58493af8a68799d3702ffdaec7118b5593b31dd9d413788e779f5118c5550764

General

Target

2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe
Size

24.4MB
MD5

a267cb5adeee59a6dd547cf2ad5a0a49
SHA1

19508c3e91a778b0b7e558ce0c4140aa0835a054
SHA256

58493af8a68799d3702ffdaec7118b5593b31dd9d413788e779f5118c5550764
SHA512

5577f35bb46771608ec5c928a8337fcca2766983f580e28d3c43f2a1346e6da7ab3635b43f69d4ff90e50ffef23641ad179d1b3c9ea5a7ebb55820f549ad0127
SSDEEP

393216:fs/ZiWWmvBOK+FslYTTygwZ+Hi8wGqT3YQHwMlvfnjcIXX2Gl3f2Z4qlCuA9Ser:fs/8WJ/lgwZ+HLwC0tnnnnvfkwAer

Score

7^/10

discovery persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 3 IoCs

Processes:

fUq45BFz3XmZEuY.exeCTS.exefUq45BFz3XmZEuY.exe

pid process

2776 fUq45BFz3XmZEuY.exe
2948 CTS.exe
2228 fUq45BFz3XmZEuY.exe
Loads dropped DLL 3 IoCs

Processes:

2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exefUq45BFz3XmZEuY.exefUq45BFz3XmZEuY.exe

pid process

1620 2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe
2776 fUq45BFz3XmZEuY.exe
2228 fUq45BFz3XmZEuY.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

pid	process
2776	fUq45BFz3XmZEuY.exe
2948	CTS.exe
2228	fUq45BFz3XmZEuY.exe

pid	process
1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe
2776	fUq45BFz3XmZEuY.exe
2228	fUq45BFz3XmZEuY.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Drops file in Windows directory 2 IoCs

Processes:

2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1620 2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe
Token: SeDebugPrivilege 2948 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe
Token: SeDebugPrivilege	2948	CTS.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exefUq45BFz3XmZEuY.exe

description	pid	process	target process
PID 1620 wrote to memory of 2776	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	fUq45BFz3XmZEuY.exe
PID 1620 wrote to memory of 2776	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	fUq45BFz3XmZEuY.exe
PID 1620 wrote to memory of 2776	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	fUq45BFz3XmZEuY.exe
PID 1620 wrote to memory of 2776	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	fUq45BFz3XmZEuY.exe
PID 1620 wrote to memory of 2776	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	fUq45BFz3XmZEuY.exe
PID 1620 wrote to memory of 2776	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	fUq45BFz3XmZEuY.exe
PID 1620 wrote to memory of 2776	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	fUq45BFz3XmZEuY.exe
PID 1620 wrote to memory of 2948	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	CTS.exe
PID 1620 wrote to memory of 2948	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	CTS.exe
PID 1620 wrote to memory of 2948	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	CTS.exe
PID 1620 wrote to memory of 2948	1620	2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe	CTS.exe
PID 2776 wrote to memory of 2228	2776	fUq45BFz3XmZEuY.exe	fUq45BFz3XmZEuY.exe
PID 2776 wrote to memory of 2228	2776	fUq45BFz3XmZEuY.exe	fUq45BFz3XmZEuY.exe
PID 2776 wrote to memory of 2228	2776	fUq45BFz3XmZEuY.exe	fUq45BFz3XmZEuY.exe
PID 2776 wrote to memory of 2228	2776	fUq45BFz3XmZEuY.exe	fUq45BFz3XmZEuY.exe
PID 2776 wrote to memory of 2228	2776	fUq45BFz3XmZEuY.exe	fUq45BFz3XmZEuY.exe
PID 2776 wrote to memory of 2228	2776	fUq45BFz3XmZEuY.exe	fUq45BFz3XmZEuY.exe
PID 2776 wrote to memory of 2228	2776	fUq45BFz3XmZEuY.exe	fUq45BFz3XmZEuY.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_a267cb5adeee59a6dd547cf2ad5a0a49_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:1620

C:\Users\Admin\AppData\Local\Temp\fUq45BFz3XmZEuY.exe
C:\Users\Admin\AppData\Local\Temp\fUq45BFz3XmZEuY.exe
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2776

C:\Windows\Temp\{6655D9B2-B3CB-4280-A703-50BC9D8FAC5F}\.cr\fUq45BFz3XmZEuY.exe
"C:\Windows\Temp\{6655D9B2-B3CB-4280-A703-50BC9D8FAC5F}\.cr\fUq45BFz3XmZEuY.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\fUq45BFz3XmZEuY.exe" -burn.filehandle.attached=180 -burn.filehandle.self=188
3⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2228

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:2948

MITRE ATT&CK Matrix ATT&CK v13

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

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
C:\Windows\Temp\{3C6621A4-0E6E-4A95-BEE6-C0116131703C}\.ba\logo.png
Filesize
1KB

MD5
d6bd210f227442b3362493d046cea233

SHA1
ff286ac8370fc655aea0ef35e9cf0bfcb6d698de

SHA256
335a256d4779ec5dcf283d007fb56fd8211bbcaf47dcd70fe60ded6a112744ef

SHA512
464aaab9e08de610ad34b97d4076e92dc04c2cdc6669f60bfc50f0f9ce5d71c31b8943bd84cee1a04fb9ab5bbed3442bd41d9cb21a0dd170ea97c463e1ce2b5b

Download Submit
C:\Windows\Temp\{6655D9B2-B3CB-4280-A703-50BC9D8FAC5F}\.cr\fUq45BFz3XmZEuY.exe
Filesize
635KB

MD5
7cf46d8dfb686998aaaf81e27b995e8c

SHA1
c5638a049787ce441c9720c92d3cd02aa3b02429

SHA256
120019a0ac9f54224fc9787afba241bd9faaecef489be5a660bb16e85df052e4

SHA512
66cf76324e373d3be6cbef39535b419eda486a8f43c305c38a8c01cfc05f9e4073aeade808db8dea306fd3251955e177e45ab578a57114bac1d2df54b4e95efe

Download Submit
\Users\Admin\AppData\Local\Temp\fUq45BFz3XmZEuY.exe
Filesize
24.3MB

MD5
119dde89a20674349a51893114eae5ed

SHA1
4de9f6681f0f213b132def3af88a3c68483f5f32

SHA256
26c2c72fba6438f5e29af8ebc4826a1e424581b3c446f8c735361f1db7beff72

SHA512
9be541f26b5d43cee1766239d8880ab7d30d18fea2f17e28d63a498b30b7dd0918f389805398cb56b0df0df17c8633cb73f9e46672c93b21be04b85bda7a2648

Download Submit
\Windows\Temp\{3C6621A4-0E6E-4A95-BEE6-C0116131703C}\.ba\wixstdba.dll
Filesize
191KB

MD5
eab9caf4277829abdf6223ec1efa0edd

SHA1
74862ecf349a9bedd32699f2a7a4e00b4727543d

SHA256
a4efbdb2ce55788ffe92a244cb775efd475526ef5b61ad78de2bcdfaddac7041

SHA512
45b15ade68e0a90ea7300aeb6dca9bc9e347a63dba5ce72a635957564d1bdf0b1584a5e34191916498850fc7b3b7ecfbcbfcb246b39dbf59d47f66bc825c6fd2

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads