  C:\Users\Admin\AppData\Local\Temp\jfwe3lzAKkqmdWI.exe
  2⤵
  - Executes dropped EXE
  PID:2356
- 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:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\jfwe3lzAKkqmdWI.exe

Filesize
96KB

MD5
d113f2e7fd54a889036748046d3713a2

SHA1
ab6bb40685b4b4f24124aeac3806ef92a9f79e94

SHA256
ac67226ead1ee09ff69f5f294d00765220cb777c14814606398409537c5dcd9d

SHA512
ac414a2334f633671c91a51d5541610cb8a926321bf435ad8f3b411e46594cdb51458878551d79b3222ec310cf2118ab205bfd4440b32f1b50e1102d7942ecc5

Download Submit
C:\Users\Admin\AppData\Local\Temp\jfwe3lzAKkqmdWI.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/2356-15-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads