6061cd7e954e258ac581d6fd844e8e0946fc295d62edc36c30de653626a18cbc

Analysis

max time kernel
124s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
07-07-2024 22:35

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General

Target

2024-07-07_ae934eb0e644a1adeaab608ed5b556d4_bkransomware.exe
Size

96KB
MD5

ae934eb0e644a1adeaab608ed5b556d4
SHA1

5064440e017f04107303e4e4ca2b867dbc6954f1
SHA256

6061cd7e954e258ac581d6fd844e8e0946fc295d62edc36c30de653626a18cbc
SHA512

60cc73736a38f1bf4f1e0a93b18eec15ec2aafab5f249a4629e3f720f3b700af5a185edc401704608f7ca3d5ae00cc06b4c1905868146c405b2598283de5e642
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTkfRvvdiSzbxdYqhm:ZhpAyazIlyazTkVvdiIdYqM

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4632	NhlD8YfgsF1NbU1.exe
832	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

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_ae934eb0e644a1adeaab608ed5b556d4_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_ae934eb0e644a1adeaab608ed5b556d4_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	396	2024-07-07_ae934eb0e644a1adeaab608ed5b556d4_bkransomware.exe
Token: SeDebugPrivilege	832	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 4632	396	2024-07-07_ae934eb0e644a1adeaab608ed5b556d4_bkransomware.exe	92
PID 396 wrote to memory of 4632	396	2024-07-07_ae934eb0e644a1adeaab608ed5b556d4_bkransomware.exe	92
PID 396 wrote to memory of 832	396	2024-07-07_ae934eb0e644a1adeaab608ed5b556d4_bkransomware.exe	94
PID 396 wrote to memory of 832	396	2024-07-07_ae934eb0e644a1adeaab608ed5b556d4_bkransomware.exe	94
PID 396 wrote to memory of 832	396	2024-07-07_ae934eb0e644a1adeaab608ed5b556d4_bkransomware.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-07-07_ae934eb0e644a1adeaab608ed5b556d4_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-07_ae934eb0e644a1adeaab608ed5b556d4_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:396
- C:\Users\Admin\AppData\Local\Temp\NhlD8YfgsF1NbU1.exe
  C:\Users\Admin\AppData\Local\Temp\NhlD8YfgsF1NbU1.exe
  2⤵
  - Executes dropped EXE
  PID:4632
- 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:832

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 --field-trial-handle=4588,i,12101950716832706950,8384629015980369538,262144 --variations-seed-version --mojo-platform-channel-handle=4508 /prefetch:8
1⤵
PID:3624

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

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Downloads

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

Filesize
392KB

MD5
918927a03d06b452952e811c64a151e2

SHA1
80a1ccab9798691830647b711a20a9d40374cfab

SHA256
adf1c40f00e1a652d38cd6b5af8e875f3812ea417e1a72ff68965cee4a91043b

SHA512
ed15b897eca563a7fa41cf1881f94dd6c83f61d9d640048cb58cba910086f3d7f54b86cce9c7f31644e595ea73343560140319ea6a276af75846009c4bc5c7cb

Download Submit
C:\Users\Admin\AppData\Local\Temp\NhlD8YfgsF1NbU1.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/4632-8-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads