fa51489cb05a2fbf4103bd7adc5258b938a8d794de83304f4ce7d535d390c62e

General

Target

2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe
Size

96KB
MD5

8fca05d34ba584a5e94d406114a6cfd2
SHA1

688335acd17293e62e165711ad8e92f01df034cf
SHA256

fa51489cb05a2fbf4103bd7adc5258b938a8d794de83304f4ce7d535d390c62e
SHA512

35d1ede22f08c2a995b64040523a7dc2754bbd0ef6bf022e0e501771f192643f4bcff7e6e8419e008ff3a8eab7cc7d0e5f6590d454e6e137cc0769d93e381b25
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT3DTXAnAfrcM4VrPg:ZRpAyazIliazTonAfco

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

QjWnbbLSvvrJv0N.exeCTS.exe

pid process

2448 QjWnbbLSvvrJv0N.exe
4476 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
2448	QjWnbbLSvvrJv0N.exe
4476	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_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:

2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2916 2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe
Token: SeDebugPrivilege 4476 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2916	2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe
Token: SeDebugPrivilege	4476	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe

description	pid	process	target process
PID 2916 wrote to memory of 2448	2916	2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe	QjWnbbLSvvrJv0N.exe
PID 2916 wrote to memory of 2448	2916	2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe	QjWnbbLSvvrJv0N.exe
PID 2916 wrote to memory of 4476	2916	2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe	CTS.exe
PID 2916 wrote to memory of 4476	2916	2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe	CTS.exe
PID 2916 wrote to memory of 4476	2916	2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_8fca05d34ba584a5e94d406114a6cfd2_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2916

C:\Users\Admin\AppData\Local\Temp\QjWnbbLSvvrJv0N.exe
C:\Users\Admin\AppData\Local\Temp\QjWnbbLSvvrJv0N.exe
2⤵
- Executes dropped EXE
PID:2448

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:4476

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1328 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
1⤵
PID:4588

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\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
789KB

MD5
3e75b341c13053a9071050c298ff1098

SHA1
6583435aa67c535d08fa1b5b2f9f0c51d436d7e0

SHA256
934c8522dd594d27751382160da65fb4e5d209059be2ff2e3fcd960bce9e3b27

SHA512
0b424bba4bbdfc9a11ad816ba5bf4a905a8f7eb4f053b32260118c0764fda873eb8918fdcfffe9bbb97a0a854477ec2a33a6c7b8161f3c76579a64c82f8b29d1

Download Submit
C:\Users\Admin\AppData\Local\Temp\QjWnbbLSvvrJv0N.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/2448-9-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads