9cc68cdaf4c118d16dd6cbf69b7bc2a8ad0096d9771291793dc8334d1e823119

Analysis

max time kernel
67s
max time network
54s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 18:05

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General

Target

2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe
Size

7.3MB
MD5

9df4d4b113ddf408230f64ba34356bd8
SHA1

4a09c79e88d12b398f450274a4344e1198b1eb80
SHA256

9cc68cdaf4c118d16dd6cbf69b7bc2a8ad0096d9771291793dc8334d1e823119
SHA512

dd8b403976534e4bd6534289c85b737ede27bc257358f0b90cfc56b1f1fdee55e720f1b008aefdcdce1c3fabc5de3d8b9b6c311474e1d7f74daf04e3cdc8b0b4
SSDEEP

196608:RPlWiPvnO+fM/DnHtxuu/iO5MH0EtUD8quaXer7rhCqAU:RPlWiPvO+fEDHtxuIi0A1aXe7QU

Score

9^/10

persistence spyware stealer

Malware Config

Signatures

Detects executables containing URLs to raw contents of a Github gist 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\MkZOoX1rSqxu2od.exe	INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL
behavioral2/memory/4472-17-0x0000000000DA0000-0x00000000014E6000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL

Executes dropped EXE 2 IoCs

Processes:

MkZOoX1rSqxu2od.exeCTS.exe

pid process

4472 MkZOoX1rSqxu2od.exe
2388 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

pid	process
4472	MkZOoX1rSqxu2od.exe
2388	CTS.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_9df4d4b113ddf408230f64ba34356bd8_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_9df4d4b113ddf408230f64ba34356bd8_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

Processes:

2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exeCTS.exeMkZOoX1rSqxu2od.exe

description	pid	process
Token: SeDebugPrivilege	3940	2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe
Token: SeDebugPrivilege	2388	CTS.exe
Token: SeDebugPrivilege	4472	MkZOoX1rSqxu2od.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe

description	pid	process	target process
PID 3940 wrote to memory of 4472	3940	2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe	MkZOoX1rSqxu2od.exe
PID 3940 wrote to memory of 4472	3940	2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe	MkZOoX1rSqxu2od.exe
PID 3940 wrote to memory of 2388	3940	2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe	CTS.exe
PID 3940 wrote to memory of 2388	3940	2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe	CTS.exe
PID 3940 wrote to memory of 2388	3940	2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_9df4d4b113ddf408230f64ba34356bd8_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3940

C:\Users\Admin\AppData\Local\Temp\MkZOoX1rSqxu2od.exe
C:\Users\Admin\AppData\Local\Temp\MkZOoX1rSqxu2od.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4472

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:2388

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
392KB

MD5
a87e842b2516d426bae73b6e6f4a0303

SHA1
d9c37a5432bb0ddabc4bec781e106f6f7cdcfaa3

SHA256
9c1c69aa485e58d5c374dccae95a55119fc981bf51b5b9437b1038a922ef7d95

SHA512
0cab34231777d0d5b319ec6d4fbbcc4e4bff51f9bf51d4bc3b31041e338b816e397b4cf39a98d127e5734ce5f7c0bc8be78a03c1625118289ad93563be19c84c

Download Submit
C:\Users\Admin\AppData\Local\Temp\MkZOoX1rSqxu2od.exe
Filesize
7.3MB

MD5
dd6b75a77601d62ac66df1b0a51a7de3

SHA1
699fc35deccb0cd6e341420903fc993535c2c98f

SHA256
2f46a1d48e1589e0aa10f215e77cb48fb90c531e19aa3c05d766f59b449f3c15

SHA512
43bd57e5379c22494aade734a45a443722327d48c7f06aa521048c99adba576e29bd70bba7bd28ba94f8f24f88efed7b8e5a1b3249cbfcb4d95fd0bc1f424d86

Download Submit
C:\Users\Admin\AppData\Local\Temp\config\chocolatey.config.4472.update
Filesize
9KB

MD5
14ffcf07375b3952bd3f2fe52bb63c14

SHA1
ab2eadde4c614eb8f1f2cae09d989c5746796166

SHA256
6ccfdb5979e715d12e597b47e1d56db94cf6d3a105b94c6e5f4dd8bab28ef5ed

SHA512
14a32151f7f7c45971b4c1adfb61f6af5136b1db93b50d00c6e1e3171e25b19749817b4e916d023ee1822caee64961911103087ca516cf6a0eafce1d17641fc4

Download Submit
C:\Users\Admin\AppData\Local\Temp\config\chocolatey.config.backup
Filesize
809B

MD5
8b6737800745d3b99886d013b3392ac3

SHA1
bb94da3f294922d9e8d31879f2d145586a182e19

SHA256
86f10504ca147d13a157944f926141fe164a89fa8a71847458bda7102abb6594

SHA512
654dda9b645b4900ac6e5bb226494921194dab7de71d75806f645d9b94ed820055914073ef9a5407e468089c0b2ee4d021f03c2ea61e73889b553895e79713df

Download Submit
C:\Users\Admin\AppData\Local\Temp\logs\chocolatey.log
Filesize
4KB

MD5
a8d401cc9f03b54a20223aa752f022bc

SHA1
4dcf5981b1eb8d67b8b673eb988bbb235482311a

SHA256
e832dd19d8d5786dfa4e84fb64fe43db2c9c0ec1d236df6a8ecace999ca27378

SHA512
f70f29c32856363cf5a3932b274870f2144dd02696525bf1794f7cf674db40f65bcdf374500a7e8394054fc5a2ddce1d6c74691acf43051596c3da02bd45a763

Download Submit
C:\Users\Admin\AppData\Local\Temp\logs\chocolatey.log
Filesize
805B

MD5
bd12592ff5e1c49923157fd807f6a05f

SHA1
3aa0cf28ec889bb87615db6a0bf8cdc2cdef0490

SHA256
6390bbe8914980f86f8627bbef09a057473eef92d5e54c2fbfe0c0254d9a1cf1

SHA512
2d684b691f851b5bcc7a167f2eaad92d4b2ab8577809484d4416b8f681ee68eee024e6bc2b775d90d581e25e35bc976bf95cf00ca803ac8b90de9f1e6884c065

Download Submit
C:\Users\Admin\AppData\Local\Temp\logs\chocolatey.log
Filesize
2KB

MD5
8a9c130c263759de5c833cb5df02b7b2

SHA1
1cbcbc30117dcafbc5131b4b088bc6fcc820fc14

SHA256
fbb8ec320b08a2c2ef20e1c0416c18ee0aca425a3b306f74073c3dc9e9dd439c

SHA512
7ea598684a2a694551e09ec256da360833eeadf18814b56d5a55d2ca220b9688c1c62ce873e51d65961f54e5eabfcacb2d7f11c9f2fe48f95a640cca28db5467

Download Submit
C:\Users\Admin\AppData\Local\Temp\redirects\cpush.exe.ignore
Filesize
2B

MD5
81051bcc2cf1bedf378224b0a93e2877

SHA1
ba8ab5a0280b953aa97435ff8946cbcbb2755a27

SHA256
7eb70257593da06f682a3ddda54a9d260d4fc514f645237f5ca74b08f8da61a6

SHA512
1b302a2f1e624a5fb5ad94ddc4e5f8bfd74d26fa37512d0e5face303d8c40eee0d0ffa3649f5da43f439914d128166cb6c4774a7caa3b174d7535451eb697b5d

Download Submit
C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/4472-34-0x00000000035C0000-0x00000000035E0000-memory.dmp

Filesize
128KB

Download
memory/4472-25-0x00007FFFFBC00000-0x00007FFFFC6C1000-memory.dmp

Filesize
10.8MB

Download
memory/4472-61-0x000000001C1B0000-0x000000001C200000-memory.dmp

Filesize
320KB

Download
memory/4472-62-0x000000001C280000-0x000000001C2F6000-memory.dmp

Filesize
472KB

Download
memory/4472-63-0x000000001C160000-0x000000001C17E000-memory.dmp

Filesize
120KB

Download
memory/4472-26-0x000000001C050000-0x000000001C060000-memory.dmp

Filesize
64KB

Download
memory/4472-17-0x0000000000DA0000-0x00000000014E6000-memory.dmp

Filesize
7.3MB

Download
memory/4472-169-0x00007FFFFBC00000-0x00007FFFFC6C1000-memory.dmp

Filesize
10.8MB

Download