f3dd518a5b39a4eff2c8f1e1b87582c1352aa09ba50038673cb6503f09dde4bb

General

Target

2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe
Size

7.3MB
MD5

a2cb2666a65fc58db7fc32914fb9b69d
SHA1

ca021083c020ad92bc98fbb57ea4b7ae9f3f5585
SHA256

f3dd518a5b39a4eff2c8f1e1b87582c1352aa09ba50038673cb6503f09dde4bb
SHA512

a46236f6bf9cc4bbd3dbdc130e20935e534cb2fd540bff0b79008451d545944ddd7469ac466294439dabae8ae2ce9b370fa6478264f2252bd6992a7d53d3dee1
SSDEEP

196608:na6ktxC0ZWnd6WcF0DGi7m9orub/cXRbD466h2ZF:a6kt0d6WcCDGYmWruQJD564F

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
\Users\Admin\AppData\Local\Temp\PQqb4ePpIajzQ7m.exe	INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL
behavioral1/memory/2116-17-0x0000000000A40000-0x0000000001186000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL

Executes dropped EXE 2 IoCs

Processes:

PQqb4ePpIajzQ7m.exeCTS.exe

pid process

2116 PQqb4ePpIajzQ7m.exe
2372 CTS.exe
Loads dropped DLL 2 IoCs

Processes:

2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe

pid process

2436 2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe
2436 2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.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
2116	PQqb4ePpIajzQ7m.exe
2372	CTS.exe

pid	process
2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe
2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

CTS.exe2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

CTS.exe2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe

description ioc process

File created C:\Windows\CTS.exe CTS.exe
File created C:\Windows\CTS.exe 2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe

description	ioc	process
File created	C:\Windows\CTS.exe	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exeCTS.exePQqb4ePpIajzQ7m.exe

description	pid	process
Token: SeDebugPrivilege	2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe
Token: SeDebugPrivilege	2372	CTS.exe
Token: SeDebugPrivilege	2116	PQqb4ePpIajzQ7m.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe

description	pid	process	target process
PID 2436 wrote to memory of 2116	2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe	PQqb4ePpIajzQ7m.exe
PID 2436 wrote to memory of 2116	2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe	PQqb4ePpIajzQ7m.exe
PID 2436 wrote to memory of 2116	2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe	PQqb4ePpIajzQ7m.exe
PID 2436 wrote to memory of 2116	2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe	PQqb4ePpIajzQ7m.exe
PID 2436 wrote to memory of 2372	2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe	CTS.exe
PID 2436 wrote to memory of 2372	2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe	CTS.exe
PID 2436 wrote to memory of 2372	2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe	CTS.exe
PID 2436 wrote to memory of 2372	2436	2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_a2cb2666a65fc58db7fc32914fb9b69d_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:2436

C:\Users\Admin\AppData\Local\Temp\PQqb4ePpIajzQ7m.exe
C:\Users\Admin\AppData\Local\Temp\PQqb4ePpIajzQ7m.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2116

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:2372

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

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

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
7638e94f6542dd0e0540c3797bc5117c

SHA1
276f0af7e3e804a54525c345893230825ca78925

SHA256
b8d943f6f383e7107f3db4935c3f2a4e712a7ed7acad1ce6e6774ffe06a0660b

SHA512
9c449ffb57b1e8bc4e2fd82953f3bba23068695ab2d81f51479b612dad82662db7033399af7ef9dcbc4e6b931977addf7099794f7a2762bb1974197f361adcbe

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
\Users\Admin\AppData\Local\Temp\PQqb4ePpIajzQ7m.exe
Filesize
7.3MB

MD5
dd6b75a77601d62ac66df1b0a51a7de3

SHA1
699fc35deccb0cd6e341420903fc993535c2c98f

SHA256
2f46a1d48e1589e0aa10f215e77cb48fb90c531e19aa3c05d766f59b449f3c15

SHA512
43bd57e5379c22494aade734a45a443722327d48c7f06aa521048c99adba576e29bd70bba7bd28ba94f8f24f88efed7b8e5a1b3249cbfcb4d95fd0bc1f424d86

Download Submit
memory/2116-15-0x000007FEF5C23000-0x000007FEF5C24000-memory.dmp

Filesize
4KB

Download
memory/2116-17-0x0000000000A40000-0x0000000001186000-memory.dmp

Filesize
7.3MB

Download
memory/2116-18-0x000007FEF5C20000-0x000007FEF660C000-memory.dmp

Filesize
9.9MB

Download
memory/2116-26-0x000000001BE40000-0x000000001C122000-memory.dmp

Filesize
2.9MB

Download
memory/2116-152-0x000007FEF5C20000-0x000007FEF660C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads